NGK Spark Plugs (One Step Colder) for EJ25 (2004+STI, 2006-2014 WRX) - LFR7AIXPart Number: ngk2309
The fine Iridium tip ensures high durability and a consistently stable spark. Iridium alloy has extremely high melting point, perfect for today's high-tech, high-performance engines. Trivalent Metal Plating - superior anti-corrosion and anti-seizing properties. Outstanding acceleration, high fuel efficiency and durability. Ultimate design, technology and performance.
These are one step colder plugs and are recommended for higher horsepower applications. A higher heat range number does not improve engine performance, it increases the plugs ability to dissipate heat.
Stock Number 2309
Heat Range: 7
Plug Gap: .032
Please Note: This is a single plug.
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