Optimize your Subaru STI 2015-2021 engine's performance with a comprehensive range of top-quality aftermarket parts from industry-leading brands. Elevate the power and efficiency of your vehicle with ETS, HKS, Perrin, Mishimoto, AMS, Grimmspeed, Cobb, Remark, PLM, Turbosmart, IAG Performance, and more. Enhance airflow and filtration through AIR INTAKE DUCTS and COLD AIR INTAKES, while maintaining engine cleanliness with AIR OIL SEPARATORS and CATCH CANS. Experience impeccable control and responsiveness with BLOW OFF VALVES and BOOST CONTROL SOLENOID COVERS, complemented by the reliability of ENGINE MOUNTS and meticulously crafted ENGINE MANAGEMENT HARNESSES. Simplify maintenance and improve overall performance with DIPSTICKS and explore comprehensive ENGINE PACKAGE DEALS for a holistic approach to upgrading your Subaru WRX's engine. Unleash the full potential of your vehicle through precision-engineered components designed to deliver both power and durability, all meticulously designed to give your Subaru STI the edge on the road or track.
2015-2021 Subaru WRX STI Engine Parts
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Up to $12.20 off
In StockBLOX Racing Oil Filter Block Adapter / Oil Pressure / Oil Temperature Universal
Regular price From $44.00Sale price From $44.00 Regular priceUnit price per$55.00 -
Up to $4.40 off
In StockBlox Racing Magnetic Drain Plug M12 x 1.25 Black - Universal
Only 6 leftRegular price $17.60Sale price $17.60 Regular priceUnit price per$22.00 -
Up to $0.77 off
In StockTorque Solution Billet Oil Drain Flange w/ Integrated -10 Flare: Universal
Only 6 leftRegular price $27.00Sale price $27.00 Regular priceUnit price per$27.77 -
Up to $4.32 off
In StockTorque Solution Billet Adapter Flange Greddy to Tial - Universal
Only 1 leftRegular price $39.00Sale price $39.00 Regular priceUnit price per$43.32 -
Up to $4.43 off
In StockTorque Solution Billet Adapter Flange HKS to Tial - Universal
Only 2 leftRegular price $40.00Sale price $40.00 Regular priceUnit price per$44.43 -
Torque Solution Straight Silicone Coupler - Universal
Regular price From $14.00Sale price From $14.00 Regular priceUnit price per$14.00 -
In StockTorque Solution Transition Silicone Coupler - Universal
Only 3 leftRegular price From $11.25Sale price From $11.25 Regular priceUnit price per$11.25 -
Up to $3 off
In StockTorque Solution 45 Degree Silicone Elbow - Universal
Only 6 leftRegular price From $24.00Sale price From $24.00 Regular priceUnit price per$25.00 -
Up to $4.43 offTorque Solution Tial 1.25in Modular Clamp on Adapter - Universal
Regular price $40.00Sale price $40.00 Regular priceUnit price per$44.43 -
Up to $4.99 off
In StockTorque Solution Boost Leak Tester Billet - Universal
Only 10 leftRegular price $45.00Sale price $45.00 Regular priceUnit price per$49.99 -
Up to $10.21 off
In StockTorque Solution Boost Leak Tester - Universal
Only 3 leftRegular price From $58.00Sale price From $58.00 Regular priceUnit price per$66.65 -
Torque Solution Battery Terminals Aluminum M6 Bolt to SAE - Universal
Regular price $23.00Sale price $23.00 Regular priceUnit price per$23.00 -
Up to $0.54 off
In StockTorque Solution Oil Drain Flange: -10AN for Garrett GT/GTX and BW EFR - Universal
Only 6 leftRegular price $25.00Sale price $25.00 Regular priceUnit price per$25.54 -
Up to $174.99 offTorque Solution Engine / Transmission / Pitch Mount Set Blue WRX 2002-2014 / STI 2004-2019
Regular price From $547.00Sale price From $547.00 Regular priceUnit price per$699.99 -
Walbro Universal 400lph In-Tank Installation Kit - E85 Version
Regular price $30.00Sale price $30.00 Regular priceUnit price per$0.00 -
Up to $20.05 off
In StockMishimoto Heavy Duty Transmission Cooler W/ Electric Fan - Universal
Only 13 leftRegular price $199.95Sale price $199.95 Regular priceUnit price per$220.00
