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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![Aeromotive Fuel Pressure Regulator [Universal] | 13129](//jdmuscleusa.com/cdn/shop/products/aeromotive-fuel-pressure-regulator-13129-universal-fuel-pressure-regulators-aeromotive-aer13129.jpg?v=1614524090&width=220)
In StockAeromotive Fuel Pressure Regulator | 13129
Fits: Universal
Only 4 leftRegular price $208.60Sale price $208.60 Regular priceUnit price per$208.60 -
In StockDeatschWerks DW200 Fuel Pump - Universal
Regular price $109.00Sale price $109.00 Regular priceUnit price per$109.00 -
In StockBrian Crower Intake Valves WRX 2002-2014 / STI 2004-2019
Only 4 leftRegular price From $147.81Sale price From $147.81 Regular priceUnit price per$0.00 -
Up to $1.80 off
In StockBlox Racing Magnetic Drain Plug M12 x 1.25 Black - Universal
Only 1 leftRegular price $16.20Sale price $16.20 Regular priceUnit price per$18.00 -
![Torque Solution [02-07 WRX / 04-21 STI] HKS Blow Off Valve Adapter w/Plug | TS-SU-HKSC](//jdmuscleusa.com/cdn/shop/products/torque-solution-hks-bov-adapter-flange-w-plug-subaru-wrx-2002-2007-sti-2004-2019-blow-off-valve-flanges-torque-solution-tqsts-su-hksc.jpg?v=1614519348&width=220)
Up to $2.99 off
In StockTorque Solution HKS Blow Off Valve Adapter w/Plug | TS-SU-HKSC
Fits: 02-07 WRX / 04-21 STI
Only 1 leftRegular price $47.00Sale price $47.00 Regular priceUnit price per$49.99 -
Up to $1.88 off
In StockTorque Solution VF Turbo Wastegate Bracket
Fits: 08-14 WRX, 04-21 STI
Regular price $47.00Sale price $47.00 Regular priceUnit price per$48.88 -
Torque Solution Billet Aluminum 1.25in Bypass Plug WRX/STI / EVO - Universal
Regular price $18.00Sale price $18.00 Regular priceUnit price per$18.00 -
Up to $1.99 off
In StockTorque Solution Spark Plug Gap Tool w/ Feeler Gauge 14mm - Universal
Only 9 leftRegular price $45.00Sale price $45.00 Regular priceUnit price per$46.99 -
Up to $0.99 off
In StockTorque Solution Spark Plug Gap Tool 14mm - Universal
Only 5 leftRegular price $37.00Sale price $37.00 Regular priceUnit price per$37.99 -
In StockTurbo XS T Clamp Stainless Steel 74-80mm/2.91-3.14in - Universal
Regular price $15.00Sale price $15.00 Regular priceUnit price per$10.00 -
Up to $5.76 off
In StockGREDDY TO TXS TYPE H BOV Adapter - Universal
Only 2 leftRegular price $36.00Sale price $36.00 Regular priceUnit price per$41.76 -
![TurboXS [02-07 WRX, 04-07 STI] Front Mount Intercooler | WS-FMIC](//jdmuscleusa.com/cdn/shop/products/turboxs-front-mount-intercooler-subaru-wrx-sti-2002-2007-ws-fmic-intercoolers-turbo-xs-02-05-wrx-04-05-sti-txsws-fmic.jpg?v=1614518690&width=220)
Up to $441.18 off
In StockTurboXS Front Mount Intercooler
Fits: 02-07 WRX, 04-07 STI
Only 9 leftRegular price From $1,202.00Sale price From $1,202.00 Regular priceUnit price per$1,643.18 -
In StockInjector Dynamics Denso USCAR PnP Injector Adapter - Universal
Only 3 leftRegular price $17.33Sale price $17.33 Regular priceUnit price per$17.33 -
Up to $3.57 off
In StockMishimoto Transition Coupler 2.5-in to 3-in - Universal
Only 19 leftRegular price From $11.95Sale price From $11.95 Regular priceUnit price per$13.00 -
Up to $2.23 off
In StockMishimoto Transition Coupler 2-in to 2.5-in - Universal
Only 7 leftRegular price From $9.95Sale price From $9.95 Regular priceUnit price per$12.05 -
Forced Performance Blue HTZ Turbocharger - Subaru Models | inc. 2002-2007 WRX / 2004+ STI | 2025050
Regular price $7,120.00Sale price $7,120.00 Regular priceUnit price per$7,120.00
![Aeromotive Fuel Pressure Regulator [Universal] | 13129](http://jdmuscleusa.com/cdn/shop/products/aeromotive-fuel-pressure-regulator-13129-universal-fuel-pressure-regulators-aeromotive-aer13129.jpg?v=1614524090&width=220)
![Torque Solution [02-07 WRX / 04-21 STI] HKS Blow Off Valve Adapter w/Plug | TS-SU-HKSC](http://jdmuscleusa.com/cdn/shop/products/torque-solution-hks-bov-adapter-flange-w-plug-subaru-wrx-2002-2007-sti-2004-2019-blow-off-valve-flanges-torque-solution-tqsts-su-hksc.jpg?v=1614519348&width=220)
![TurboXS [02-07 WRX, 04-07 STI] Front Mount Intercooler | WS-FMIC](http://jdmuscleusa.com/cdn/shop/products/turboxs-front-mount-intercooler-subaru-wrx-sti-2002-2007-ws-fmic-intercoolers-turbo-xs-02-05-wrx-04-05-sti-txsws-fmic.jpg?v=1614518690&width=220)
