ACCEL Spark Plug - 14 mm Thread - 0.750 in R - Gasket Seat - Resistor - Set of 4 Volkswagen Beetle Spring Plate Bushing Race Tuned Mechanical Advance -

Race Tuned Mechanical Advance - No Vacuum Advance

TCI Transbrake

HEI / Socket Style Terminals

They are designed with the correct pitch and ratio

Oldsmobile: Cutlass Cruiser 80 - 83

ACCEL Spark Plug - 14 mm Thread - 0.750 in R - Gasket Seat - Resistor - Set of 4 Volkswagen Beetle Spring Plate Bushing Race Tuned Mechanical Advance -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