ACCEL HP Copper Spark Plug ACC-1578C1-6 Suspender Shorts The high-gloss wire jacket resists

The high-gloss wire jacket resists moisture

Rotating Group – Twin Piston Rings

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Stainless steel spark plug terminals for maximum spark energy to the plugs

During the mid-cycle refresh for the 2005 models

ACCEL HP Copper Spark Plug ACC-1578C1-6 Suspender Shorts The high-gloss wire jacket resistsACCEL 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 high boost