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 each
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 each