98% pure copper core increases heat dissipation for more reliable starts and prevents spark plug from overheating
High-grade alumina silicate ceramic insulator for superior strength and heat transfer
Cold-rolled threads to prevent cross-threading and damage to cylinder heads
Trivalent plating eliminates need for anti-seize and corrugated ribs prevent flashover
Quantity: 1 per package
Fit type: Universal Fit
Features corrugated ribs to prevent flashover. Designed to virtually eliminate combustion gas leakage & to provide greater spark transfer, greater heat transfer, high dielectric strength, improved anti-fouling & corrosion resistance