2024 Catalog

ELECTRICAL/GAUGES
Autolite Spark Plugs
Heat Range Seat Reach Hex Tip Part #
Cold Tapered .460 5/8 Projected 027 AR12
Hot Tapered .460 5/8 Projected 027 AR13
Cold Flat 3/4 13/16 Projected 027 AR50
Flat 3/4 13/16 Projected 027 AR51
Hot Flat 3/4 13/16 Projected 027 AR53
Cold Tapered .708 5/8
Tapered .708 5/8
Hot Tapered .708 5/8 Projected 027 AR94
Cold Tapered .460 5/8 Standard 027 AR132
Tapered .460 5/8 Standard 027 AR133
Hot Tapered .460 5/8 Standard 027 AR135
Hot Flat 3/8 13/16 Standard 027 353
Cold Tapered .708 5/8 Standard 027 AR472
Hot Tapered .708 5/8 Standard 027 AR473
Cold Flat 3/4 5/8 Projected 027 AR3910
Hot Flat 3/4 5/8 Projected 027 AR3911
Cold Flat 3/4 5/8
Flat 3/4 5/8 Standard 027 AR3932
Flat 3/4 5/8 Standard 027 AR3933
Hot Flat 3/4 5/8 Standard 027 AR3934
Med Cold Flat 3/4 5/8 Special 027 AR3932X
Med Cold Flat 3/4 5/8 Special 027 AR3933X
Champion Spark Plugs
Heat Range Seat Reach Hex Tip Part #
Cold Flat 3/4 5/8 Cut Back 231 C53CX
Flat 3/4 5/8 Cut Back 231 C57CX
Hot Flat 3/4 5/8 Cut Back 231 C59CX
Cold Flat 3/4 5/8 Projected 231 C57YC
Flat 3/4 5/8 Projected 231 C59YC
Flat 3/4 5/8 Projected 231 C61YC
Hot Flat 3/4 5/8 Projected 231 C63YC
Medium - Hot 3/8 13/16 Standard 231 J4C
NGK Spark Plugs
Heat Range Seat Reach Hex Tip Part #
Cold Tapered .406 5/8 Standard 255 R5673-9
Tapered .406 5/8 Standard 255 R5673-8
Hot Tapered .406 5/8 Standard 255 R5673-7
Cold Tapered .406 5/8 Projected 255 R5674-9
Tapered .406 5/8 Projected 255 R5674-8
Tapered .406 5/8 Projected 255 R5674-7
Cold Tapered .708 5/8 Standard 255 R5724-9
Hot Tapered .708 5/8 Standard 255 R5724-8
Cold Flat 3/4 5/8 Standard 255 R5671A-10
Flat 3/4 5/8 Standard 255 R5671A-9
Flat 3/4 5/8 Standard 255 R5671A-8
Hot Flat 3/4 5/8 Standard 255 R5671A-7
Cold Flat 3/4 5/8 Projected 255 R5672A-10
Flat 3/4 5/8 Projected 255 R5672A-9
Hot Flat 3/4 5/8 Projected 255 R5672A-8
Manufacturing Co.
AR12 R5674-7 RV9YC
AR13 R5674-6 RV9YC
AR50 R5672A-10 N59YD
AR51 R5672A-9 N61YD
AR52 R5672A-8 N63YD
AR53 BP6ES N9YC
AR92 R5724-10 S57YC
AR93 R5724-9 S59YC
AR94 R5724-8 S61YC
AR132 R5673-9 V57C
AR133 R5673-8 V59C
Spark Plug Cross Reference Chart
NOTE: The RED product numbers are not
stocked at Port City Racing, but are listed to help
you choose the right plug for your needs
WARNING:
Cancer and Reproductive Harm
www.P65Warnings.ca.gov
AR135 R5673-7 V63C
353 NO CROSS NO CROSS
AR472 B9EFS S57C
AR473 B9EFS S59C
AR3910 R5672A-9 C59YC
AR3911 R567A-8 C61YC
AR3931 R5671A-11 C55C
AR3932 R5671A-10 C57CX
AR3933 R5671A-9 C59CX
AR3934 R5671A-8 C61CX
4051 NO CROSS NO CROSS
Autolite Spark Plugs - Sold as Each
• 14mm thread size
• If you’re unsure of the heat range you
need, a colder plug will eventually foul &
misfire, but will not damage the engine
• A plug that is too hot can cause pre-ignition
“X” Plugs
• 027 AR3932X the “x” Plug
is a Specially Machined
Four Corner Firing Surface
Gap Style Instead of the
Normal Single Electrode
• Cut Back Ground
Electrode, Copper Core
• Specs Are: 5/8” Hex, 3/4” Reach, 14mm Thread, Nickel
Plated Shell, Gasket Seat, Non-Resistor
Spark Plugs - Sold as Each
• 14mm thread size
• If you’re unsure of the heat range you
need, a colder plug will eventually foul and
misfire, but will not damage the engine
• A plug that is too hot can cause pre-ignition
Racing Class Spark Plugs - Sold as Each
• Non-Resistor racing plug, 14mm Thread size,
tapered seat, .708 reach,
• 5/8” hex, J-gap non-projected tip
• Colder heat range (57) helps
avoid pre-ignition
• Constructed with a nickel
shell for faster heat dissipation and copper
core center electrode enhances thermal capacity
V-Power RacingPlugs - Sold as Each
• 14mm thread size
• If you’re unsure of the heat
range you need, a colder plug
will eventually foul and misfire,
but will not damage the engine
• A plug that is too hot can cause pre‐ignition
NORMAL
Manufacturing Co.
Appearance: Grayish
tan to white color
800-472-2464
Spark Plugs
V-Power
Center
Electrode
027 AR3932X
Trivalent
Metal Plating
Plug Tips Tell the Story
Looking at spark plug firing tips can tell you if your engine has a problem
that needs correcting. Even though spark plugs are easily replaced,
inexpensive, and immediately improve engine performance, they are often
ignored until they cause serious performance problems. Bad plugs can
cause overheating, rough running, power loss and even engine failure.
Check your spark plugs frequently and use this information below to spot
common performance problems. Photos and info courtesy of Autolite ®
FUEL FOULED
Appearance: Firing tip is
damp with gasoline,fuel
odor on plug, insulator
is often tinted the
color of charcoal
DETONATION
Appearance: Insulator
is usually cracked,
chipped or broken,
ground electrode may
also exhibit damage
SUSTAINED
PRE-IGNITION
Appearance: Melted
center, & ground
electrodes, damaged
ceramic insulator tip
OIL FOULED
Appearance: Center
electrode, ground
electrode, and/or
ceramic insulator tip
are coated with a
black, oily substance
131
ENGINE FITTINGS FUEL/AIR
FILTERS
COOLING//
TANKS
DEGREASERS
& CLEANERS
ELECTRICAL/
GAUGES
DRIVELINE CHASSIS
CONSTRUCTION
BODY
COMPONENTS
TOOLS SAFETY STEERING FRONT
SUSPENSION
REAR
SUSPENSION
HUBS &
WHEELS
BRAKES