Autolite Copper Core Spark Plug, Resistor

Autolite Copper Core spark plugs deliver quick starts, good fuel economy, and smooth acceleration. Copper Core spark plugs feature high alumina ceramic for high dielectric strength, and a steel shell for installation robustness. These spark plugs are engineered with a high nickel alloy center and ground electrode for extended life.

Copper-glass seal bonds insulator, terminal post center electrode together; assures full required voltage at spark gap; gas-tight seal (100% leak proof) Multi-rib insulator reduces danger of "flash-over" One-piece terminal post adds strength Resistor reduces radio frequency interference (RFI) and electrode erosion