NGK Spark Plug Stock 6955

98 pure copper core increases heat dissipation for more reliable starts and prevents spark plug from overheating Highgrade alumina silicate ceramic insulator for superior strength and heat transfer Coldrolled threads to prevent crossthreading and damage to cylinder heads Trivalent plating eliminates need for antiseize and corrugated ribs prevent flashover Quantity 1 per package Fit type Universal Fit.