NGK Copper Spark Plugs One Step Colder Mitsubishi EVO 8/9 03-06
NGK Iridium Spark Plugs One Step Colder 2309 Subaru WRX 06-14/STI 04-21/Legacy GT 05-12
NGK Iridium Spark Plugs One Step Colder WRX 02-05
NGK Iridium Spark Plugs Stock Heat Range Mitsubishi Evo 8/9 03-06
NGK Iridium Spark Plugs Stock Heat Range Mitsubishi EVO X 08-15
NGK Laser Iridium Stock Heat Range Spark Plugs WRX 15-21 / Forester XT 14-17