HP Copper Spark Plug - 0526-4 oil-dipsticks screw in air bleeds for

screw in air bleeds for easy fine tuning

9 V8 1974 - 1978 Dodge Ramcharger 440/7

2002-2013 Chevrolet Suburban 1500

1969-1974 Plymouth Road Runner 440 CID

HP Copper Spark Plug - 0526-4 oil-dipsticks screw in air bleeds forOverview: ACCEL HP Spark Plugs are made with a Copper core which is a better conductor than Platinum and Iridium. They deliver a stronger spark especially in high performance applications where high combustion pressures are present. Copper is much better at dissipating heat than other materials which lessens the chance of a misfire. ACCEL HP Spark Plugs are gapable allowing you to open the gap exposing a larger flame kernel or close it if needed for