Accel® (84-04) GM/Ford 14mm x .708" HP Copper Spark Plug Set

Compatible: (4.6L/5.0L/5.4L/5.7L) 1984 - 2002 Chevy Camaro 1993 - 2004 Chevy Corvette 1994 - 2003 Ford Mustang 1984 - 2002 Pontiac Firebird   This part is legal for sale and use on Emissions Controlled Vehicles when used in accordance with the manufacturers application guide because it is a direct or consolidated replacement part. The following vehicles are considered Emissions Controlled Vehicles: 1966 and newer U.S. manufactured California Certified vehicles 1968 and newer U.S. manufactured Federally Certified vehicles 1968 and newer Foreign manufactured vehicle       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