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Vehicle fitment:

06-14 WRX / 04+ STi

NGK Iridium IX Spark Plugs- Subaru

  • These are one step colder than stock with a heat range of 7. The plugs are sold as a set of four. NGK Iridium IX Spark Plugs are designed specifically for the performance enthusiast. Iridium IX offers extreme ignitability, improved throttle response and superior anti fouling.

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