Spark Plugs
R43TS
AC Delco R43TS Classic Spark Plugs — Set of 8
THE original GM spark plug. If it came out of Detroit with a V8, it had R43TS plugs.
Ignition Hub
Ignition Parts for Spark Plug, Coil, Distributor, and Control Upgrades
Ignition parts cover the firing side of every gasoline engine: the spark plug that lights the mixture, the coil that drives it, the distributor that times it, the plug wires that carry it, and the control module that decides when to fire on a modern swap. This hub collects spark plugs (Autolite, NGK, Champion, and AC Delco copper, iridium, and racing plug sets) plus ignition control upgrades (MSD 6AL capacitive discharge boxes, Pertronix electronic point conversions, and Taylor Spiro-Pro plug wire sets). Start with whichever component is the weakest link on your specific build — copper versus iridium on a stock-to-mild SBC, a colder racing plug on boosted or nitrous motors, or a 530V capacitive discharge box when stock ignition runs out of voltage at high RPM. For the supporting builds, our fuel systems hub covers pumps and regulators, the ignition upgrades that add horsepower guide walks through coils, plugs, and timing tradeoffs, and the wheels & rims guide covers backspacing changes when the new plug wires force a different header routing.
Spark Plugs
AR3910X
Autolite AR3910X Racing Spark Plugs — Set of 8
Copper-core racing plugs. 14mm, 3/4" reach, gasket seat. Heat range 10. The OG muscle car plug.
Spark Plugs
C59CX
Champion C59CX Racing Spark Plugs — Set of 8
Copper-plus racing plug. Heat range 59. The Champion racing standard for domestic V8s.
Spark Plugs
R5671A-8
NGK R5671A-8 V-Power Racing Spark Plugs — Set of 8
The most popular racing plug on the planet. Heat range 8. 14mm, 3/4" reach. V-groove electrode.
Spark Plugs
41-993
AC Delco 41-993 Professional Iridium Spark Plugs — Set of 8
GM Professional-grade iridium. Fine-wire center electrode. 100,000-mile engineered life.
Spark Plugs
CR43TS
AC Delco CR43TS Rapidfire Platinum Spark Plugs — Set of 8
Platinum-tipped for 2x copper life. Same R43TS fitment. The upgrade for street builds that want more mileage.
Spark Plugs
R45TS
AC Delco R45TS Classic Spark Plugs — Set of 8
One step colder than the R43TS. For higher-performance SBC and BBC street builds.
Spark Plugs
3924
Autolite 3924 Copper Core Street Spark Plugs — Set of 8
Reliable copper-core street plug. 14mm, 3/4" reach. The correct plug for stock-to-mild SBC, BBC, and SBF rebuilds.
Spark Plugs
AR3911X
Autolite AR3911X Racing Spark Plugs Cold — Set of 8
One step colder than the AR3910X. Heat range 11. Built for boost, nitrous, and high-compression race motors.
Spark Plugs
XP5224
Autolite XP5224 Iridium XP Performance Spark Plugs — Set of 8
Fine-wire iridium for the daily-driven build. 0.6mm center electrode. Extended life, superior ignitability.
Spark Plugs
C57CX
Champion C57CX Racing Spark Plugs Cold — Set of 8
One step colder than the C59CX. For boost, nitrous, and high-compression race engines.
Spark Plugs
RC12YC
Champion RC12YC Copper Plus Resistor Spark Plugs — Set of 8
Resistor version of the RN12YC. Better EMI suppression for electronic ignition builds.
Spark Plugs
RN12YC
Champion RN12YC Copper Plus Street Spark Plugs — Set of 8
Classic copper-plus street plug. The one your dad put in every engine he touched.
Spark Plugs
BKR5E-11
NGK BKR5E-11 V-Power Street Spark Plugs — Set of 8
V-groove copper street plug. The reliable daily-driver choice for stock and mild builds.
Spark Plugs
R5671A-9
NGK R5671A-9 V-Power Racing Spark Plugs Cold — Set of 8
One step colder than the R5671A-8. Heat range 9. The forced induction and nitrous racing plug.
Spark Plugs
TR55IX
NGK TR55IX Iridium IX Performance Spark Plugs — Set of 8
Iridium fine-wire performance plug. 0.6mm center electrode. 6x harder than platinum. Extended life.
Distributors
IGN-DIST-001
Rebuilt HEI Distributor — Small Block Chevy 350
Complete rebuilt HEI distributor for SBC 283–400. 65,000-volt module, magnetic pickup, adjustable mechanical advance. Drop-in for all Gen I small blocks.
Distributors
IGN-DIST-002
Rebuilt HEI Distributor — Big Block Chevy 454
Complete rebuilt HEI distributor for BBC 396–502. 65,000-volt module, magnetic pickup, adjustable advance. Fits all Mark IV and Gen V big blocks.
Coils & Packs
IGN-COIL-001
MSD Blaster 2 Ignition Coil
45,000-volt output coil for points, HEI, and MSD ignitions. Epoxy-filled canister. The most popular performance replacement coil on the market.
Coils & Packs
IGN-COIL-002
MSD Blaster SS Coil — High Output for CD Ignitions
50,000-volt secondary output coil for MSD 6AL and capacitive discharge systems. 530V primary capable. Oil-filled for maximum output under sustained use.
Plug Wires
IGN-PW-001
Taylor Spiro-Pro 8mm Plug Wire Set — SBC 350
Spiro-wound 8mm plug wires for SBC 283–400. 300 Ohm/ft suppression, HEI distributor boots, 90-degree plug boots for header clearance. Made in the USA.
Plug Wires
IGN-PW-002
Taylor Spiro-Pro 8mm Plug Wire Set — BBC 454
Spiro-wound 8mm plug wires for BBC 396–502. Longer lengths for the wider BBC engine bay. HEI boots, 90-degree plug ends, 500°F heat rating.
Plug Wires
IGN-PW-003
Taylor Spiro-Pro 8mm Plug Wire Set — Ford SBF 302/351W
Spiro-wound 8mm plug wires for Ford SBF 289, 302, and 351W. HEI-style and Duraspark distributor boots included. Header-friendly 90-degree plug ends.
Ignition Control
IGN-CTL-001
MSD 6AL-2 Ignition Control Box with 2-Step Rev Limiter
530V capacitive discharge box with built-in 2-step rev limiter and launch control. Compatible with points, HEI, magnetic, and hall-effect triggers. Multiple spark discharge up to 3,000 RPM.
Ignition Control
IGN-CTL-003
Holley High-Performance Points & Condenser Set — SBC/BBC Delco
Tungsten-tip points and condenser for Delco distributors. For period-correct restorations or anyone keeping a points ignition running correctly.
Ignition Control
IGN-CTL-002
Pertronix Ignitor II Electronic Conversion — SBC/BBC Delco
Drop-in solid-state points replacement for Delco distributors. Mounts inside the existing distributor cap — no external box, no modification. Restores precise timing without HEI conversion.