NGK traditional plugs are constructed for longer life and optimum performance. Corrugated ribs prevent flashover. NGK uses only the purest alumina silicate in its ceramic insulator which give all NGK plugs greater strength and better heat transfer. Copper cored and triple sealed to further aid in heat removal and prevent interior leakage.
- Reach: 12.7mm (1/2")
- Hex Size: 13/16" (20.6mm)
- Gap: .035" (0.9mm)
- Heat Range: 5
- Gasket Seat
- Removable Terminal
I've used NGK since back in the 70's Great Plug.
This is the best plug heat range good no foul buy it