ACCEL Shorty Resistor Racing Plug - (4 Pack) H778C31 Can be made with 2″

Can be made with 2″ upper shoulder harness for Head Restraints

500 in Bore

SFI Rating 3

forged from aluminum

1965-1971 Dodge Coronet

ACCEL Shorty Resistor Racing Plug - (4 Pack) H778C31 Can be made with 2″ACCEL U Groove Spark plugs have set the standard for High Performance Spark Plugs. ACCEL Engineers developed and patented the U Groove technology which permitted the spark to develop a much larger, hotter and fuller flash front. That effectively gave a more complete burn of the air fuel mixture in the combustion chamber. Over the past 25 years engine head design and fuel management technology has changed. As a result, ACCEL is moving away from the U