NGKs wide heat range results from using copper wire in place of the iron cores found in many conventional plugs Copper dissipates heat quicker, cooling the electrode and insulator tip Raised pre-ignition rating with high conduction copper and long nose insulator Each meets the requirements of high-performance engines Sold Individually

NGKs wide heat range results from using copper wire in place of the iron cores found in many conventional plugs Copper dissipates heat quicker, cooling the electrode and insulator tip Raised pre-ignition rating with high conduction copper and long nose insulator Each meets the requirements of high-performance engines Sold Individually