Optimize your Subaru STI 2004-2007 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.
Subaru STI 2004-2007 Engine Parts
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Up to $5 offBlox Racing T4 Turbo Inlet Flange, 1018 Mild Steel - Universal
Regular price $20.00Sale price $20.00 Regular priceUnit price per$25.00 -
Up to $2.50 offBlox Racing T3/T4 Divided Turbo Inlet Flange, 1018 Mild Steel - Universal
Regular price $22.50Sale price $22.50 Regular priceUnit price per$25.00 -
Up to $1.20 off
In StockBlox Racing TiAL/Deltagate 38mm Weld-On Wastegate Flange, 1018 Mild Steel - Universal
Only 2 leftRegular price $10.80Sale price $10.80 Regular priceUnit price per$12.00 -
Up to $21.50 offGReddy PRofec Electronic Boost Controller - Universal | 15500214
Regular price $408.50Sale price $408.50 Regular priceUnit price per$430.00 -
Up to $21 offGReddy Type FV Blow Off Valve Kit WRX/STI 2002-2007 | 11561207
Regular price $399.00Sale price $399.00 Regular priceUnit price per$420.00 -
Up to $7.50 offSeibon Carbon Fiber Tube 47in x .63in Universal | CFTUBE16
Regular price $42.50Sale price $42.50 Regular priceUnit price per$50.00 -
Up to $1.21 off
In StockTorque Solution Tial Blow off Valve Adapter WRX 2002-2007 / STI 2004-21 | TS-SU-TIAL
Only 7 leftRegular price $41.00Sale price $41.00 Regular priceUnit price per$42.21 -
Up to $1.10 offTorque Solution Stainless Steel Blow Off Valve Flange Tial Q & Q-R - Universal
Regular price $40.00Sale price $40.00 Regular priceUnit price per$41.10 -
Up to $0.65 off
In StockTorque Solution Aluminum Blow Off Valve Flange Tial Q & Q-R - Universal
Only 6 leftRegular price $36.00Sale price $36.00 Regular priceUnit price per$36.65 -
In StockTorque Solution Billet Oil Drain Flange w/ Integrated -10 Flare: Universal
Only 5 leftRegular price $29.00Sale price $29.00 Regular priceUnit price per$29.00 -
Up to $4.99 off
In StockTorque Solution Post Maf Silicone Intake Hose WRX 2002-2007 / WRX STI 2004-2007 | TS-SU-008
Only 6 leftRegular price $60.00Sale price $60.00 Regular priceUnit price per$64.99 -
Torque Solution Tial 44mm Wastegate Inlet Flange - Universal
Regular price $27.00Sale price $27.00 Regular priceUnit price per$27.00 -
In StockTorque Solution Tial 44mm Wastegate Outlet Flange - Universal
Only 1 leftRegular price $27.00Sale price $27.00 Regular priceUnit price per$27.00 -
In StockTorque Solution Tial 38mm Wastegate Outlet Flange - Universal
Only 9 leftRegular price $27.00Sale price $27.00 Regular priceUnit price per$27.00 -
Up to $5.66 offTorque Solution Red Radiator Stay Bracket WRX/STI 2002-2007
Regular price $61.00Sale price $61.00 Regular priceUnit price per$66.66 -
In StockTorque Solution Exhaust Hanger - Universal | Per Hanger
Regular price From $16.00Sale price From $16.00 Regular priceUnit price per$16.00
