Performance Tuning - Bressner Technology

PERFORMANCE 

TUNING 

COMPONENTS 

High Performance Tuning Components 

for Fast Road and Track Applications 

2011

A History Of Excellence 

Cosworth has a legendary reputation for high performance racing engines and vehicle 

electronics systems in Formula One, the IndyCar Series, NASCAR, WRC and many more. 

In 40 years of F1 competition, Cosworth engines delivered 176 F1 wins, 13 Constructors’ 

Championships and 10 Drivers’ Championships. Cosworth’s results in American openwheel 

racing, United States Auto Club (USAC), Championship Auto Racing Teams (CART) 

and the Indy Racing League (IRL), are equally impressive. 

Cosworth has now diversified to be one of the premier suppliers of high quality tuning 

components to the performance aftermarket. 

Our tuning portfolio of products and capabilities now extends throughout the vehicle, from 

the engine, to cooling, induction and fuel, thermal insulation, braking and filtration - with 

new, innovative products and extensions to ranges being added continually. 

Every one of our products is engineered to Cosworth’s exacting standards and all are 

designed to maximise the performance of the vehicle without compromising reliability, 

consistency and crucially the driving experience. 

Cosworth Aftermarket now design, manufacture and market an extensive range of tuning 

technologies for the enthusiast and motorsport professional alike including Japanese sport 

compact vehicles and luxury brand 4x4 vehicles. 

Our involvement in motorsport and road car tuning, latterly with the Cosworth Impreza 

STi CS400 has allowed our customers to share our experiences through our performance 

tuning products. 

New products and ranges are being added continuously. 

Please refer to www.cosworth.com Performance Tuning Components.

Contents 

Big Valve Cylinder Heads 4 

High Performance Short Block Assemblies 6 

High Performance Long Block Assemblies 8 

Forged Pistons 10 

Performance Ring Sets 12 

Spare Piston Pins and Circlips 13 

Billet Crankshafts 14 

Stroker Engine Kits 15 

Forged Connecting Rods 16 

High Performance Cylinder Head Stud Kits 17 

High Performance Camshafts 18 

Ultra High Performance Engine Bearings 20 

Kevlar High Performance Timing Belts 22 

Intercooler Systems 23 

High Flow Intake Systems 26 

Induction 27 

High Flow Synthetic Air Filters 30 

Brake Pads 32 

Big Brake Upgrade Kits 35 

Fuel 36 

Oil Control 37 

High Performance Valve Train 40 

High Performance Head Gaskets 42 

Thermal Composite Gaskets 44 

Cosworth Rhino Skin - Thermal Heat Protection 45 

Miscellaneous 46 

Disclaimer 47 

3

Big Valve Cylinder Heads 

For over 40 years, Cosworth has been 

the leader in innovative multi-valve 

cylinder head design for both racing 

and high performance production 

cars. The Cosworth CNC Ported Big 

Valve Cylinder head range is the latest 

advancement. Modified from new OE 

cylinder head castings, substantial gas flow 

improvements and upgraded valve train 

components offer superior performance for 

your high performance engine. 

Each original cylinder head design is 

carefully evaluated and tested to establish 

the improvements required to meet 

the target performance level. Hours of 

testing and flow bench validation are 

used to determine the best advanced 

port design yielding maximum usable 

power and response. However, there 

is more to cylinder head design than 

just maximum flow. It is critical that port 

velocity is maintained to ensure drivability 

and valve train components are matched 

to guarantee reliable performance. Once 

all of these factors have been tested 

and validated, the final port contour is 

digitized. Using the digitized program, we 

then reshape both intake and exhaust 

ports using a 5 axis CNC mill producing 

an accurate and consistent port shape 

every time. In addition to re-shaping and 

enlarging the intake and exhaust ports, 

most Big Valve Cylinder heads feature 

4 

CNC Ported Big Valve Cylinder Heads 

Part No. Description 

KK3670 Subaru WRX STI EJ25 (2 5L) Pr 2004-2006 

Subaru 

20001699 Subaru WRX STI EJ25 (2 5L) Pr 2007 (with air injection ports) 

20004544 Subaru WRX STI EJ25 (2 5L) Pr 2008-2009 (with dual AVCS) 

NiSSaN 

KK3918 Nissan VQ35 (3 5L) Pr 2002-2006 (includes rev up version) 

KK3672 Mitsubishi Evo V-VIII -2005 4G63 2 0 Litre 

KK3852 Mitsubishi Evo IX 4G63 (2 0L) -2006 MIVEC 

20005685 Mitsubishi Evo X 2008 - 4B11T (2 0L) MIVEC 

20000691 Ford Duratec, 2 0L/2 3L 

MitSubiShi 

OtherS 

CNC Ported Big Valve Cylinder Heads with Camshafts 


Subaru 

SB8010 Subaru WRX STI EJ25 (2 5L) Pr 2004-2006 w KK3766 Camshafts (USA & MY06 Japan/Euro) Electronic Throttle 

SB8012 Subaru WRX STI EJ25 (2 5L) Pr 2004-2006 w KK3920 Camshafts (Japan/Euro) Cable Throttle 

20002024 Subaru WRX STI EJ25 (2 5L) Pr 2007 w KK3766 Camshafts (USA/Japan/Euro) 

20002026 Subaru WRX STI EJ25 (2 5L) Pr 2007 w KK3920 Camshafts (Special Applications Only) 

20010140 Subaru WRX STI EJ25 (2 5L) Pr 2008 w Dual AVCS Camshafts 

a re-shaped combustion chamber to 

un-shroud the valves increasing air flow 

and performance. After machining, each 

cylinder head receives a multi-angle high 

performance valve job on our precision 

Newen® CNC valve seat cutter. Then 

Subaru EJ25 

each cylinder head is ultrasonically 

cleaned, serialized and finally hand 

assembled with select high performance 

valve train components, ready to install on 

your engine. 

Nissan VQ35DE

Key Features: 

■ All new OE Castings 

■ Enlarged intake and exhaust ports 

■ Large diameter stainless steel intake 

valves 

■ Large diameter inconel exhaust valves 

■ Hi-rev, dual valve springs 

■ Titanium retainers 

■ Hardened steel spring platforms 

■ Reshaped combustion chamber on 

most applications 

■ Flow bench proven design 

■ Dynamometer tested 

■ Machined Cosworth logo 

■ Precision multi-angle valve job 

■ Pre-assembled, ready to install 

■ Machined port bore finish 

■ Knife edge port divider 

Cylinder head development 

Mitsubishi 4B11 

Precision Newen® CNC 

Valve Seat Machining 

5

High Performance Short Block Assemblies 

Cosworth high performance engine 

assemblies are the perfect basis for 

your high performance application. Each 

version has gone through countless 

hours of engineering and evaluation to 

determine the best combination of parts 

and build specification, ensuring maximum 

reliable performance. Each Cosworth 

high performance engine assembly starts 

with all new select components as the 

foundation of the performance build. Every 

block is thoroughly inspected before the 

cylinders are honed to perfection. We then 

balance the rotating assembly that includes 

either a new factory forged crankshaft or 

Cosworth billet crank along with Cosworth 

forged connecting rods, Cosworth tri-metal 

bearings and Cosworth forged pistons. 

The motorsport grade parts are then 

professionally assembled by expert engine 

builders in the Cosworth engine assembly 

facility. Each high performance engine 

assembly includes a complete specification 

sheet listing all critical dimensions along 

with a serialized plaque. For maximum 

performance, combine with a Cosworth 

CNC ported Big Valve Cylinder Head and 

camshaft set. 

6 

High Performance Short Blocks 


Subaru 

SB8005 Subaru STI EJ25 Short Block (2 5L)-Forged Pistons, Rods 8:2:1 cr 

SB8007 Subaru STI EJ25 Short Block(2 5L)-Forged Pistons, Rods W 79mm Billet Crank 8:2:1 cr 

20003486 Subaru STI EJ25 Short Block(2 5L)-Forged Pistons, Rods W 81mm Billet Crank 8:2:1 cr 

20007702 Subaru STI EJ25 Short Block OE Crank 9 2:1 cr (High compression ratio) 

20007697 Subaru STI EJ25 Short Block 81mm Crank 9 2:1 cr (High compression ratio) 

20007703 Subaru STI EJ25 Short Block 79mm BLT Crank 9 2:1 cr (High compression ratio) 

20000067 Nissan VQ35 Short Block (3 5L) Lo comp 8 8:1 

CI8019 Nissan VQ35 Short Block (3 5L) Hi comp 11:1 

NiSSaN 

MitSubiShi 

CI8015 Mitsubishi Evo VIII/IX 4G63 Short Block (2 0L)-Forged Pistons, Rods 

CI8018 Mitsubishi Evo VII/IX 4G63 Short Block (2 2L)-Forged Pistons, Rods, Billet Crank 

20014144 Mitsubishi Evo X 4B11T Short Block (2 2L)-Forged Pistons, Rods, Billet Crank 

Subaru EJ25 High Performance Short Block 2.5/2.6L 

The Cosworth EJ25 is an excellent starting 

point for high performance and track day 

applications. 

■ New Subaru EJ25 STI EJ257 Block 

■ New Subaru EJ25 STI Forged 

Crankshaft or Cosworth Billet Crank (79 

or 81mm) 

■ Cosworth 79mm or 81mm Forged 

H-beam connecting rods 

■ Cosworth Forged Pistons (99.5mm) and 

rings 

■ Cosworth Tri-metal bearings 

■ Balanced to within 0.5 gram 

■ Complete blue-printed assembly 

■ Ring gap set 

■ Bearing clearance checked 

■ Deck height checked 

■ Connecting rod side clearance checked 

■ Crankshaft end float checked

Mitsubishi 4G63 (Evolution VII-IX) High Performance Short Block 2.0L 

The Cosworth 2.0L 4G63 is an excellent 

starting point for high performance and 

track day applications. 

Mitsubishi 4G63 (Evolution VII-IX) High Performance Short Block 2.2L 

The Cosworth 4G63 2.2L stroker engine 

combines the perfect bore to stroke ratio, 

yielding potentially big gains in torque 

while still allowing the engine to rotate and 

produce power at higher RPMs. 

The Cosworth VQ35DE high performance 

short block is the perfect foundation 

for your high performance application. 

Available in either high compression 11:1 

or low compression 8.8:1 for turbo or 

supercharged applications. 

■ New Mitsubishi 4G63 Evolution Block 

■ New Mitsubishi forged crankshaft 

(88mm) 

■ Cosworth Forged H-beam connecting 

rods 

■ Cosworth Forged Pistons (85mm) and 

rings 


■ Cosworth Heavy Duty main studs 

■ Piston squirt jets 






■ Connecting Rod side clearance checked 

■ Crankshaft end float checked 

■ New Mitsubishi 4G63 Evolution Block 

■ New Cosworth Billet Crank (94mm) 


rods 

■ Cosworth Forged Pistons (86mm) and 

rings 











Nissan VQ35DE (350Z-G35) High Performance Short Block 3.5L 

■ New Nissan forged crankshaft (81.4mm) 


rods 

■ Cosworth Forged Pistons (95.5mm) and 

rings 











7

High Performance Long Block Assemblies 

The Cosworth Subaru EJ25 CS600 series 

is designed for extreme track day use and 

the demanding performance enthusiast. 

Each assembly is precision built by one 

of Cosworth’s skilled craftsmen using 

the finest components from our parts 

catalogue to ensure maximum reliable 

power and performance. Starting with 

a new Subaru EJ257 semi closed deck 

block, we meticulously diamond hone 

each bore to guarantee perfect piston 

to cylinder wall clearance. The block is 

then assembled with our Forged Pistons, 

motorsport grade Forged H-Beam 

connecting rods along with our high 

performance rod and main bearings and a 

new STI forged crankshaft. For maximum 

performance, an optional steel billet crank 

is available (CS600X). Once the cylinder 

block assembly is completed, we install a 

pair of our CNC machine port-bored Big 

Valve Cylinder heads with our proven “S2” 

camshafts complete with valve lash set to 

our specifications. The cylinder heads are 

secured with our high performance 11mm 

steel studs and sealed with a Cosworth 

high performance stopper layer steel 

head gasket. Finally, we install one of our 

blue-printed, high pressure oil pumps for 

maximum lubrication. This proven engine 

combination has been used by top teams 

to win race and rally events in both North 

America, Asia and Europe. 

8 



Subaru - NOrth aMericaN SPec 2004-2006 eJ25 “cS600 & cS600X” 

20000161 Subaru EJ25 (2 5L) 2004-2006 w/ Big Valve Cylinder heads and KK3766 Cams-STD Crank 8 2:1cr 

20000162 Subaru EJ25 (2 5L) 2004-2006 w/ Big Valve Cylinder heads and KK3766 Cams-Billet Crank 8 2:1cr 

20003488 Subaru EJ25 (2 6L) 2004-06 w/ Big Valve Cylinder heads and KK3766 Cams-81mm Crank 8 2:1cr 

20007711 Subaru EJ25 (2 6L) 2004-06 w/ Big Valve Cylinder heads and KK3766 Cams-81mm Crank 9 2:1cr 

Subaru - NOrth aMericaN SPec 2007 eJ25 “cS600 & cS600X” 

20002504 Subaru EJ25 (2 5L) 2007 w/ Big Valve Cylinder heads and KK3766 Cams-STD Crankshaft 8 2:1cr 

20002503 Subaru EJ25 (2 5L) 2007 w/ Big Valve Cylinder heads and KK3766 Cams-Billet Crankshaft 8 2:1cr 

20007706 Subaru EJ25 (2 5L) 2007 w/ Big Valve Cylinder heads and KK3766 Cams-STD Crank 9 2:1cr 

20007705 Subaru EJ25 (2 5L) 2007 w/ Big Valve Cylinder heads and KK3766 Cams-Billet Crank 9 2:1cr 

20007710 Subaru EJ25 (2 5L) 2007 w/ Big Valve Cylinder heads and KK3766 Camshafts-STD Crankshaft 9 2:1cr 

20007709 Subaru EJ25 (2 5L) 2007 w/ Big Valve Cylinder heads and KK3766 Camshafts-Billet Crankshaft 9 2:1cr 

20003489 Subaru EJ25 (2 6L) 2007 w/ Big Valve Cylinder heads and KK3766 Camshafts-81mm Crank 8 2:1cr 

20007712 Subaru EJ25 (2 6L) 2007 w/ Big Valve Cylinder heads and KK3766 Camshafts-81mm Crank 9 2:1cr 

Subaru - eurOPeaN/aSia SPec eJ25 iMPreza 2004-2006 eJ25 “cS600 & cS600X” - iNcluDeS eNgiNe aSSeMbly with cyliNDer heaDS, 

caMShaftS, Oil PuMP aND caM cOverS 

SB8008 Subaru EJ25 (2 5L) 2004-06 w/ Big Valve Cylinder heads and KK3920 Camshafts-STD Crank 8 2:1cr 

20007707 Subaru EJ25 (2 5L) 2004-06 w/ Big Valve Cylinder heads and KK3920 Camshafts-STD Crank 9 2:1cr 

20003490 Subaru EJ25 (2 6L) 2004-06 w/ Big Valve Cylinder heads and KK3920 Cams 81mm Billet Crank 8 2:1cr 

20007708 Subaru EJ25 (2 5L) 2004-06 w/ Big Valve Cylinder heads and KK3920 Camshafts-Billet Crank 9 2:1cr 

20000160 Subaru EJ25 (2 5L) 2004-06 w/ Big Valve Cylinder heads and KK3920 Camshafts-Billet Crank 8 2:1cr 

Includes engine assembly with cylinder heads, camshafts, oil pump and cam covers

Features 

■ New Subaru EJ25 STI Engine case 

■ New Subaru EJ25 STI Forged 

Crankshaft 

■ Optional Cosworth Billet Crankshaft 

(79/81mm stroke available) 

■ Cosworth forged H-beam Connecting 

rods 

■ Cosworth Forged Pistons and rings 

■ Cosworth motorsport Tri-metal bearings 



■ Enlarged intake and exhaust ports 

■ Large diameter stainless steel intake 

valves 

■ Large diameter inconel exhaust valves 

■ Hi-rev, dual valve springs 

■ Titanium retainers 

■ Hardened steel spring platforms 

■ Multi angle valve job 

■ CNC machined port finish 

■ Knife edge port divider 

■ Cosworth S2 High lift camshafts 

■ Valve lash set 

■ Cosworth high pressure oil pump 

■ Cam covers 

■ Cosworth serial number 



Subaru - iMPreza 2007 Sti eJ25 “cS600 & cS600X” 

20002504 Subaru EJ25 (2 5L) 2007 w/ Big Valve Cylinder heads and KK3766 Camshafts-STD Crank 8 2:1cr 

20002503 Subaru EJ25 (2 5L) 2007 w/ Big Valve Cylinder heads and KK3766 Camshafts-Billet Crank 8 2:1cr 

20003489 Subaru EJ25 (2 6L) 2007 w/ Big Valve Cylinder heads and KK3766 Cams 81mm Billet Crank 8 2:1cr 

20007713 Subaru EJ25 (2 6L) 2007 w/ Big Valve Cylinder heads and KK3766 Cams 81mm Billet Crank 9 2:1cr 

Subaru iMPreza 2008+ Sti eJ25 “cS600 & cS600X” 

20010271 Subaru EJ25 (2 5L) 2008-09 Big Valve heads & 20007395 Camshafts- 79mm STD Crankshaft 8:2:1 cr 

20010272 Subaru EJ25 (2 5L) 2008-09 Big Valve heads & 20007395 Camshafts-79mm Billet Crankshaft 8:2:1 cr 

20010273 Subaru EJ25 (2 5L) 2008-09 Big Valve heads & 20007395 Camshaft -79mm STD Crankshaft 9 2:1 cr 

20010274 Subaru EJ25 (2 5L) 2008-09 Big Valve heads & 20007395 Camshafts - 79mm Billet Crankshaft 9 2:1 cr 

20010275 Subaru EJ25 (2 6L) 2008-09 Big Valve heads & 20007395 Camshafts- 81mm Billet Crankshaft 8:2:1cr 

20010276 Subaru EJ25 (2 6L) 2008-09 Big Valve heads & 20007395 Camshafts- 81mm Billet Crankshaft 9:2:1cr 

Subaru Engine Testing 

9

Forged Pistons 

With 50 years of world class engine design 

and manufacturing experience, Cosworth’s 

intimate knowledge of the interaction 

between the piston and other engine 

components gives the us the distinct 

advantage in piston design resulting in the 

finest piston available. 

The piston is one of the most important 

components within the engine. It can be 

subjected to directional change up to 285 

times every second and must withstand 

acceleration forces of 8,500 Gs. Cosworth 

high performance forged pistons are 

designed and engineered to withstand 

this type of punishment and still perform. 

All Cosworth pistons are manufactured 

using the same methods as our Formula 

One pistons and include features such as 

anti-scuff skirt coating, ultra-strong pins, 

polished top and patented anti-detonation 

bands. Additionally, each application uses 

a unique forging to minimize weight and 

ensure the strongest possible piston. 

10 

Subaru EJ25, 9 2:1 

Features & Benefits: 

■ Skirt profile & oval technology - reduces engine noise, increases life & performance 

■ F1 quality forgings - proprietary CosAl 010 for high stress applications 

■ Oil and combustion gas control features - reduced blow-by and oil consumption 

■ Offset pin bores - for reduced engine noise 

Anti-detonation bands 

Xylan skirt coating 

Polished crown 

Mitsubishi 4G63 

Forged Piston Sets (Includes pistons, rings, pins and clips) 


10001430 Subaru WRX STI EJ25 (2 5L) 99 5mm 8 2:1cr 


10001432 Subaru WRX STI EJ25 (2 5L) 100 mm 8 2:1cr 

10001445 Subaru WRX EJ20 (2 0L) 92 mm 8 0:1cr 

10001446 Subaru WRX EJ20 (2 0L) 92 5mm 8 0:1cr 

10001447 Subaru WRX EJ20 (2 0L) 93mm 8 0:1cr 

Subaru 

10001433 Subaru WRX STI EJ25 (2 6L) 99 5mm 8 2:1cr (For use with 81mm crankshaft) 


10001435 Subaru WRX STI EJ25 (2 6L) 100 mm 8 2:1cr (For use with 81mm crankshaft) 

10001442 Subaru WRX EJ20 (2 2L) 92 mm 8 0:1cr (For use with 79mm crankshaft) 

10001443 Subaru WRX EJ20 (2 2L) 92 25mm 8 0:1cr (For use with 79mm crankshaft) 

10001444 Subaru WRX EJ20 (2 2L) 92 5mm 8 0:1cr (For use with 79mm crankshaft) 


Optimised forging 

Subaru EJ25 

Continued ->

Features Include: 

■ Unique forgings for each application 

■ ‘Xylan’ anti scuff skirt coating 

■ Polished tops (reduces carbon build up 

and relieves stress) 

■ Manufactured from proprietary alloy 

(CosAl 010) 

■ Ultra strong pin 

■ Patented anti-detonation bands 

■ Supplied with full ring pack 

Cosworth Tech: Green Pistons 

Xylan is a fluoropolymer coating 

designed for use on various engine 

components and fasteners Cosworth 

pistons use xylan coating to provide 

lubrication and control friction, wear 

resistance, heat resistance, nonstick 

and release properties and, at the 

same time, can also protect from 

corrosion This is the same coating 

we use on many of our ultra-high 

performance race engines 

Forged Piston Sets (Includes pistons, rings, pins and clips) 



10001438 Subaru WRX STI EJ25 (2 5L) 100 mm 9 2:1cr 



10001441 Subaru WRX STI EJ25 (2 6L) 100 mm 9 2:1cr (For use with 81mm crankshaft) 

NiSSaN 

10001466 Nissan VQ35 (3 5L) High CR 95 5mm 11 0:1cr (Left and right hand bank) 

10001467 Nissan VQ35 (3 5L) High CR 96 mm 11 0:1cr (Left and right hand bank) 

10001468 Nissan VQ35 (3 5L) Low CR 95 5mm 8 8:1cr (Turbo application) 

10001469 Nissan VQ35 (3 5L) Low CR 96 mm 8 8:1cr (Turbo application) 

10001470 Nissan SR20DET 86mm 8 5:1cr 

10001471 Nissan SR20DET 86 5mm 8 5:1cr 

TBA Nissan RB26DETT 86 5mm 8 5:1cr-Stroker 

TBA Nissan RB26DETT 87 mm 8 5:1cr-Stroker 

TBA Nissan RB26DETT 87 5mm 8 5:1cr-Stroker 

20023158 Nissan VR38DETT 95 5mm 9 0:1cr 

10001448 Mitsubishi Evo IV-IX 4G63 (2 0L) 85mm 8 8:1cr 

MitSubiShi 

10001449 Mitsubishi Evo IV-IX 4G63 (2 0L) 85 5mm 8 8:1cr 

10001450 Mitsubishi Evo IV-IX 4G63 (2 0L) 86mm 8 8:1cr 

10001451 Mitsubishi Evo IV-IX 4G63 (2 2L) 85mm 8 8:1cr use with 94mm crank (PA2701+100) 

10001452 Mitsubishi Evo IV-IX 4G63 (2 2L) 85 5mm 8 8:1cr use with 94mm crank (PA2701+100) 

10001453 Mitsubishi Evo IV-IX 4G63 (2 2L) 86mm 8 8:1cr use with 94mm crank (PA2701+100) 

10001454 Mitsubishi 4B11T (2 0L) 86mm 9 2:1cr 

10001455 Mitsubishi 4B11T (2 0L) 86 5mm 9 2:1cr 

10001456 Mitsubishi 4B11T (2 0L) 87mm 9 2:1cr 

10001457 Mitsubishi 4B11T (2 2L) 86mm 9 2:1cr Stroker for use with 94mm crankshaft 

10001458 Mitsubishi 4B11T (2 2L) 86 5mm 9 2:1cr Stroker for use with 94mm crankshaft 

10001459 Mitsubishi 4B11T (2 2L) 87mm 9 2:1cr Stroker for use with 94mm crankshaft 

10001460 Mitsubishi 4B11T (2 2L) 86mm 10:1cr Stroker for use with 94mm crankshaft 

10001461 Mitsubishi 4B11T (2 2L) 86 5mm 10:1cr Stroker for use with 94mm crankshaft 

10001462 Mitsubishi 4B11T (2 2L) 87mm 10:1cr Stroker for use with 94mm crankshaft 

10001463 Honda K20A 86mm 12:1cr 

10001464 Honda K20A 86 25mm 12:1cr 

10001465 Honda K20A 86 5mm 12:1cr 

hONDa 

20006695 Honda K20A 86mm 9:1cr (for forced induction applications) 

20006696 Honda K20A 86 5mm 9:1cr (for forced induction applications) 

20006697 Honda K20A 87mm 9:1cr (for forced induction applications) 

TBA Toyota 2JZ-GTE 87mm 8 5:1cr 

tOyOta 

Nissan VQ35 High Compression 

11

Performance Ring Sets 

Developed using the latest technologies, 

and highest quality materials, Cosworth 

Performance Ring Sets are designed 

to meet the demands of modern high 

performance engines for higher power 

output, improved sealing, lower friction, 

and longer life. 

Piston Ring Compressor 

Cosworth Cylindrical Ring Compressors 

are precision machined to exact tolerance 

to ensure easy piston installation on most 

engines. They feature a smooth, tapered 

bore along with a knurled top ring to 

securely hold it in place while installing 

the piston. Each tool is machined form 

high grade aluminium and features a hard 

anodised finish. 

12 

Cosworth Tech: Ring Sets 

Performance Ring Sets for Cosworth Pistons 


20001515 Subaru WRX STI EJ25 (2 5L) 99 5mm 

20001516 Subaru WRX STI EJ25 (2 5L) 99 75mm 

20001517 Subaru WRX STI EJ25 (2 5L) 100 mm 

20005160 Subaru WRX EJ20 (2 0L) 92 mm 

20005161 Subaru WRX EJ20 (2 0L) 92 5mm 

Subaru 

20003605 Subaru WRX EJ20 (2 0L) 92 mm (Use with Stroker pistons 20002489/ 20003685) 

20003607 Subaru WRX EJ20 (2 0L) 92 5mm (Use with Stroker pistons 20002491/ 20003687) 

20001512 Nissan VQ35 (3 5L) 95 5mm 

20001514 Nissan VQ35 (3 5L) 96 mm 

PR7317 Mitsubishi Evo 4G63 (2 0L) 85mm 

20002246 Mitsubishi Evo 4G63/4B11 86mm 

20005705 Mitsubishi Evo 4B11 86 5mm 

20005706 Mitsubishi Evo 4B11 87mm 

20008832 Tool -85 00Mm Ring Compressor 













NiSSaN 

MitSubiShi 

tOOl 

Cosworth Performance Ring Sets are comprised of a chrome top ring, an iron second 

ring, and three-piece oil ring Some Cosworth Performance Ring Sets offer upper 

rings that are gas nitride treated for quicker break-in, lower wear, and improved 

sealing Manufacturing tolerances exceed OEM standards Axial tolerance is +/- 

0 0002” and radial tolerance is +/- 0 0005”

Spare Piston Pins and Circlips 

Cosworth Pistons feature heavy duty, ultra 

strong piston pins designed for the higher 

stress and elevated load levels found in 

high performance engines. Spare parts are 

available for routine engine rebuilds. 

For ease of circlip installation on Subaru 

engines, we offer an exclusive installation 

tool engineered to simplify the task. This 

high quality tool is machined from steel to 

ensure years of trouble free use. 

Spare Piston Pins and Circlips 


PA2674 23mm Pin, Subaru EJ20 / EJ25 Piston 

PA1846 22mm Pin, Mitsubishi 4G63 Piston 

PA1251 22mm Pin, Nissan VQ Piston 

PP5433 Circlip, 23mm Subaru EJ20 / EJ25 Piston 2 req per piston 

PP2371 Circlip, 22mm Nissan / Mitsubishi Piston 2 req per piston 

SB8004 Circlip install tool, Subaru 

13

Billet Crankshafts 

Increased engine performance often 

means increased engine speed and load. 

Original factory crankshafts may not 

be able to withstand the added stress, 

resulting in catastrophic engine failure. 

Additionally, many OE crankshafts rod 

journals are lubricated from only one 

main oil feed. Cosworth billet crankshafts 

feature full-flow oiling whereby each 

rod journal is lubricated from two main 

sources. This provides superior lubrication 

during sustained high rpm use preventing 

rod bearing failure. Cosworth Subaru 

crankshafts are manufactured entirely from 

high grade steel in a light-weight, high 

strength design with a unique Isotropic 

Super Finish (ISF®). 


■ Superior lubrication 

■ Profiled counterweights 

■ High strength 

■ Light weight 

Cosworth Tech: Isotropic Super Finish (ISF®) 

The ISF® process is a chemically 

accelerated vibratory mass finishing 

process Any time two metal parts come 

into contact with each other, the resulting 

friction causes heat build up These high 

temperatures cause wear and over time 

reduce efficiency and eventually create 

the need for replacement By creating 

a smooth and shiny finish, the ISF® 

■ Allows a freer movement of parts with 

less surface resistance 

■ Extends life of parts and reduces risk of 

part failure during operation 

■ Reduces maintenance expenses and 

fuel costs 

■ Improves oil shedding 

■ Increases power output resulting in 

increased speed 

14 

process improves the life and efficiency 

of moving metal parts Increased life 

translates into lower operating costs as 

well as better performance In extreme 

environments, such as automobile or 

motorcycle racing, every component 

must work in harmony at 100% capacity 

Races are won and lost by fractions of a 

second, so it all comes down to getting 

ISF® - ISF is a registered trademark of REM Chemical Inc All Rights Reserved 

Billet Crankshafts 


20004138 

MitSubiShi 

Mitsubishi EVO 4G63 (2 2L conversion) 94mm stroke - Fully counter-weighted Billet Steel, F1 Rod Bearing type 

(must use with Cosworth connecting rod 20020201) 

20006577 Mitsubishi EVO 4B11T (2 2L conversion) 94mm stroke - Fully counter-weighted Billet Steel 

20002315 Subaru WRX STI EJ25 (2 5L) 79mm stroke - Light weight version Billet Steel 

20002316 Subaru WRX STI EJ25 (2 5L) 81mm stroke - Light weight version Billet Steel 

the most power output possible With the 

ISF® process, the energy normally lost 

to friction is now available in the form of 

increased power output Once friction 

is reduced, the engine will run cooler 

allowing for longer durability of parts and 

fewer failures

Stroker Engine Kits 

Cosworth stroker kits are the perfect way 

to add displacement, torque and power 

to your engine. Each kit includes select 

matched components from our parts list 

ensuring reliable performance. 

Subaru EJ25 2.6L 

■ Cosworth Forged Pistons (99.5mm) 

■ Cosworth Fully Counterweighted Billet 

Crankshaft (81mm) 

■ Forged Cosworth Connecting Rods 

■ Cosworth Rod and Main Bearings 

■ Cosworth Piston Rings 

Mitsubishi 4G63 (Evolution VII-IX) 2.2L 

■ Cosworth Forged Pistons (86mm) 






Mitsubishi 4B11T (Evolution X) 2.2L 

■ Cosworth Forged Pistons (86mm) 






Stroker Kits 


KK3831 Mitsubishi Evo 4G63 (2 2L) - 94mm Crank 

20007783 Mitsubishi Evo 4B11T (2 2L) - 94mm Crank 

20002500 Subaru EJ25 (2 6L) w 81mm Billet Crankshaft 

MitSubiShi 

Subaru 

20002501 Subaru EJ20 (2 2L) w 79mm Forged Crankshaft (92mm Pistons) 

20004359 Subaru EJ20 (2 2L) w 79mm Forged Crankshaft (92 5mm Pistons) 

20002502 Subaru EJ20 (2 2L) w 79mm Billet Crankshaft (92mm Pistons) 

15

Forged Connecting Rods 

The connecting rod is the vital link between 

the piston and power. When engine output 

is increased, the demands placed on the 

connecting rod increase as well. To ensure 

engine reliability in all conditions, original 

connecting rods should be replaced with 

heavy duty specification parts. Cosworth 

Forged Connecting Rods are manufactured 

from high strength 4340 (EN24) steel and 

machined to exacting tolerances. 

Features: 

■ Rods include genuine Cosworth H11 

tool steel rod bolts (260,000psi). 

■ Proprietary forging made in the USA. 

■ Detailed machined work to maintain 

optimum weight and strength. 

■ Solid beam design for high power 

applications 

■ “Radial Truss” small end for superior 

strength and reduced reciprocating 

mass 

■ Manufactured from 4340 (EN24) steel 

16 


Forged Connecting Rods 

ctr. to ctr. 

(mm) 

Subaru 

P.e. bore 

(mm) 

b.e. bore 

(mm) 

20002587 Subaru WRX STI EJ20 (2 0L) set of four 130 48 23 03 55 01 530 

MitSubiShi 

20002632 Mitsubishi Evo 4G63 (2 0L) set of four 150 01 22 03 48 00 568 

20015908 

Mitsubishi Evo 4G63 (2 2L) set of four for 

use with Cosworth crankshaft 20004138 

150 01 22 03 52 89 565 

20002596 Mitsubishi 4B11T (2 0L) set of four 143 74 23 03 55 01 565 

20007184 

Mitsubishi 4B11T (2 2L) 94mm Stroker Rod 

set of four 

142 72 21 03 55 01 556 

NiSSaN 

20002585 Nissan VQ35 (3 5L) set of six 144 17 22 03 55 01 547 

20007115 Nissan VQ35 (3 8L) Stroker Rod set of six 141 71 22 03 55 01 538 

20002588 Nissan RB26 (2 6L) set of six 121 51 21 02 51 02 507 

20002589 Nissan SR20 (2 0L) set of four 136 30 22 03 51 02 564 

20011563 Nissan VR38 (3 8L) set of six 164 99 23 03 59 00 629 

hONDa 

20002590 Honda K20 (2 0L) set of four H-Beam 139 03 22 03 51 02 430 

total 

Nominal 

weight (g)

High Performance Cylinder Head Stud Kits 

Essential for high performance engine 

builds, heavy duty head studs reduce 

cylinder head movement in high boost 

or high compression engines optimising 

cylinder head to block sealing. Cosworth 

Ultra High Performance Head Studs 

are manufactured from H11 tool steel 

with 260,000psi tensile strength and 

come complete with nuts and washers. 

Manufactured with hex broach end for 

ease of installation. 

Additionally, genuine Cosworth head studs 

utilize a base seating feature to evenly 

distribute maximum load on the stud and 

not the threads. This feature is typically 

found only in high level race engines. 

Features: 

■ Essential for high power applications 

■ Superior strength compared to other 

brands 

■ High clamping force helps to seal block 

to cylinder head joint 

■ Hex broach ends ease installation 

■ Roll die formed threads 

■ 260,000psi+ tensile strength 

■ Special heat treat process includes 

heating in vacuum sealed furnace and 

quenched in a nitrogen chamber for 

precision control 

High Performance Cylinder Head Stud Kits (180,000psi tensile strength) 


PR7243 Subaru WRX STI EJ25/EJ20 (2 5L) 11mm 

PR7420 Nissan VQ35 (3 5L) 

PR7767 Nissan SR20DET (2 0L) 

PR7843 Mitsubishi Evo 4G63 (2 0L) 

PR7422 BMW MINI Cooper/Cooper S (1 6L) 

Ultra High Performance Head Stud Kits (260,000psi tensile strength) 


20002440 Subaru WRX STI EJ25/EJ20 (2 5L) 11mm 

20002442 Mitsubishi Evo 4G63 (2 0L) 11mm 

20006025 Mitsubishi Evo X 4B11T Head Stud Kit 

20002444 Nissan SR20DET (2 0L) 11mm 

17

High Performance Camshafts 

Cosworth has been engineering camshafts 

for nearly 50 years. That coupled with 

years of innovative multi valve cylinder head 

design ensures our camshaft designs are 

the most efficient in providing maximum 

usable power across the widest power 

band. 

Each cam is ground from a new blank 

and finished using the same procedures 

we use in our extreme level race engines. 

Cosworth camshafts are the perfect 

compliment to our CNC Ported Big Valve 

Cylinder Heads. Our cams are profiled to 

increase boost response thereby increasing 

engine torque and power and are fully 

compatible with our CNC Ported Big Valve 

Cylinder Heads. 

Performance Camshafts 

Part No. Description Specification 

KK3766 

KK3765 

KK3920 

20007395 

20005187 

KK3814 

Subaru 

Subaru WRX STI EJ25 (2 5L) Set of four (AVCS Type) S2 Grind 

(Electronic throttle) - North American spec 

Subaru WRX EJ20 (2 0L) Set of four 9/99 - 8/05 non AVCS JDM 

EJ205 ~ 9/01 - 8/05 non AVCS USDM WRX EJ205 engines - Euro/ 

Asian spec 

Subaru WRX STI EJ25/EJ20 Set of four (AVCS Type) S2 Grind (Cable 

throttle) - Japan / European spec 

Subaru WRX STI EJ257B Set of four (Dual AVCS) S2D Grind - North 

American , Asian and European spec 

Subaru WRX EJ20 (2 0L) Set of four Compatible with GC8 Version IV 

(09/1997) - Euro/Asian spec 

Subaru WRX STI EJ25 (2 5L) Set of four (AVCS Type) North American 

spec - North American spec 

MitSubiShi 

Int "278" deg 10 7mm lift / Exh "274" 

deg 10 mm lift 

"272" deg 10mm lift 





"270" deg 10 4mm lift 

Int ”260” deg 9 6mm lift / Exh “260” 

deg 9 6mm lift 

KK3805 Mitsubishi Evo 4G63 (2 0L) Pr (1 intake and 1 exhaust cam) M1 Grind "264" deg 10 2 mm lift 

KK3806 Mitsubishi Evo 4G63 (2 0L) Pr (1 intake and 1 exhaust cam) M2 Grind "272" deg 11 mm lift 

20002513 Mitsubishi Evo 4G63 (2 0L) Pr (1 intake and 1 exhaust cam) M3 Grind 

KK3921 

20002517 

20004124 

Mitsubishi Evo IX 4G63 (2 0L) Pr (1 intake and 1 exhaust cam) M2 

Grind 

Mitsubishi Evo IX 4G63 (2 0L) Pr (1 intake and 1 exhaust cam) M3 

Grind 

Mitsubishi Evo X 4B11 (2 0L) Pr (1 intake and 1 exhaust cam) MX1 

Grind 

MitSubiShi “Swb” race caMShaftS 

Intake"280" deg 11 6mm / Exhaust 

"272" deg 11mm lift 

MIVEC Intake/Exhaust "272" deg 11 

mm lift 

MIVEC Intake "280" deg 11 6mm lift / 

Exhaust "272" deg 11 mm lift 

MIVEC Intake "266" deg 10 8mm / 

Exhaust "266" deg 10 4mm lift 

20002698 Mitsubishi Evo 4G63 (2 0L) "280" Intake cam 280 deg / 11 6 mm 

20016008 Mitsubishi Evo 4G63 (2 0L) "290" Intake cam 290 deg / 11 6 mm 

20004722 Mitsubishi Evo IX 4G63 MIVEC (2 0L) "280" Intake cam 280 deg / 11 6 mm 

20016009 Mitsubishi Evo IX 4G63 MIVEC (2 0L) "290" Intake cam 290 deg / 11 6 mm 

20016006 Mitsubishi Evo 4-9 4G63 (2 0L) "280" Exhaust cam 280 deg / 11 6 mm 

20016007 Mitsubishi Evo 4-9 4G63 (2 0L) "290" Exhaust cam 290 deg / 11 6 mm 

NiSSaN 

20002507 Nissan VQ35 "287hp" Set (2 intake and 2 Exhaust cams) "ZK1" Grind 

20002508 Nissan VQ35 “287hp” Set (2 intake and 2 Exhaust cams) “ZK2” Grind 

20002510 Nissan VQ35 “Rev up” Set (2 intake and 2 Exhaust cams) “ZK1” Grind 

20002511 Nissan VQ35 “Rev up” Set (2 intake and 2 Exhaust cams) “ZK2” Grind 

Cosworth Tech - Subaru Cams 

Our Subaru AVCS cams are available for both North American and Japanese/European 

applications. While cam profiles are the same, cam angle triggers are significantly 

different AVCS camshafts for North American applications use a series of three slots 

to activate the cam angle sensor Japanese/European applications rely on four raised 

triggers to activate the sensor If in doubt, check your original cams before ordering 

18 

Intake "268" deg 10 4mm lift / 

Exhaust "268" deg 9 5mm lift 

Intake “270” deg 10 65mm lift / 

Exhaust “270” deg 10 65mm lift 





North American Japanese/European


■ Ground from new blanks 

■ Engineered and tested profiles 

■ Broad power band 

■ Compatible with Cosworth CNC ported 

Big Valve Cylinder Heads 

Mitsubishi EVO 4G63 Mivec 

Subaru WRX STi EJ257B 

Subaru AVCS 

Mitsubishi 4B11T 

Nissan VQ35 

19

Ultra High Performance Engine Bearings 

Engine bearings are one of the most vital 

components within an engine and are 

often overlooked when considering high 

performance upgrades Performance 

engineered, multi-layer bearings generate 

less heat than normal bearings by reducing 

friction Cosworth race bearing sets feature 

unique combinations of design, metallurgy 

and engineering to deliver performance 

in extreme conditions Cosworth race 

bearings sets are available in three sizes 

to accommodate most applications 

engineered with the following features: 

■ High strength overlay plate with 

reduced thickness for better oil control 

and less friction 

■ Hardened steel backing on all 

connecting rod bearings 

■ Increased crush for better retention 

■ 3/4 grooving on main bearings 

providing optimum oil supply 

■ Tight consistent wall tolerances 

■ Oversize chamfers where applicable 

■ Flash plating eliminated for improved 

heat transfer 

■ Tested to over 1000 horsepower! 

20 

High Performance Engine Bearings 


Subaru eJ25 / eJ20 

20002720 Subaru WRX/STI EJ25/ EJ20 Main Bearing Set - Tri Metal Size 0 

20002721 Subaru WRX/STIEJ25/ EJ20 Rod Bearing Set - Tri Metal Size 0 

PR7940 Subaru WRX/STI EJ25/ EJ20 Main Bearing Set - Tri Metal Size 1 

PR7889 Subaru WRX/STIEJ25/ EJ20 Rod Bearing Set - Tri Metal Size 1 

SB0006 Subaru WRX/ STI EJ25/EJ20 Main Bearing Set - Tri Metal Size 2 

SB0007 Subaru WRX/STI EJ25/EJ20 Rod Bearing Set - Tri Metal Size 2 

MitSubiShi evO 4g63 “evO” 1992-2006 

20002723 Mitsubishi Evo 4G63 (2 0L) Main Bearing Set - Tri Metal Size 0 

20002722 Mitsubishi Evo 4G63 (2 0L) Rod Bearing Set - Tri Metal Size 0 

PR7894 Mitsubishi Evo 4G63 (2 0L) Main Bearing Set - Tri Metal Size 1 

PR7893 Mitsubishi Evo 4G63 (2 0L) Rod Bearing Set - Tri Metal Size 1 

PR7427 Mitsubishi Evo 4G63 (2 0L) Main Bearing Set - Tri Metal Size 2 

PR7428 Mitsubishi Evo 4G63 (2 0L) Rod Bearing Set - Tri Metal Size 2 

PR7429 Mitsubishi Evo 4G63 (2 0L) Thrust Bearing set 

MitSubiShi 4b11t evO X 

20007172 Mitsubishi Evo X 4B11T Main Bearing Set - Tri Metal Size 0 

20007175 Mitsubishi Evo X 4B11T Rod Bearing Set - Tri Metal Size 0 





20007178 Mitsubishi Evo X 4B11T Thrust Bearing Set 

NiSSaN vg35De 

20002725 Nissan VQ35 (3 5L) Main Bearing Set - Tri Metal Size 0 

20002724 Nissan VQ35 (3 5L) Rod Bearing Set - Tri Metal Size 0 

PR7911 Nissan VQ35 (3 5L) Main Bearing Set - Tri Metal Size 1 

PR7910 Nissan VQ35 (3 5L) Rod Bearing Set - Tri Metal Size 1 

PR7853 Nissan VQ35 (3 5L) Main Bearing Set - Tri Metal Size 2 

PR7854 Nissan VQ35 (3 5L) Rod Bearing Set - Tri Metal Size 2 

PR7859 Nissan VQ35 (3 5L) Thrust Bearing Set

Our bearings are available in 3 sizes: 0 , 1, 

2. We do not offer undersized bearings for 

ground crankshafts. 

■ Size 1 is what we used to call “STD” 

■ Size 2 is what we used to call “RACE” 

■ Size 0 provides .025mm or .001” less oil 

clearance than our size 1 bearing 

■ Size 2 provides .025mm or .001” more 

oil clearance than our size 1 bearing 

Bearing half shells can be mixed and match 

to provide the incremental changes in oil 

clearance However it is imperative that 

bearing clearances are measured before 

selecting the appropriate bearing size. 

High Performance Engine Bearings 


NiSSaN Sr20Det (eXcePt rNN14 PulSar gti-r) 

20002727 Nissan SR20 (2 0L) Main Bearing Set - Tri Metal Size 0 

20002726 Nissan SR20 (2 0L) Rod Bearing Set - Tri Metal Size 0 

PR7896 Nissan SR20 (2 0L) Main Bearing Set - Tri Metal Size 1 

PR7895 Nissan SR20 (2 0L) Rod Bearing Set - Tri Metal Size 1 

PR7851 Nissan SR20 (2 0L) Main Bearing Set - Tri Metal Size 2 

PR7852 Nissan SR20 (2 0L) Rod Bearing Set - Tri Metal Size 2 

PR7937 Nissan SR20 (2 0L) Thrust Bearing Set 

NiSSaN rb25/26 

20002729 Nissan RB25/26 Main Bearing Set - Tri Metal Size 0 

20002728 Nissan RB25/26 Rod Bearing Set - Tri Metal Size 0 

PR7892 Nissan RB25/26 Main Bearing Set - Tri Metal Size 1 

PR7891 Nissan RB25/26 Rod Bearing Set - Tri Metal Size 1 

PR7655 Nissan RB25/26 Main Bearing Set - Tri Metal Size 2 

PR7656 Nissan RB25/26 Rod Bearing Set - Tri Metal Size 2 

hONDa K20/K23/K24 (eXcePt a3) 

20002731 Honda K20 (2 0L) Main Bearing Set - Tri Metal Size 0 

20002730 Honda K20 (2 0L) Rod Bearing Set - Tri Metal Size 0 

PR7914 Honda K20 (2 0L) Main Bearing Set - Tri Metal Size 1 

PR7912 Honda K20 (2 0L) Rod Bearing Set - Tri Metal Size 1 

PR7915 Honda K20 (2 0L) Main Bearing Set - Tri Metal Size 2 

PR7913 Honda K20 (2 0L) Rod Bearing Set - Tri Metal Size 2 

PR7916 Honda K20 (2 0L) Thrust Bearing Set 

21

Kevlar High Performance Timing Belts 

Cosworth Kevlar High Performance Timing 

belts are 300% stronger than original 

equipment timing belts and are the perfect 

compliment when installing Cosworth 

camshafts or cylinder heads. 

■ High saturation HNBR elastomeric 

composites ensure durability and heat 

resistance 

■ Durable nylon fibre provides extra wear 

resistance and increased tooth strength 

■ Kevlar backing improves strength 

22 

Cosworth Kevlar High Performance Timing Belts 


20004950 Timing Belt – Mitsubishi 4G63 Heavy Duty, All 

20004952 Balance Belt - Mitsubishi 4G63 Heavy Duty, All 

20004953 Timing Belt – Subaru EJ20/25 Heavy Duty, All 

20019487 Timing Belt - Nissan Skyline RB25/26

Intercooler Systems 

Subaru front-mount Intercooler 

System 2008+ STI - 20005378 

Front mounted intercoolers offer improved 

performance potential for Subaru 

applications. The Cosworth front mount 

intercooler for the 2008+ Subaru STI 

replaces the restrictive, heat-soak prone 

original top mounted core. The engineered 

system features an efficient large aluminium 

core with mandrel bent aluminium tubing 

for maximum performance up to and 

exceeding 600hp. The intercooler core 

is rubber mounted on a secure bracket 

system to help eliminate cracking and 

breakage. 

Installation is simplified as no cutting of 

vehicle is required 

Features 

■ Large efficient core available in anodised 

black finish for subtle appearance 

■ Large diameter mandrel bent aluminium 

tubing with grey powder coated finish 

■ 4-ply heavy duty silicone coupling hoses 

■ Isolated mounting system 

■ Liner hose clamps 

Intercooler Upgrade 


20014525 Mitsubishi EVO X Front Mount Intercooler (Uses factory piping) 

20019677 Mitsubishi EVO X Intercooler Hard Pipe Kit 

20005378 Subaru STI 2008+ Front Mount Intercooler System 

CAD Assembly 

Large efficient intercooler core 

Large diameter aluminium tubing 

23

Mitsubishi EVO X Front Mount 

Intercooler Upgrade - PN 20014525 

The Cosworth front mount intercooler for 

2008 and newer Mitsubishi Evolution X 

features cast end tanks and an efficient 

large core to ensure maximum charge 

air cooling capability. Steel brackets with 

rubber vibration isolators for optimal 

resistance to the fatigue failure common 

with hard mounted aluminium brackets. 

Installation does not require any vehicle 

modifications. 

Features 

■ Smooth transition cast aluminium end 

tanks for optimum airflow. Purposeful 

airflow management without the 

compromises of fabricated sheet metal 

end tanks. 

■ Large, efficient intercooler core ensure 

low restriction and high-efficiency heat 

transfer. 

■ Easy installation - under 30 minutes with 

simple hand tools, no modification to car 

needed 

■ Heavy duty steel brackets with rubber 

isolated mounting 

■ 4-ply heavy duty silicone couplers with 

liner hose clamps 

■ Made in USA 

■ Core size: 20” x 12.3” x 3.5” 

■ 55% increased flow over the factory OE 

intercooler 

■ Optional large-diameter hard intercooler 

pipe kit - Part number 20019677 

24 

Robust mounting system

EVO X Intercooler Pipe Upgrade Kit - 

PN 20019677 

The Cosworth Intercooler Pipe Upgrade 

for the Mitsubishi EVO X features large 

diameter single piece mandrel bent 

aluminium tubes with 4-ply silicone 

couplers and stainless steel liner type hose 

clamps and is designed to decrease turbo 

lag and increase power in your Mitsubishi 

Evolution X. 

The mounting location of the bypass 

valve has been optimised for reduced 

turbocharger lag and is compatible with 

both the original component and many 

aftermarket versions. 

Engineered to work with the factory 

intercooler or Cosworth intercooler kit 

(Cosworth part # 20014525) but may be 

compatible with other brands. 

Features 

■ Bright Silver, durable powder coated 

finish 

■ Relocated bypass valve for reduced 

turbocharger lag 

■ 2.5” / 63.5mm diameter tubing (hot side) 

■ 2.75” / 69.85mm diameter tubing (cold 

side) 

■ 4-ply silicone couplers 

■ Robust mounting system 

25

High Flow Intake Systems 

Cosworth’s High Flow Intake Systems 

feature increased diameter, large smooth 

radius bent aluminium inlet tubes for 

superior air flow management coupled with 

a high flow air filter for maximum air flow 

and performance. 

Each kit includes an integrated heat shield 

designed to isolate the air intake from 

engine heat - delivering cold air into the 

engine for superior power conversion. The 

filter element is large, conical in shape and 

engineered to dramatically reduce intake 

restriction resulting in additional power and 

torque. 

Up to 15% More Performance 

■ Lightweight aluminium mandrel shaped 

inlet tube for maximum airflow 

■ Conical Cosworth blue cotton gauze 

cleanable air filter with Cosworth 

embossed dry carbon composite end 

cap 

■ Integrated heat shield for cold air 

isolation 

■ Hardware kit included for easy, perfect fit 

■ Made in USA 

26 

High Flow Intake Systems 


20019421 2001-2007 Subaru Impreza WRX, 2004-2007 Subaru Impreza WRX STI 

20019422 2008-2010 Subaru Impreza WRX 

20019423 2008-2010 Subaru Impreza WRX STI 

20019424 2008-2010 Mitsubishi Lancer EVO X

Induction 

VQ35 Twin Plenum Intake Manifold - 

PN 20000063 

The Cosworth Twin Plenum Inlet Manifold 

for the Nissan VQ35DE has been designed 

to enhance mid-range and high RPM 

power. It features increased plenum volume 

for improved high RPM power while torque 

enhancing velocity stacks improve midrange 

power. With performance derived 

from countless hours of development 

including computational fluid dynamics, 

the Cosworth Twin Plenum Inlet Manifold 

is perfect for both normally aspirated and 

forced induction applications. Cast from 

lightweight aluminium alloy with carbon 

fibre end caps and includes all required 

mounting hardware. Will fit with original 

strut tower brace. Can be used with the 

factory fuel rail system or the Cosworth 

High Volume Fuel Rail kit. 

High-polished finish optional 

Mitsubishi 4B11T Intake Manifold 

The Cosworth Intake Manifold for the 

4B11T engine is designed for high 

performance and maximum horsepower 

and torque. The design has been 

engineered top Cosworth’s high standards 

of excellence and has been tested for 

maximum performance as well as durability. 

This intake manifold features a significantly 

Induction 


NiSSaN 

20000063 Nissan VQ35DE (3 5L) Twin Plenum Intake Manifold with Carbon plenum covers 

20005779 Nissan VQ35DE (3 5L) Twin Plenum Intake Manifold with Carbon plenum covers "Bright Polish Finish" 

20006438 Subaru High Volume Inlet Manifold 

Subaru 

20015678 TGV Delete Kit - Subaru EJ25 Top Feed Injectors 

TBA 4B11T Intake Manifold 

MitSubiShi 

larger plenum volume and larger tapered 

runners with airhorn inlets for improved 

airflow. The Cosworth manifold is designed 

with stock throttle body location. 

27

Subaru High Volume Air Intake Manifold - PN 20006438 

The Cosworth Subaru High Volume Inlet 

Manifold is cast from aluminium featuring 

large tapered runners with radiused inlets 

for improved air flow. Plenum volume has 

been substantially increased and tuned for 

power. Engineered for easy installation and 

is the key to making big power. 

28 

■ Substantially increased plenum volume 

■ Large, tapered runners with radiused 

inlets 

■ Tuned plenum volume and runner 

length/taper 

■ Over 10% increase in flow 

■ Integral vacuum manifold for connection 

of brake booster, boost gauge, MAP 

sensor, boost controller, etc. 

■ Will work with standard or forward 

mount throttle body configurations 

■ Stock throttle body location for 

compatibility with most aftermarket FMIC 

kits

TGV Delete Kit - PN 20015678 

The Cosworth Tumble Generating Valve 

(TGV) Delete Kit is designed to maximize 

airflow to your engine by eliminating the 

obstructions inherent to the OEM TGV 

intake ports. The TGV deletes are made 

of a fibre reinforced polymer to insulate 

the cylinder head from the intake tract, 

providing your engine with a cooler, 

denser charge of air. To further increase 

performance, the Cosworth TGV deletes 

are port matched to our CNC cylinder 

heads and intake manifold. This product 

is a direct fit for the 07+ Subaru STi due 

to the top feed injector design and due 

to a revision to the upper bolt pattern of 

the TGV, specifically moving the centre 

two M6 holes. With our manifold and 

top feed injectors, the TGV delete kit will 

work without issue on most WRX/STi 

applications 

■ 07+ Subaru STi specific, top feed 

injector specific 

■ Produced from fibre reinforced polymer 

to lower intake air temperatures 

■ Deletes factory Tumble Generating Valve 

for increased airflow 

■ Free flowing design, port matched to 

Cosworth CNC Cylinder head & intake 

manifold 

■ Includes high temp o-rings, shoulder 

bolts, and shims. 

■ New OEM Subaru injector o-rings 

included 

29

High Flow Synthetic Air Filters 

Cosworth High Flow Synthetic Air Filters 

are constructed from a proprietary 

synthetic, non-woven single layer, pleated 

polyester filter media that requires no 

oiling. For an OE-like fit, the filter housing 

is injection moulded from high impact 

polystyrene or polypropylene. Each 

Cosworth air filter has been engineered 

to fit the vehicles original air box providing 

a true cold air supply to the engine. 

Cosworth Performance Air Filters also 

provide increased air flow when compared 

to original equipment air filters. 

■ Improved performance 

■ Superior filtration 

■ Exceptional dust holding capacity 

■ Reduced restriction (10%+ compared to 

OE filters) 

■ Over 98% efficiency (ISO5011:200 Fine 

Dust Test) 

30 

Mitsubishi Evo 8/9 

Honda S2000 

Nissan 350Z / Subaru Impreza 

Mazda 3 

Honda Fit 

Toyota Tundra 

Subaru Legacy 2008+ STI 

Lexus IS250/350

Performance Air Filters 

Part No. Description year 

acura (hONDa) 

20005380 Acura Rsx 2002-2007 

20005380 Acura Rsx Type S 2002-2006 

citrOeN 

20006783 C-Crosser 2008-2009 

fOrD 

20002270 Maverick (2 4L) 1993-1998 

hONDa 

20002271 S2000 (2 0/2 2L) 1999-2009 

20005380 Integra Type R (2 0L) JDM 2001-2006 

20005380 Civic Type R (2 0L) 2000-2006 

20005380 Civic Type R (2 0L) JDM 2001-2005 

20005380 Civic (2 0L) 2001-2006 

20005380 Fr-V 2005-2008 

20005380 Cr-V 2002-2006 

20002272 Jazz (1 4L) 2007-2008 

20002273 Fit (1 5L) 2007-2009 

20002273 Fit JDM (1 3/1 5L) 2001-2006 

20005380 Stream (2 0L) 2001-2005 

20005380 Stepwagon (2 0L) 2001-2005 

20002273 Mobilio JDM (1 5L) 2001-2007 

20002273 Mobilio Spike JDM (1 5L) 2002-2007 

hOlDeN 

2002270 Calais (3 8L) 2002 

2002270 Commodore (3 8/5 0L) 1988-1996 

iNifiNiti 

20005381 G37 (3 7L) (Twin Air Box) 2008-2010 

20005381 G35 (3 5L) 2007-2008 

20002270 G35 (3 5L) 2003-2007 

20002270 G20 (2 0L) 1991-2002 

20005381 Ex35 (3 5L) 2008-2009 

20002270 Fx35 (3 5L) 2003-2008 

20002270 I35 (3 5L) 2002-2004 

20002270 I30 (3 0L) 1996-2001 

20002270 J30 (3 0L) 1993-1997 

20002270 Q45 (4 5L) 2001 

20002270 Qx4(3 3/3 5L) 1997-2003 

20002270 M30 (3 0L) 1990-1992 

iSuzu 

20002270 Gemini (1 5/1 7L) 1985 

leXuS 

20002281 IS250 2005-2009 

20002281 IS350 2006-2009 

20002281 IS220 2005-2009 

20002281 GS350 2005-2009 

20002281 GS430 2006 

lOtuS 

20002282 Elise 1 8L (Toyota Engine) 2004-2007 

MazDa 

20002273 RX-8 2003-2009 

20002275 MX-5 (1 8/2 0L) 2005-2008 

20002274 Mazda 3 (2 0/2 3L) 2003-2008 

20002274 Mazda 3 Mazdaspeed 2007-2008 



MitSubiShi 

20006783 Lancer Evo X 2008-2010 

20002277 Lancer Evo IX - IX 1996-2007 

20006783 Lancer (1 5/1 8/2 0L) 2008-2010 

20002277 Lancer (1 3/1 6/2 0L) 1999-2008 

20006783 Outlander (2 0/2 4L) Diesel 2007-2009 

20002277 Outlander (2 0/2 4L) 2003-2007 

20002277 Colt (1 3/1 6L) 1996-2005 

20002277 Mirage (1 5/1 8L) 1997-2004 

NiSSaN 

20002270 350Z 2003-2006 

20005381 350Z (Twin Air Box) 2007-2010 

20002270 R34 Skyline Gtr (2 6L) 1999-2002 

20002270 R33 Skyline Gtr (2 6L) 1995-1998 

20002270 R32 Skyline Gtr (2 6L) 1989-1994 

20002270 

Skyline Coupe V35 

(2 5/3 0/3 5L) 

2001-2006 

20002270 R34 Skyline (2 0/2 5L) 1998-2001 

20002270 R33 Skyline (2 0/2 5L) 1993-1998 

20002270 R32 Skyline (2 0/2 5L) 1989-1993 

20002270 R31 Skyline (2 0L) 1985-1989 

20002270 R30 Skyline (2 0/2 8L) 1981-1990 

20002270 Stagea (2 0/2 5/3 0/3 5L) 1996-2006 

20002270 300Zx (3 0L) 1987-1990 

20002270 200Sx (1 8/2 0L) 1988-1999 

20002270 

Silvia JDM (1 8 /2 0L) 

S12/13/14/15 

1980-2002 

20002270 Primera (1 6/1 8/2 0L) 1990-2007 

20002270 Xtrail (2 0/2 2/2 5L) 2001-2006 

20002270 Maxima (2 0/2 4/2 8/3 0/3 5L) 1982-2009 

20002270 Altima (2 4/2 5/3 5L) 1993-2008 

20002270 

Almera (1 5/1 8/2 0/2 2L) 

Incl Tino 

1995-2007 

20002270 Quest (3 5L) 2004-2008 

20002270 Sentra (1 6/1 8/2 0/2 5L) 1991-2006 

20002270 Terrano (2 4L) 1992-2005 

20002270 Navarra (3 0L) 2004-2005 

20002270 Xterra (3 3L) 2000-2004 

20002270 Pathfinder (2.7/3.0/3.3/3.5L) 1990-2004 

20002270 Frontier (3 3L) 1999-2004 

20002270 Patrol (4 2L) 1988-1997 

20002270 Serena (1 6/2 0/2 3L) 1992-2001 

20002270 Prairie (2 0/2 4L) 1989-1996 

20002270 Pickup (3 0L) 1990-1996 

20002270 QX (2 0/3 0L) 1995 

20002270 Sunny (1 5/1 6/1 7/1 8/2 0L) 1985-1993 

20002270 NX (1 6/1 8/2 0L) 1987-1993 

20002270 Stanza (2 4L) 1990-1992 

20002270 Axxess (2 4L) 1990-1991 

20002270 Bluebird (1 9/2 0L) 1982-1990 

20002270 Laurel (2 0/2 4/2 8/3 0L) 1980-1989 

20002270 Cedric (2 8L) 1983 

20002270 810 (2 4/2 8L) 1981 



OPel / vauXhall 

20002270 Corsa (1 5L Diesel) 1988-1993 

20002270 Vectra (1 7L) Turbo Diesel 1992-1995 

20002270 

20002270 

20002270 

Astra (1 7L) with Isuzu Diesel 

Engine 

Cavalier with Isuzu Diesel 

Engine 

Nova (1 5L) Incl Diesel & 

Novavan 

1991-1992 

1992-1995 

1989-1992 

20002270 Kadett (1 5L) 1989 

PeugeOt 

20006783 4007 2007-2009 

PONtiac 

20002282 Vibe 2003-2009 

SciON 

20002282 Tc (2 4L) 2007-2009 

Subaru 

20002278 Impreza WRX STi 2008-2010 

20002278 Impreza WRX 2008-2010 

20002278 Impreza 2 5L 2008-2009 

20002278 Impreza 2 0L 2008-2009 

20002270 Impreza WRX STi 1997-2007 

20002270 Impreza WRX 1993-2007 

20002270 Impreza 1993-2007 

20002278 Legacy (2 5L/3 0L/GT) 2005-2009 

20002278 

20002270 

Legacy B4 (2 0/2 5/3 0L) 

JDM 

Legacy B4 (2 0/2 5/3 0L) 

JDM 

2003-2008 

1998-2005 

20002270 Legacy (1 8/2 0/2 5L/3 0L) 1989-2003 

20002278 Forester (2 0L/2 5L) 2008-2009 

20002278 Outback (2 0/2 5/3 0L) 2005-2009 

20002278 Tribeca (3 0/3 6L) 2006-2008 

20002279 Tribeca (3 0/3 6L) 2006-2009 

20002270 Alcione Svx (3 3L) JDM 1991-1996 

20002278 Exiga (2 0L) JDM 2006-2008 

tOyOta 

20002281 Rav4 (2 2L) Diesel 2006-2010 

20002282 Corolla T Sport 2002 

20002282 Corolla (1 4/1 6/1 8L) 2002-2009 

20002282 Matrix Xrs/Xr (1 8L) 2003-2009 

20002282 Avensis (1 6/1 8/2 0/2 4L) 2003-2007 

20002282 Altis (1 6/1 8/2 0L) 2001 

20002270 Lexcen (3 8L) 1989-1997 

20002282 Premio JDM 2001-2007 

20002282 Noah JDM 2001-2008 

20002282 Opa JDM 2000-2008 

20002282 Isis JDM 2004-2008 

20002282 Allion JDM 2001-2007 

20002282 Ipsum JDM 2001-2008 

20002282 Wish JDM 2003-2008 

20002282 Voxy JDM 2001-2007 

20002282 Volt JDM 2008-2009 

20002282 Caldina (Non-Turbo) JDM 2002-2008 

31

Brake Pads 

The racing performance pedigree that 

is so much part of Cosworth’s heritage, 

is clearly demonstrated in this exciting 

addition of brake pads to our Aftermarket 

Performance Parts range. 

With two grades of friction material, the 

StreetMaster and TrackMaster ranges 

deliver exceptional levels of stopping power 

specifically tailored for fast road and track 

applications respectively. 

Manufactured in the United Kingdom, 

Cosworth brake pads feature a 1.5mm 

granulated interlayer which not only serves 

to act as a shock absorber, helping to 

reduce stress on the rotor surface but 

triples bonding strength so diminishing 

edge lifting. 

To reduce the “bedding-in” or “seatingin” 

time - this is the time it takes for the 

pad and disc to adapt to each other - all 

Cosworth brake pads are heat seared. 

This process heats the friction material 

to in excess of 600°C “toasting” the 

surface greatly enhancing the performance 

the first time that the driver applies the 

brakes. Scorching pads also significantly 

reduces initial fading. Fading increases the 

necessary force and pressure required to 

maintain the deceleration of the vehicle. 

Cosworth’s brake pads range offer 

exceptional performance with no 

compromise. 

Why choose Cosworth Brake Pads? 

■ Heat seared for reduced “bedding-in” 

time 

■ Superior bite from cold 

■ Exceptional stopping performance - 0.7µ 

braking coefficient 

■ Silent running technology 

■ “Vee” groove for fast debris clearance 

■ Fade resistant 

■ Premium grade friction material 

■ Consistent & predictable braking 

patterns 

32 

■ Medium-hard sports pad suitable for 

heavy duty/fast road 

■ ECE R90 approval 

■ Superior bite - 0.5µ friction coefficient - 

virtually from first pedal 

■ Strong brake effect up to 650°C 

■ Chamfered edge – avoid lifting 

■ Fitted with premium quality shim 

hardware - silent braking technology 

■ Durability factor 6.5 with rotor minimal 

disc abrasion 

■ Produces consistent, predictable braking 

performance 

■ Track day driving 

■ Extremely high friction level 0.7µ friction 

coefficient 

■ Strong brake effect through 800°C 

■ “Vee” line expansion groove technology - 

superb debris clearance 

■ Fitted with premium quality shim 

hardware - silent braking technology 

■ Durability Factor 9.5 with minimal disc 

abrasion 

■ Super fast “bed-in” typically under 2 laps 

■ Heat stable, predictable & heat cycle 

exceptionally well 

■ This track formulation CAN be safely 

used on highways except in Europe 

where ECE R90 approvals are required. 

This pad has too much brake effect to 

be compliant with these regulations.

Model year 

Vehicle Application List 

StreetMaster 

front Pads 

trackMaster 

front Pads 

StreetMaster 

rear Pads 

Fiesta 2 0 ST 2004-2008 CFS3011 CFS3005 

Escort/Orion 2 0 Cosworth 92-95 CFS3024 CFS3021 

Focus 2 5 Turbo ST 2005-2009 CFS3010 CFS3013 

Focus 2 5 Turbo RS 2009- CFS3020 CFS3017 

Sierra/Sapphire 2 0 Cosworth 85-90 CFS3022 CFS3021 

Sierra/Sapphire 2 0 Cosworth 4x4 90-93 CFS3024 CFS3021 

fOrD 

hONDa 

trackMaster 

rear Pads 

S2000 2 0 99- CFS3006 CFT3006 CFS3002 CFT3002 

Civic 2 0 Type-R (EP3) 2001-2007 CFS3006 CFT3006 CFS3002 CFT3002 

Civic 2 0 Type-R (FN2) 2007- CFS3006 CFT3006 CFS3016 CFT3016 

Integra (Not UK) 2 0 Type R (DC5) 2001- CFS3012 CFT3012 CFS3002 CFT3002 

Integra (Not UK) 2 0 Type S (DC5) 2004- CFS3006 CFT3006 CFS3002 CFT3002 

MX5 1 8 2006- CFS3014 CFS3015 

MX5 2 0 2006- CFS3014 CFS3015 

MazDa 

MitSubiShi 

Lancer Evo 5 2 0 Turbo GSR 97-99 CFS3004 CFT3004 CFS3009 CFT3009 

Lancer Evo 6 2 0 Turbo 98-2001 CFS3004 CFT3004 CFS3009 CFT3009 




Lancer Evo 10 2 0 Turbo 2008- CFS3004 CFT3004 CFS3019 CFT3019 

GT-R (R35) 3 8 Twin Turbo 2008- CFS3018 CFT3018 CFS3001 CFT3001 

Skyline R32 GTR 89-95 CFS3003 CFT3003 CFS3023 CFT3023 

Skyline R33 GTS 2 5 Turbo 93-98 CFS3003 CFT3003 CFS3023 CFT3023 

Skyline R34 GTT 97-2002 CFS3003 CFT3003 CFS3023 CFT3023 

Skyline 3 5 (V35 V36) (Brembo) 2001-2006 CFS3012 CFT3012 CFS3008 CFT3008 

350Z 3 5 (Brembo) 2003- CFS3012 CFT3012 CFS3008 CFT3008 

Impreza 2 0 Turbo (Not UK) 98-2002 CFS3003 CFT3003 CFS3023 CFT3023 

NiSSaN 

Subaru 

Impreza 2 0 Turbo (UK) 98-2002 CFS3003 CFT3003 CFS3007 

Impreza 2 0 Turbo P1 2000-2002 CFS3003 CFT3003 CFS3007 

Impreza 2 0 Turbo WRX 2001-2005 CFS3003 CFT3003 CFS3023 CFT3023 

Impreza 2 2 Turbo (22B) 98-2000 CFS3003 CFT3003 CFS3023 CFT3023 

Impreza 2 5 Turbo WRX 2006-2007 CFS3003 CFT3003 CFS3023 CFT3023 

Impreza 2 0 Turbo WRX STi 2002-2005 CFS3004 CFT3004 CFS3008 CFT3008 

Impreza 2 5 Turbo WRX STi 2006-2007 CFS3004 CFT3004 CFS3008 CFT3008 

Impreza 2 5 Turbo WRX STi 2007- CFS3004 CFT3004 CFS3008 CFT3008 

Toyota Supra 3 0ltr Twin Turbo 17" wheel 93 - 2002 CFS3025 CFT3025 CFS3026 CFT3026 

tOyOta 

See next page for brake pad applications to fit AP Racing callipers 

33

Cosworth Brake Pads to Fit AP Racing Calipers 

Model year Position caliper type aPr caliper ref 

fOrD 

cosworth SKu 

StreetMaster 

cosworth SKu 

trackMaster 

Civic Type R 2002 -2006 Front 4 Piston CP5200 CFSA001 CFTA001 

Civic Type R 2002 -2006 Front 6 Piston CP5570 CFSA002 CFTA002 

Civic Type R 2007 on Front 4 Piston CP6637 CFSA005 CFTA005 

S2000 1999 on Front 4 Piston CP6637 CFSA005 CFTA005 

Evo 7 - 8 & 9 2001 on Front 6 Piston CP7040 CFSA003 CFTA003 




350Z 2005 on Front 6 Piston CP7040 CFSA003 CFTA003 

GTR32 1992 on Front 4 Piston CP5200 CFSA001 CFTA001 



WRX,STI 2001 - 2007 Front 4 Piston CP5200 CFSA004 CFTA004 



WRX,STI 2008- Front 6 Piston CP7048 CFSA006 CFTA006 

Escort Cosworth 1991 on Front 6 Piston CP5570 CFSA002 CFTA002 

Escort Cosworth 1991 on Front 4 Piston CP5200 CFSA001 CFTA001 

Sierra Cosworth 1987 on Front 4 Piston CP5200 CFSA001 CFTA001 

Sierra Sapphire Cosworth 4x4 1990 on Front 4 Piston CP5200 CFSA001 CFTA001 

Fiesta ST 2005 Front 4 Piston CP6637 CFSA005 CFTA005 

Focus RS 2002 on Front 6 Piston CP7040 CFSA003 CFTA003 

Focus ST170 2001 on Front 4 Piston CP5200 CFSA001 CFTA001 

The Cosworth brake pad range is constantly expanding and a full list of applications can be found at www.cosworth.com, 

Performance Tuning Components section 

34

Big Brake Upgrade Kits 

Cosworth has combined over 50 years of 

motorsport heritage and technology with 

the unrivalled experience of AP Racing 

to develop a range of joint branded high 

performance Big Brake Upgrade kits. 

The Cosworth AP Racing brake kit delivers 

ultimate stopping power consistently and 

quickly from cold whilst offering corner 

weight reduction over the OEM brakes of 

1.58Kg. 

The Cosworth BBK calipers are 6 piston, 

with differential bores to eliminate “pad 

taper”. The trailing pistons have a larger 

bore than the leading ones to compensate 

for mechanical end load & to even out the 

wear on the pads. All our performance 

brake calipers use conventional seals 

in conjunction with a dirt seal and are 

finished with an eye-catching high gloss 

black PTFE based paint coating which is 

impervious to normal brake fluids & high 

brake temperatures. 

The 2-piece discs features Cosworth 

technology embedded within the pair of 48 

vaned discs together with lightweight high 

grade aluminium mounting bells designed 

to deliver enhanced airflow than the original 

brakes. The discs have been developed to 

produce optimum braking bite, as well as 

thermal stability and durability. 

The upgrade kits also contain a set of 

high performance brake pads, mounting 

brackets individually designed for each 

application, brake hoses, a complete set 

of fixings and two bottles of AP Racing 

Formula DOT 5.1 brake and clutch fluid. 

Cosworth Big Brake Upgrade Kits are a 

stylish and effective way of up-rating your 

cars braking performance. 

Detailed Specification: 

■ 2 x Ø355 x 32mm 2 piece brake discs 

■ 2 x 6 piston brake calipers 

■ High performance brake pad friction 

material* 

■ Braided brake hoses 

■ 2 x Dot 5.1 high temperature brake fluid 

■ 2 x Mounting brackets 

■ 2 x Aluminium mounting bells 

■ Steel braided hoses 

■ Fixings 

*Braking material is not R90 approved for road use 

Big Brake Upgrade Kits 


20017603 Subaru 2008 on (to fit 17 and 18 inch wheels) 

CBK3002 EVO X (to fit 17 and 18 inch wheels) 

CBK3003 350z (to fit 17 and 18 inch wheels) 

35

Fuel 

Mitsubishi EVO X High Volume Fuel 

Rail System - 20005241 

The Cosworth High Volume Fuel Kit 

features a machined from solid, hard 

anodised aluminium fuel rail with o-ringed 

fittings and a pre-shaped inlet pipe. The 

Cosworth High Volume Fuel Rail Kit can be 

used with original or various aftermarket 

injectors and PRV’s. 

■ Direct fit replacement- includes all 

necessary components for a complete 

bolt-on installation 

■ Designed with expansion in mind, 

facilitating installation of custom fuel 

systems including AN fuel lines and 

remote mounted fuel pressure regulators 

■ Full-flow ½” bore will support upwards of 

600hp worth of fuelling 

■ Hard anodised finish is methanol 

compatible. 

(upgraded fittings and seals required) 

Nissan VQ35 High Volume Fuel Rail 

System - KK3905 

The original factory VQ35DE fuel rail 

arrangement is limited in performance. 

The Cosworth VQ35 High Volume Fuel 

System features high volume anodised 

fuel rails, with o-ringed fittings and is fully 

configurable for various applications. Each 

system includes sleeved high pressure 

fuel lines along with a CNC machined 

distribution block that includes an 

additional port for various sensors. The 

Cosworth High Volume Fuel Rail System 

can be used with original or various 

aftermarket injectors. 

36 

Fuel 


NiSSaN 

KK3905 Nissan VQ35DE (3 5L) High Volume Fuel rail system 

20005241 Mitsubishi EVO X High Volume Fuel rail kit 

MitSubiShi 

Mitsubishi Evo Fuel Rail System 

VQ35 Fuel Rail System

Oil Control 

Subaru Dry Sump - 20004463 

The Cosworth Dry Sump Setup Kit for the 

Subaru EJ series engine is a must for race 

and performance applications. Dry sump 

oiling systems offer an unparalleled level of 

safety and reliability compared to factory 

wet sump systems. Complete crankcase 

oil scavenging reduces excessive and 

residual oil that can cause blow-by and 

power loss. A dry sump also offers more 

consistent oil pressure to the engine, 

Includes: 

■ Machined from Solid Sump 

■ 2-Stage Scavenge Pump 

■ Pump Mounting Bracket/Manifold 

■ 34T Pump Drive Pulley 

■ Crankshaft Drive Adapter Assembly 

■ HTD Drive Belt 

■ Crankcase Breather Filter and Fitting 

■ Fittings and Hardware 

Required to complete the installation: 

■ Oil Tank 

■ Hoses/Hose Ends 

■ 2004-2007 Subaru STI Alternator 

Bracket 

■ Cosworth High Volume/Pressure Oil 

Pump 20001185 

improved scavenging, and increased 

ring seal due to greater pan vacuum. 

The Cosworth Dry Sump System for the 

Subaru EJ20/EJ25 replaces the original 

oil sump with a machined from solid, low 

profile alloy pan with twin scavenge ports, 

internal baffling and o-ring sealing. A two 

stage scavenge pump driven by a HTD 

belt, mounted to a heavy duty bracket 

evacuates the oil from the engine. 

Low profile design 

Heavy duty mounting bracket / pump manifold 

Internal baffling 

Twin Scavenge Ports 

37

High performance engines reject a 

substantial amount of heat through the 

oil system. Maintaining oil pressure and 

control along with an increase in actual 

volume will help dissipate heat and stabilise 

oil temperatures. Cosworth oil control 

components are engineered to combat 

several problem areas experienced in high 

performance engines. 

Mitsubishi 4G63 Crankscraper 

The Cosworth 4G63 Crankscraper is 

engineered to reduce parasitic drag on the 

crankshaft caused by oil accumulation that 

surrounds the crankshaft during rotation. 

This oil buildup causes additional drag and 

can reduce power output. Additionally, 

overall oil control is improved by keeping 

oil in the sump. Especially useful in high 

rpm and race applications. Mounts to main 

bearing girdle. Designed from 2.6 mm 

(12gauge) steel plate and includes required 

mounting hardware. 

Subaru Oil Pan Baffle 

Oil control can be a problem with high 

performance and high revving Subaru 

engines. High crankcase pressure along 

with the horizontal engine platform restricts 

rapid oil return from the cylinder heads to 

the oil pan. Pressure builds in the heads 

and crankcase causing massive blow by 

and power loss. The Cosworth Subaru 

Oil Pan Baffle has been engineered with 

diverters to control oil returning from the 

cylinder heads to the pan directing it away 

from the crankshaft. Additionally, oneway 

valves prevent oil from re-entering the 

upper crankcase chamber thereby limiting 

blow by and preventing oil starvation during 

hard driving. Manufactured from stainless 

steel and installs easily between the block 

and oil pan on both EJ20/EJ25 series 

engines. Use with our High Volume Oil Pan 

for maximum oil control. 

38 

Oil Control 

Part No. application 

20001238 Subaru (EJ20/EJ25) High Volume Oil Pan 

20002499 Subaru (EJ20/EJ25) Oil Control Baffle 

Subaru 

KK3928 Subaru (EJ20/EJ25) Blueprinted Oil Pump with high pressure mod & install kit 

20001185 Subaru (EJ20/EJ25) High Volume/Pressure Blueprinted Oil Pump & install kit 

20009093 Subaru 2008+ STI (EJ25) Blueprinted Oil Pump with high pressure mod & install kit 

20004463 

Dry Sump Kit, Subaru EJ (Includes pan, 2 stage scav pump, brackets and pump drive-fluid lines / tank are not 

included) 

20009175 Nissan (VQ35) High Pressure Oil Pump Kit 

20008841 Nissan (VQ35) Oil Control Baffle 

NiSSaN 

20008632 Nissan (VQ35) Oil Control Baffle 03-04 Install kit 

MitSubiShi 

20001382 Mitsubishi Evo VII-IX 4G63 (2 0L) Crankshaft Oil Scraper 

20007845 Mazda Miata NC Oil Cooler Kit 

Subaru Oil Control Baffle 

MazDa 

Nissan Oil Control Baffle 

The Cosworth Oil Control Baffle for the 

Nissan VQ35 has been engineered to stop 

oil from surging away from the oil pick 

up during hard driving conditions. The 

unique Cosworth one-way control valves 

allow oil to flow towards the pickup but 

restrict oil from migrating to the back of 

the sump during aggressive manoeuvres 

to help maintain constant oil pressure. 

Manufactured from stainless steel. 

Model Year 2003-2004 require fit kit PN 

20008632 for proper installation. 

Nissan Baffle Install Kit 

Nissan Oil Control Baffle

Subaru EJ20/25 High Volume Oil Pan - 

20001238 

Sustained high RPM or prolonged high 

speed driving will result in elevated oil 

temperatures. Additional oil volume along 

with improved oil control will reduce 

damaging oil temperatures. The Cosworth 

EJ20/EJ25 High Volume Oil Pan is 

fabricated from both custom and original 

components resulting in an additional 2qts 

oil capacity when compared to standard 

oil pan. Each kit includes powder coated 

oil pan, mounting hardware, oil pickup and 

spacer. Will not work with some equal 

length exhaust manifolds. 

Subaru EJ20/25 Oil pump - High Volume, High Pressure - 20001185 

Increasing oil volume will help to prevent 

bearing damage and engine failure. 

Additionally, sustained high RPM use may 

cause oil starvation at the rod and main 

Subaru EJ20/25 Oil pump - High Pressure - KK3928 

High performance engines require 

additional oil pressure because of the 

increased demand placed upon various 

components within the engine. The 

Cosworth High Pressure Subaru EJ20/ 

EJ25 series oil pump is modified to 

Oil pump - 20009093 

High performance engines require 

additional oil pressure because of the 

increased demand placed upon various 

components within the engine. 

The Cosworth High Pressure Oil Pump 

for the Subaru 2008 and newer STI is 

modified to increase oil pressure helping to 

ensure superior lubrication. 

Each pump is carefully inspected and deburred 

for unobstructed oil flow. 

bearings. The Cosworth High Volume 

Subaru EJ20/EJ25 series oil pump 

utilizes a completely new inner and outer 

12mm rotor to increase volume by 20%. 

Pump Gear: 10mm vs 12mm 

increase oil pressure helping to ensure 

superior lubrication. Each pump is carefully 

inspected and de-burred for unobstructed 

oil flow. Perfect for high performance 

daily use. Each kit includes all required 

mounting hardware and seals. 

Perfect for high performance daily and 

track use. Each kit includes all required 

mounting hardware and seals for quick and 

easy installation. 

Features: 

■ 11mm oil pump gears 

■ Essential for sustained high rpm 

applications 

■ Installation kit included 

■ Maintain superior lubrication 

Suggested applications include drag, track 

day and race use. Each kit includes all 

required mounting hardware and seals. 

39

High Performance Valve Train 

High Performance Valves 

Large diameter valves are essential 

for improved air flow. Cosworth high 

performance intake valves are produced 

from high quality stainless steel for 

maximum durability. Exhaust valves 

are machined from Inconel for high 

temperature (2400° F) reliability. Each valve 

features a swirl polished back for improved 

air flow and dished face for additional 

weight reduction. Some Cosworth High 

Performance Valves are only compatible 

with Cosworth Ultra Race Valve Spring 

Kits. Please confirm application before 

ordering. 

Valve Train Specification (L1=Install Height, F1=Force @ L1, L2=Max Lift, F2=Force @ Max Lift) 

Part No. application free height l1 mm f1 N f1 lbs l2 mm f2 N f2 lbs Max lift coil bind 

20000164 Mitsubishi EVO 7-9 47 00 38 1 381 85 26 1 900 202 12 0 24 3 

KK3813 Mitsubishi EVO 7-9 50 00 38 1 512 115 26 9 1268 285 12 0 25 7 

20000169 Nissan RB26 49 30 41 9 359 81 29 9 941 212 12 0 28 4 

20000168 Nissan SR20 46 00 39 0 365 82 27 5 964 217 11 5 25 4 

20000163 Nissan VQ35DE 46 00 38 0 289 65 24 5 775 175 13 5 22 9 

20002550 Nissan VQ35DE 47 00 38 0 378 85 23 9 1183 266 14 1 22 6 

20000166 Subaru EJ 2 0/2 5 42 00 36 0 275 62 25 0 780 175 11 0 23 2 

KK3839 Subaru EJ 2 0/2 5 46 10 36 0 356 80 22 1 1019 229 13 9 20 8 

Note: Cosworth Subaru valves require Cosworth retainer kits. 

We recommend Cosworth retainers with all other valves. 

40 

High Performance Valve Train 


Subaru 

SB0034 Valve, Inlet +1 0mm Subaru EJ25-Stainless Steel (37 0mm) 

SB0033 Valve, EX +1 0mm Subaru EJ25-Inconel (33 0mm) 

PR7710 Subaru EJ25 (2 5L) Graded Cam bucket 4 50 






















NiSSaN 

PR7602 Valve, Inlet +1 0mm Nissan VQ35-Stainless Steel (38 15mm) 

PR7603 Valve, Ex +1 0mm Nissan VQ35-Inconel (32 35mm) 

MitSubiShi 

CI0113 Valve, Inlet +1 0mm Mitsubishi 4G63 Stainless Steel (35 0mm) 

CI0112 Valve, Ex +1 0mm Mitsubishi 4G63-Inconel (31 5mm) 

20007107 Valve, Inlet +1 0mm Mitsubishi 4B11T Stainless Steel (36 0mm) 

20007082 Valve, Ex +1 0mm Mitsubishi 4B11T-Inconel (30 0mm) 

All dimensions are in millimetres unless otherwise specified

High RPM Valve Springs 

Cosworth High RPM Valve Springs are the 

result of countless hours of engineering, 

testing and validation ensuring the best 

possible spring for high performance 

applications. Cosworth High RPM Valve 

Springs are wound from the world’s finest 

Japanese Kobe steel and feature dual 

chamfered ends to reduce wear on seats 

and retainers. Each spring has been 

engineered with increased seat pressure 

along with higher lift capability for optimum 

performance potential and improved valve 

control. Single spring design allows easy 

installation with no machining required and 

is perfect for typical high performance use. 

■ Manufactured from the finest Japanese 

Kobe steel 

■ Single spring design for easy installation 

■ Dual chamfered ends 

■ Increased performance 

Ultra Race Valve Spring Kits 

Cosworth Ultra Race Valve Spring Kits 

are engineered for use in situations that 

require valve control in extreme conditions. 

Each kit consists of dual valve springs with 

matched lightweight titanium retainers, 

keepers, and hardened steel spring seats. 

Cosworth Ultra Race Valve Springs are 


Nissan VQ35DE 

Mitsubishi 4G63 Subaru EJ20/EJ25 

High RPM Valve Spring Sets 


MitSubiShi 

20000164 High RPM Single Valve Spring set (16) Mitsubishi Evo VII-IX 4G63 

20004844 High RPM Single Valve Spring set (16) Mitsubishi Evo X 4B11T 

Subaru 

20000166 High RPM Single Valve Spring set (16) Subaru WRX STI EJ25 (2 5L) EJ20 (2 0L) 

NiSSaN 

20000163 High RPM Single Valve Spring set (24) Nissan VQ35 (3 5L) 

20000168 High RPM Single Valve Spring set (16) Nissan SR20DET (2 0L) 

20000169 High RPM Single Valve Spring set (24) Nissan RB26 (2 6L) 

Ultra-High RPM Valve Spring Sets 


KK3813 Mitsubishi Evo 4G63 (2 0L) Ultra-High RPM Dual Valve Spring / Titanium Retainer set 

KK3839 Subaru EJ25 STI (2 5L) Ultra-High RPM Dual Valve Spring / Titanium Retainer set 

20002550 Nissan VQ35 (3 5L) Ultra-High RPM Dual Valve Spring / Titanium Retainer set 

20007182 Mitsubishi Evo 4B11T Ultra-High RPM Dual Valve Spring / Titanium Retainer set 

wound from the highest quality chrome 

silicone steel with chamfered ends and are 

heat treated and stress relieved for long 

term reliability. Ultra Race Valve Spring 

kits are compatible with Cosworth high 

performance valves. 

Install Height 

“F1” 

*Seal clearance 

41

High Performance Head Gaskets 

Cosworth High Performance Head Gaskets 

are engineered to seal in power under the 

most demanding conditions. Constructed 

from stainless steel with a folded stopper 

layer, each application features superior 

sealing compared to conventional multilayer 

steel gaskets. Additionally, Cosworth 

High Performance Head Gaskets are 

manufactured from pre-coated die cut 

stainless steel resulting in uniform coating 

distribution and consistent shape. 

Each gasket is carefully engineered with 

the following features: 

■ Individual die cut layers of stainless steel 

with superior consistency compared to 

laser cut gaskets 

■ Pre-coated stainless steel with a 0.25 

micron layer of nitrile rubber ensures 

consistent distribution of coating with no 

high or low areas 

■ Manufacturing dimensional tolerance of 

+/- 0.001” 

■ Die cut manufacturing process ensures 

smooth edges, unlike laser cut gaskets 

■ Cosworth gaskets feature a “folded 

stopper” layer for additional clamping 

force around each cylinder. The width 

of sealing area is specific for each 

application thereby providing ultimate 

sealing properties 

■ Available in a range of thicknesses for 

specific applications 

Folded 

Stopper Layer 

42 

Gasket Layer 

Gasket Layer 

High Performance Head Gaskets 


NiSSaN 

20013292 Nissan GTR VR38DETT (3 8L) Bore = 96mm T ~ 0 8mm (Pr) 

20004667 Nissan VQ35HR / VQ37VHR Bore = 96mm T ~ 0 6mm (Pr) 

20000900 Nissan VQ35DE (3 5L) Bore = 96mm T ~ 0 6mm (Pr) 



20000924 Nissan SR20DET (2 0L) Bore = 87mm T ~ 1 1mm 





20000927 Nissan RB26DETT (2 6L) Bore = 87mm T ~ 1 1mm 



20000930 Nissan RB25DET (2 5L) Bore = 87mm T ~ 1 1mm 

20000931 Nissan RB25DET (2 5L) Bore = 87mm T ~ 1 5mm 

MitSubiShi 

20001689 Mitsubishi Evo IX 4G63 (2 0L) Bore = 86mm T ~ 1 3mm 

20001690 Mitsubishi Evo IX 4G63 (2 0L) Bore = 86mm T ~ 1 5mm 

20000909 Mitsubishi Evo IV-VIII 4G63 (2 0L) Bore = 86mm T ~ 1 3mm 

20000910 Mitsubishi Evo IV-VIII 4G63 (2 0L) Bore = 86mm T ~ 1 5mm 

20004122 Mitsubishi Evo X 4B11T (2 0L) Bore = 87mm T ~ 1 1mm 

20004123 Mitsubishi Evo X 4B11T (2 0L) Bore = 87mm T ~ 1 3mm 

Subaru 

20000913 Subaru WRX STI EJ25 (2 5L) Bore = 101mm T ~ 0 78mm each 



20010706 2008+ Subaru WRX STI EJ25 (2 5L) Bore = 101mm T ~ 0 78mm each 



20000919 Subaru WRX EJ20 (2 0L) Bore = 93mm T ~ 0 78mm each 

20000922 Subaru WRX EJ20 (2 0L) Bore = 93mm T ~ 1 1mm each 

hONDa 

20010904 Honda S2000 F20/22C Bore = 88mm, T ~ 0 38mm 




20003127 Honda K20/24 Bore = 87mm T ~ 0 8mm for use with RAA, RAC, RBB, and RBC cylinder heads 



20010903 Honda K20/24 Bore = 87mm T ~ 0 38mm for use with PRB, PNC, and PPA cylinder heads 




TBA Toyota 2JZ - GTE Bore = 87mm T ~ 1 1mm 



tOyOta

Folded stopper layer provides complete sealing 

around entire combustion chamber 

Honda F20C 


Mitsubishi 4b11t 

Subaru EJ25 

Without folded stopper layer, clamping force is 

limited resulting in incomplete sealing around 

combustion chamber 

Uniform nitrile rubber coating 

Nissan VQ35DE 

Die cut edges 

Stopper sealing layer 

43

Thermal Composite Gaskets 

The Cosworth Thermal Guard Composite 

Intake Gasket is designed to aid in the 

reduction of inlet air temperature by 

isolating the intake manifold from the heat 

generated by the engine’s cylinder head. 

By reducing the temperature of the inlet 

manifold the temperature of the intake air 

charge is also reduced. The density of 

cooler air is greater than that of warm air. 

A denser intake air charge contains more 

oxygen which results in the potential for 

increased power and torque. 

Each Cosworth Thermal Guard Composite 

Intake Gasket is precision manufactured 

from an engineering grade composite 

phenolic material that resists deformation 

common with plastic gaskets. As an 

added feature Cosworth Thermal Guard 

Composite Intake Gaskets are reusable 

and include a tube of “Hylomar Universal 

Blue Racing Formula” sealant. The use of 

OE inlet manifold gaskets is not required 

with the Cosworth Thermal Guard 

Composite Intake Gasket. 

44 

Thermal Composite Gaskets 


20013283 Thermal Intake Manifold Gasket - EJ25 2004+ all (Pair) 

20013286 Thermal Intake Manifold Gasket - 4G63 EVO 4-9 

20013287 Thermal Intake Manifold Gasket - 4B11T EVO X 

20013288 Thermal Intake Manifold Gasket - 2ZZ-GE 

20013289 Thermal Plenum Gasket - VQ35DE 

20013290 Thermal Plenum Gasket - VR38DETT 

■ Isolates inlet manifold from engine and 

cylinder head 

■ Reduces inlet air temperature 

■ Reusable with no deformation 

■ Higher temperature resistance than 

plastic gaskets (+500º F) 

■ Precision CNC manufactured 

■ Includes Hylomar Universal Blue Racing 

Formula sealant 

■ Race proven 

■ Safe with all fuel types 

Nissan VQ35 



Subaru EJ25

Cosworth Rhino Skin - Thermal Heat Protection 

Cosworth Rhino Skin is a simple yet 

highly effective way of restraining heat 

from penetrating and destroying thermally 

sensitive areas of the engine bay - a 

re-occurring challenge for fast road and 

motorsport vehicles. 

Cosworth Rhino Skin heat protection uses 

leading thermal protection technology to 

restrain heat to the area of generation. 

Each application is individually developed 

by Cosworth so there is no trim to fit and 

making for an easier installation. 

Cosworth Rhino Skin has been initially 

developed as thermal protection for two 

key areas: turbochargers and exhaust 

manifolds where temperatures typically 

exceed 900°C/1650°F, making the need 

for predictable, rugged and reliable thermal 

armour a real one. 

Cosworth Rhino skins are designed for 

street performance to hardcore motorsport 

applications. Branded in Cosworth 

image, each skin has a Teflon style 

surface effectively repelling grease and 

dirt they are capable of withstanding upto 

1250°C/1800°F continuously. 

Wrapping the exhaust header with Rhino 

Skin maintains hotter exhaust gases, 

decreases the density, and allows the 

Cosworth Rhino Skin – Thermal Heat Protection 


20019507 Subaru EJ25 STi 2008 - exhaust manifold heat shield 

20019574 Subaru EJ25 STi 2008 - Up-pipe heat shield 

20019952 Subaru EJ25 STi 2008 - Down-pipe heat shield 

CRS003 Subaru EJ20 STi ‘98 - exhaust manifold heat shield 

CRS004 Nissan SR20DET exhaust manifold (low mount) heat shield 

CRS005 Nissan RB25 exhaust manifold (low mount) heat shield 

CRS006 Nissan RB26 exhaust manifold (top mount) heat shield 

CRS006 Mitsubishi 4G63 exhaust manifold (low mount) heat shield 

CRS007 Mitsubishi 4B11T exhaust manifold (low mount) heat shield 

CRS008 Honda K20A EP3 exhaust manifold heat shield 

exhaust gas to accelerate from the system 

quicker. Thus, greater exhaust scavenging 

is produced lowering intake temperatures 

and in-turn contributing to an increase in 

power. 

Benefits to power are also demonstrated in 

vehicles like the Subaru Impreza where the 

intercooler sits on top of the engine, rather 

than down at the front by the radiator. The 

“Up-Pipe” that brings hot exhaust gases to 

power the turbo and the “Down-Pipe” that 

takes them away, are both located directly 

beneath the intercooler - clearly generating 

significant radiant heat, particularly when 

the car is stationary. 

To overcome this, a solution successfully 

developed and employed on the Cosworth 

Impreza CS400, was the Rhino Skin 

application – using the Rhino Skin to 

prevent the exhaust transferring heat to the 

intercooler, keeping the charge cool and 

improving the car’s performance and also 

increasing the engine’s responsiveness. 

From the turbo perspective, the benefit 

of the shield is that it stops the turbo 

cooling down too quickly, preventing rapid 

temperature change which can cause 

turbine damage. 

45

Miscellaneous 

Subaru Billet Timing Belt Guide - Part 

number SB0001 

The original sheet metal timing belt 

guide can flex from belt deflection when 

subjected to extreme RPM causing the 

timing belt to skip one or more teeth on 

the crankshaft sprocket. The Cosworth 

Billet Timing Belt Guide was developed to 

control this problem and is machined from 

solid aluminium with a hard anodised finish. 

Includes mounting hardware. 

Subaru Billet Cam Angle Sensor 

Bracket - Part number SB0002 

Used for mounting the cam angle sensor 

to the front of non North American Spec 

STI cylinder heads. Useful for adapting our 

cylinder heads to Japanese and European 

market engines. 

Air Pump Delete - Part number 

20004539 

Used to eliminate the air pump and related 

valves found on 2006-2008 Subaru 

Engines. Used for high performance 

applications or adapting later cylinder 

heads to early engines. Seals off the air 

injection ports at the cylinder heads. Saves 

weight, reduces complexity, cleans up 

engine compartment. Machined from solid 

aluminium with a “Cosworth blue” anodised 

finish. Mounting hardware included. 

46 

Miscellaneous 


SB0001 Subaru (EJ20/EJ25) Billet Timing Belt Guide 

Subaru 

SB0002 Subaru Billet Cam Angle Sensor Bracket (for mounting cam angle sensor on front of head) 

20004539 Subaru (EJ20/EJ25) Air pump delete plate set 

Oil Filler Caps 


20014944 Mitsubishi Evo X 4B11T Oil Filler Cap (Red) 

20015827 Mitsubishi Evo X 4B11T Oil Filler Cap (Natural) 

20014380 All Subaru vehicles from 1990 to current model years (Blue) 

Oil Filler Caps 

The Cosworth Oil Filler Cap is machined 

from solid aluminium with the traditional 

Cosworth “three prong” ergonomic style. 

This light weight oil filler cap includes a 

an oil ring sealing feature , preinstalled to 

ensure leak free operation on your engine. 

Each cap features a durable anodised 

finish. 

■ Machined from solid aluminium 

■ Durable anodised finish 

■ Includes pre-installed O-ring for leak free 

operation 

■ Ergonomic, Classic Cosworth three 

prong design

Disclaimer 

The products in this catalogue require professional installation to ensure correct operation. 

Cosworth will not accept responsibility for damage to vehicles as a result of improper 

installation of our products. 

The performance and power gained from installing products from this catalogue may place 

vehicles within an “off road use only” category in certain counties and states around the 

world. Cosworth will not accept responsibility for any restrictions placed on vehicles. 

Product Disclaimer: A vehicle modified with Cosworth competition and or racing 

performance products may not meet the legal requirements for operation on public roads 

and highways. It is the purchaser’s responsibility to check and comply with all local, state 

and federal laws prior to operating vehicle. Installation and use of performance products 

may also affect/ void vehicle warranty and insurance policy. 

Warranty: In general, Cosworth Performance Parts carry no warranty. Cosworth Ltd and 

Cosworth LLC shall not be liable for direct, indirect, incidental or consequential damage 

or injury to persons or property that might be claimed as a result from the installation, 

improper installation and failure of part including claims for delay, loss of profits or labour. 

There are no warranties expressed or implied. 

SOME PRODUCTS MAY NOT BE LEGAL FOR SALE OR USE ON POLLUTION 

CONTROLLED MOTOR VEHICLES OPERATING IN CERTAIN COUNTRIES 

INCLUDING THE US STATE OF CALIFORNIA.

European Office 

Cosworth Ltd 

The Octagon 

St James Mill Road 

Northampton 

NN5 5RA 

United Kingdom 

Tel: +44 (0)1604 598300 

Fax: +44 (0)1604 598301 

Email: clsales@cosworth com 

www.cosworth.com 

Performance tuning components 

US Office 

Cosworth LLC 

3031 Fujita Street 

Torrance 

CA 90505 

USA 

Tel: +1 310 534 1390 

Fax: +1 310 534 2631 

Email: sales@cosworth com 

© Copyright 2011, Cosworth (UK) - v3 0

Performance Tuning - Bressner Technology

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