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.

Autolite Copper Core Spark Plug, Resistor Copper-glass seal bonded insulator, terminal post, and center electrode provide a tight seal that is 100 percent leak-proof Multi-rib insulator reduces danger of "flash-over" to prevent misfires Full copper core electrode improves heat transfer and optimizes plug life Copper core center electrode provides higher thermal conductivity