5 Stars
Made a huge difference from stock plugs


Fitment Information:
This is the factory spark plug as installed in the 2018 Subaru WRX STI Type RA and 2019 Subaru WRX STI. The main differences are a heat range that is one-step cooler as well as a slightly tighter gap than previous factory spark plugs. These serve as a factory replacement for the 2018 STI Type RA and 2019 STI and a great upgrade for modified 2.5L Turbocharged Subarus.
Subaru 2.5L Spark Plugs WRX, STI, Legacy GT, Forester XT
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