NGK ILKR8E6 Laser Iridium spark plugs are a stock replacement for the daily driver Evo X. Sold individually. Price is for one plug, please adjust quantity as needed.Vehicle Fitment:2008-2015 Mitsubishi Evolution X Part Number: ILKR8E6Stock Number: 1422Heat Range: 8Thread Size: 12mmMore Info: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 Size: 12mmThread Pitch: 1.25mmSeat Type: GasketResistor Value: 5K OhmReach: 26.5mm (1.04")Hex Size: 5/8" (16mm)Terminal Type: SolidOverall Height: ISOGap: .024" (0.6mm)Center Electrode:Material: IridiumType: Fine WireSize: 0.6mmProjection: ProjectedGround Electrode:Material: PlatinumType: StandardQuantity: 1Torque Specs:Cast Iron: 10.8-18 lb. ft.Aluminum: 10.8-14.5 lb. ft. See more NGK Parts