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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In StockIAG V3 Black Top Feed TGV Housings with Butterfly Pass Thru
Fits: 08-14 WRX, 07-14 STI, 07-12 LGT, 09-13 FXT
Only 1 leftRegular price $399.99Sale price $399.99 Regular priceUnit price per$399.99 -
In StockIAG Performance 550 Series EJ25 Short Block
Fits: 02-14 WRX, 04-21 STI, 04-13 FXT, 05-09 LGT
Only 1 leftRegular price $4,499.00Sale price $4,499.00 Regular priceUnit price per$0.00 -
Up to $12 off
In StockTurbo XS 3in Downpipe to OEM Cat-Back Adapter w/OEM Donut Gasket
Fits: WRX/STI
Regular price $61.00Sale price $61.00 Regular priceUnit price per$73.00 -
![Cobb Tuning [04 - 20 STI, 02 - 07 WRX, 04 - 08 FXT] 4 Bar MAP Sensor Upgrade Kit - JDMuscleEngine Management SensorscobbA12700](//jdmuscleusa.com/cdn/shop/products/cobb-tuning-04-20-sti-02-07-wrx-04-08-fxt-4-bar-map-sensor-upgrade-kit-3840658.jpg?v=1770333079&width=220)
![Cobb Tuning [04 - 20 STI, 02 - 07 WRX, 04 - 08 FXT] 4 Bar MAP Sensor Upgrade Kit - JDMuscleEngine Management SensorscobbA12700](//jdmuscleusa.com/cdn/shop/products/cobb-tuning-04-20-sti-02-07-wrx-04-08-fxt-4-bar-map-sensor-upgrade-kit-7574860.jpg?v=1770333079&width=220)
In StockCOBB 4-Bar MAP Sensor Kit - Cast Manifold
Fits: 04-21 STI, 02-07 WRX, 04-08 FXT
Regular price $236.00Sale price $236.00 Regular priceUnit price per$236.00 -
Forced Performance FP GREEN Turbocharger 84mm 8cm IWG w/ Oil Feed Line Subaru STI 2004+ / WRX 2002-2007 | 2025110
Regular price $1,539.00Sale price $1,539.00 Regular priceUnit price per$1,539.00 -
![COBB [02 - 14 WRX, 07 - 21 STI, 07 - 12 LGT, 07 - 11 FXT] Fuel Injectors Top Feed 1300x - JDMuscleFuel Injectors and Accessoriescobb312230](//jdmuscleusa.com/cdn/shop/products/cobb-02-14-wrx-07-21-sti-07-12-lgt-07-11-fxt-fuel-injectors-top-feed-1300x-2633778.jpg?v=1775590690&width=220)
![COBB [02 - 14 WRX, 07 - 21 STI, 07 - 12 LGT, 07 - 11 FXT] Fuel Injectors Top Feed 1300x - JDMuscleFuel Injectors and Accessoriescobb312230](//jdmuscleusa.com/cdn/shop/products/cobb-02-14-wrx-07-21-sti-07-12-lgt-07-11-fxt-fuel-injectors-top-feed-1300x-6193334.jpg?v=1775590690&width=220)
Up to $8 offCobb Tuning 1300x² Top-Feed Fuel Injectors
Fits: 02-14 WRX, 07-21 STI, 05-12 Legacy GT, 06-13 Forester XT
Regular price $952.00Sale price $952.00 Regular priceUnit price per$960.00 -
![Mishimoto [02-14 WRX, 04-21 STI] Titanium Turbo Blanket - JDMuscleHeat Isolation & Heat WrapmisMMTB-WRX-01](//jdmuscleusa.com/cdn/shop/products/mishimoto-02-14-wrx-04-21-sti-titanium-turbo-blanket-1304997.jpg?v=1781013555&width=220)
![Mishimoto [02-14 WRX, 04-21 STI] Titanium Turbo Blanket - JDMuscleHeat Isolation & Heat WrapmisMMTB-WRX-01](//jdmuscleusa.com/cdn/shop/products/mishimoto-02-14-wrx-04-21-sti-titanium-turbo-blanket-5379991.png?v=1781013556&width=220)
Up to $9.05 off
In StockMishimoto Titanium Turbo Blanket
Fits: 02-14 WRX, 04-21 STI
Only 5 leftRegular price $85.95Sale price $85.95 Regular priceUnit price per$95.00 -
Up to $60 off
In StockPLM Precision Works Top Feed Fuel Rails WRX 2002-2014 / STI 2007-2020 / Legacy GT 2008-2012 / Forester XT 2006-2013 | PW-TOP-FEED-FR-SUB
Only 8 leftRegular price $135.00Sale price $135.00 Regular priceUnit price per$195.00 -
In StockHKS 3 Layer Dry 200mm Green Replacement Filter Element
Fits: Universal
Regular price $29.00Sale price $29.00 Regular priceUnit price per$29.00 -
Up to $20 offRadium Engineering Dual Catch Can Kit 2002-2014 WRX / 2004-21 STI / 2004-2013 Forester XT
Regular price $379.95Sale price $379.95 Regular priceUnit price per$399.95 -
![Torque Solution [02-25 WRX, 04-21 STI] V3 Billet Pitch Stop Engine Mount | TS-SU-011](//jdmuscleusa.com/cdn/shop/products/torque-solution-v3-billet-pitch-stop-engine-mount-subaru-wrx-2002-2014-sti-2004-2019-engine-mounts-torque-solution-black-tqsts-su-011.jpg?v=1614518869&width=220)
![Torque Solution [02-25 WRX, 04-21 STI] V3 Billet Pitch Stop Engine Mount | TS-SU-011](//jdmuscleusa.com/cdn/shop/products/torque-solution-v3-billet-pitch-stop-engine-mount-subaru-wrx-2002-2014-sti-2004-2019-engine-mounts-torque-solution-2.jpg?v=1614676005&width=220)
Up to $13.10 off
In StockTorque Solution V3 Billet Pitch Stop Engine Mount | TS-SU-011
Fits: 02-26 WRX, 04-21 STI
Regular price From $98.00Sale price From $98.00 Regular priceUnit price per$111.10 -
In StockWalbro 450lph In-Tank Fuel Pump High Pressure Version | F90000274 - Universal
Regular price From $141.00Sale price From $141.00 Regular priceUnit price per$0.00 -
In StockGrimmSpeed Lower Uppipe Gasket | 026001
Only 1 leftRegular price $29.00Sale price $29.00 Regular priceUnit price per$29.00 -
In StockGrimmspeed 02-07 WRX / 04-21 STI / 04-08 FXT Top Mount Intercooler Y-Pipe Kit Black | 090096
Only 1 leftRegular price $245.00Sale price $245.00 Regular priceUnit price per$245.00 -
Up to $15 off
In StockAEM Fuel Pump 340lph - Universal
Regular price $117.95Sale price $117.95 Regular priceUnit price per$132.95 -
Up to $0.25 off
In StockRadium Engineering 1/8 NPT Plug - Universal
Only 4 leftRegular price $4.70Sale price $4.70 Regular priceUnit price per$4.95
![Cobb Tuning [04 - 20 STI, 02 - 07 WRX, 04 - 08 FXT] 4 Bar MAP Sensor Upgrade Kit - JDMuscleEngine Management SensorscobbA12700](http://jdmuscleusa.com/cdn/shop/products/cobb-tuning-04-20-sti-02-07-wrx-04-08-fxt-4-bar-map-sensor-upgrade-kit-3840658.jpg?v=1770333079&width=220)
![Cobb Tuning [04 - 20 STI, 02 - 07 WRX, 04 - 08 FXT] 4 Bar MAP Sensor Upgrade Kit - JDMuscleEngine Management SensorscobbA12700](http://jdmuscleusa.com/cdn/shop/products/cobb-tuning-04-20-sti-02-07-wrx-04-08-fxt-4-bar-map-sensor-upgrade-kit-7574860.jpg?v=1770333079&width=220)
![COBB [02 - 14 WRX, 07 - 21 STI, 07 - 12 LGT, 07 - 11 FXT] Fuel Injectors Top Feed 1300x - JDMuscleFuel Injectors and Accessoriescobb312230](http://jdmuscleusa.com/cdn/shop/products/cobb-02-14-wrx-07-21-sti-07-12-lgt-07-11-fxt-fuel-injectors-top-feed-1300x-2633778.jpg?v=1775590690&width=220)
![COBB [02 - 14 WRX, 07 - 21 STI, 07 - 12 LGT, 07 - 11 FXT] Fuel Injectors Top Feed 1300x - JDMuscleFuel Injectors and Accessoriescobb312230](http://jdmuscleusa.com/cdn/shop/products/cobb-02-14-wrx-07-21-sti-07-12-lgt-07-11-fxt-fuel-injectors-top-feed-1300x-6193334.jpg?v=1775590690&width=220)
![Mishimoto [02-14 WRX, 04-21 STI] Titanium Turbo Blanket - JDMuscleHeat Isolation & Heat WrapmisMMTB-WRX-01](http://jdmuscleusa.com/cdn/shop/products/mishimoto-02-14-wrx-04-21-sti-titanium-turbo-blanket-1304997.jpg?v=1781013555&width=220)
![Mishimoto [02-14 WRX, 04-21 STI] Titanium Turbo Blanket - JDMuscleHeat Isolation & Heat WrapmisMMTB-WRX-01](http://jdmuscleusa.com/cdn/shop/products/mishimoto-02-14-wrx-04-21-sti-titanium-turbo-blanket-5379991.png?v=1781013556&width=220)
![Torque Solution [02-25 WRX, 04-21 STI] V3 Billet Pitch Stop Engine Mount | TS-SU-011](http://jdmuscleusa.com/cdn/shop/products/torque-solution-v3-billet-pitch-stop-engine-mount-subaru-wrx-2002-2014-sti-2004-2019-engine-mounts-torque-solution-black-tqsts-su-011.jpg?v=1614518869&width=220)
![Torque Solution [02-25 WRX, 04-21 STI] V3 Billet Pitch Stop Engine Mount | TS-SU-011](http://jdmuscleusa.com/cdn/shop/products/torque-solution-v3-billet-pitch-stop-engine-mount-subaru-wrx-2002-2014-sti-2004-2019-engine-mounts-torque-solution-2.jpg?v=1614676005&width=220)
