Built for wider heat range applications, the NGK Standard Spark Plug features a patented triple gasket-sealing that checks gas leakage. Insulated with alumina ceramics, it offers optimal heat transfer. Plated with silver chromate and zinc, it boasts of a copper core and a nickel-tipped electrode for durability.Features Alumina ceramics for electrical insulation Longer insulator nose for foul prevention 3-step trivalent silver chromate- and zinc-plating for corrosion resistance Specifications Weight: 1 lb Electrode Core Material: Copper Electrode Tip Material: Nickel Thread Size: 14mm Spark Plug Reach: 9.5mm Seat Style: Gasket Type: Spark Plug Diameter: 14mm Quantity: 1 Manufacturer #: 6703