2011-2014 Subaru STI NGK Iridium Spark Plugs
More Durability and a Higher Melting Point compared to Platinum, better center electrode anti-oxidation and anti-erosion, improved ignition, superior anti-fouling, lower required voltage, new metal shell plating process for better anti-corrosion. One Step Colder plugs are recommended for cars with heavy modifications. These NGK plugs will get your 2011-2014 STI running smoother and free up some power through increased efficiency and increased heat resistance. These are available in stock heat or one step colder for cars running approximately 100 horsepower more than stock. Please make sure you choose the correct vehicle below.
- NGK spark plugs are sold in sets of four (4)
- Subaru STI 2011-2014
|Stock Heat||6619||$45.80||$30.52||3 available|
|One Step Colder||2309||$45.80||$30.52||3 available|