Accel HP Copper Shorty Spark Plugs (86-87 Corvette C4)Find parts that fit my vehicle

High-Performance Spark Plug. The Accel HP Copper Shorty Spark Plugs are engineered to deliver a stronger spark and enhance ignition efficiency for high-performance engines. They promote reliable combustion by efficiently dissipating heat and minimizing misfires, especially in applications with tight clearances around exhaust headers.

Construction and Appearance. These spark plugs feature a copper core center electrode, providing superior conductivity and heat dissipation compared to platinum or iridium. They are designed with a projected tip and flat gasket seat, and include machine-rolled threads to ensure precise thread engagement and consistent torque retention. The finish is engineered for durability under demanding operating conditions.

Installation. Installation is straightforward with no drilling required. Their shorter overall length improves access in tight engine compartments. These spark plugs fit easily using common socket or wrench sizes, making them ideal for vehicles with limited space around the exhaust headers.

Application. Designed specifically for the 1986 to 1987 Corvette C4, they are compatible with factory configurations requiring a 14mm thread, .750 inch reach, and flat gasket seat spark plug.

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