HP Copper Spark Plug - 578C1-6 brake-line-repair-kit 6 V8 1975 - 1986

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2003-2006 Cadillac Escalade EXT

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HP Copper Spark Plug - 578C1-6 brake-line-repair-kit 6 V8 1975 - 1986Overview: 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