NGK (4339) Standard Spark Plug, Pack of 1
- Designed to operate over a much wider heat range than ordinary plugs.
- High alumina ceramics for better heat transfer and electrical insulation.
- Solid copper core and nickel tipped electrode provide a longer plus life.
- Patented triple gasket sealing process eliminates the possibility of combustion gas leakage.
- Corrugated ribs on insulator prevents flashover.
- Triple gasket seal eliminates combustion gas leakage.