NGK Spark Plug - LFR7AIX - 2309

Why Choose the NGK Spark Plug LFR7AIX 2309? *Each plug sol separately. Spark Plugs for 2.5L 2006 - 2014 WRX 2004 - 2020 STI (One Step Colder for desired heat range)  NGK IX Iridium Series 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 Size: 14mm Thread Pitch: 1.25mm Seat Type: Gasket Resistor Value: 5K Ohm Reach: 26.5mm (1.04") Hex Size: 5/8" (16mm) Terminal Type: Solid Overall Height: ISO Gap: .031" (0.8mm) Center Electrode Material: Iridium Type: Fine Wire Size: 0