NGK Iridium Spark Plugs WRX STi      
 
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NGK WRX STi Iridium Spark Plugs
Price: $36.00 - $39.60
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  • NGK plugs are priced as a full set of 4 plugs.
  • One step colder plugs are only recommended for WRXs running more that 100hp over stock.
  • NGK Iridium plugs come pre-gapped from the factory and are not intended to be gapped with traditional plug gappers. Do so at your own risk.
 
Product Specification
BrandNGK
Price from 36 to 39.6

The NGK WRX and STi Iridium Spark Plugs have 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 reccomended for cars with heavy modifications. These NGK plugs will get your Turbo Subaru 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.