Subaru WRX STI Engine Parts

We have 25 engine parts in stock that fit the Subaru WRX STI (model years 2004 to 2021), shipped free anywhere in the USA. Fitment depends on the year, engine and trim, so pick your exact vehicle in the selector at the top of the page, and check the notes on the product page, before you order.

Brands for the Subaru WRX STI: Torque Solution (8), Go Fast Bits (3), Mishimoto (3), Turbosmart (2), Perrin Performance (2), ACT (2), Turbo XS (1), Radium Engineering (1).

Engine Parts for the Subaru WRX STI

Shop all engine parts

Other parts for the Subaru WRX STI: Air and Fuel Delivery Parts, Brake Parts, Exhaust Systems, Suspension Parts.

Common questions

Will these parts fit my Subaru WRX STI?

The parts above fit at least some model years and trims of the Subaru WRX STI. Use the vehicle selector at the top of the page to see only the parts for your exact Year, Make, Model and engine. If you are unsure, contact our support team and we will help you check the fit before you order.

What if the part does not fit?

Returns are accepted within 60 days, unused and in the original packaging, and return shipping is free. See Shipping & Returns for the details.

!