ACCEL U-GROOVE SPARK PLUGS

Accel spark plugs feature the U-Groove ground electrode allowing the spark to build a Ball-of-Fire flame, providing you with a smoother idle and more complete combustion. Other features are: Five-rib "alumina" powder insulator to prevent flash-over and misfire, copper glass inner seal and electric heat seal to prevent combustion leakage, fused copper/nickel center electrode providing super conductivity and a wide heat range.