Accel 0124-4 Spark Plug, 14mm, 13/16 Hex, 3/8 Reach, Gasket Seat
Universal Fit, Gasket Spark Plug Seat Style, 0.375" Spark Plug Reach, 14mm Thread Pitch
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ACCEL U-Groove performance spark plugs produce a larger spark for more power at high RPMs. Improves throttle response & fuel economy, less fouling. Purified Alumina insulator prevents arcing. Machine rolled threads protect heads. 035 gap.
14mm, 13/16" Hex, 3/8" Reach
Spark Plug Cross-Reference:
- Autolite = A21X
- U-Groove designed for spark delivery
- Copper core utilized for maximum spark
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Q & A
Get the best out of your ignition system! Here we take a look at some of the differences between factory plug wires and the improvements you'll receive with a quality set of aftermarket performance wires.
Pat talks about our red solid core spark plug wire and rajah ends.
In this episode, Project Chevelle takes a big step in its muscle car transformation. It's out with the little old 307 and to the dyno with our new 383 from BluePrint Engines!