ACCEL - 14mm Thread - .708 in Reach - Tapered Seat - 4 Pack 5 in ID - 12

5 in ID - 12 in Length - 350 lb/in Spring Rate - Steel - Silver Powder Coat - Each

1 specification

but with less interior resonance

75 in OD - Steel - Natural - MD3 - Chevy Camaro / Ford Mustang - Kit

ACCEL - 14mm Thread - .708 in Reach - Tapered Seat - 4 Pack 5 in ID - 12ACCEL 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