NGK single iridium plugs were designed specifically for the performance enthusiast. Fine wire centre electrode ensures high durability and a consistently stable spark. Iridium alloy has an extremely high melting point, perfect for today's high-tech, high-performance engines. Features: Trivalent metal plating provides superior anti-corrosion and anti-seizing properties. Corrugated ribs prevent flashover. Pure alumina silicate ceramic insulator provides superior strength and better heat transfer. Copper core aids in heat removal. Triple seals prevent leakage. Specifications: S hell Thread Diameter: 14mm Thread Pitch: 1.25mm Seat Type: Gasket Reach: 19mm (3/4") Hex Size: 5/8" (16mm) Terminal Type: Solid Overall Height: ISO Gap: .043" (1.1mm) Centre Electrode MaterialIridium TypeFine Wire Size1.0mm ProjectionProjected Ground Electrode Material: Platinum Type: Standard Specifications Res istor: Yes Resistor Value: 5k Ohm Heat Range: 6 Torque Specs: Cast Iron: 18-25.3 lb. ft. Aluminium: 18-21.6 lb. ft.
