NGK Laser Iridium Spark Plug Set 2015-2021 WRX

NGK Laser Iridium spark plugs provide superior ignitability and long service life. Fine wire iridium tipped center electrode and fine wire platinum tipped ground electrode ensures slow wear rate providing stable idle, superior anti fouling, improved fuel efficiency and lower emissions. 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 Diameter: 12mm Thread Pitch: 1.25mm Seat Type: Gasket Reach: 26.5mm (1.04") Hex Size: 9/16" (14mm) Terminal Type: Solid Overall Height: ISO Gap: .024" (0.6mm) CENTER ELECTRODE Material: Iridium Type: Fine Wire Size: 0.6mm Projection: Projected GROUND ELECTRODE Material: Platinum Type: Standard Quantity: 4 SPECIFICATIONS Resistor: Yes Resistor Value: 5k Ohm Heat Range: 8 Torque Specs: Cast Iron: 10.8-18 lb. ft. Aluminum: 10.8-14.5 lb. ft. PART INFORMATION Brand: NGK/NTK Warranty: 60 Days Longevity: 100k Miles