NGK Double Fine Electrode Iridium Spark Plug 8211 DIFR5E11

NGK single iridium plugs were designed specifically for the performance enthusiast. Fine wire center 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. 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 Shell Thread Diameter14mm Thread Pitch1.25mm Seat TypeGasket Reach19mm (3/4\”) Hex Size5/8\” (16mm) Terminal TypeSolid Overall HeightISO Gap.043\” (1.1mm) Center Electrode MaterialIridium TypeFine Wire Size0.6mm ProjectionExtended Projection Ground Electrode MaterialPlatinum TypeFine Wire Quantity1 Specifications ResistorYes Resistor Value5k Ohm Heat Range5 Torque SpecsCast Iron: 18-25.3 lb. ft. Aluminum: 18-21.6 lb. ft. Part Information BrandNGK/NTK Warranty60 Days Longevity100k Miles