2004-2005 STI Engine

Built for your 2004-2005 Subaru WRX STI, this engine collection offers a wide range of parts designed to enhance power, response, and durability. Whether you're looking to replace worn components or upgrade for better performance, you'll find everything from pistons and rods to gaskets and seals tailored for your STI.

Our selection includes high-quality aftermarket and OEM-style engine components that help improve reliability and engine efficiency. These parts are perfect for enthusiasts aiming to boost power output, improve throttle response, or maintain the longevity of their WRX STI’s heart.

• Pistons, rods, and crankshafts
• Gaskets, seals, and engine rebuild kits
• Valve train components and timing parts
• Performance upgrades for increased horsepower

Shop engine upgrades for your 2004-2005 Subaru WRX STI at Subimods.