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
-
![Cobb [06 - 14 WRX, 04 - 21 STI, 06 - 09 Legacy GT/Outback XT, 06 - 13 Forester XT] 2in Up Pipe - JDMuscleTurbo Uppipescobb512260](//jdmuscleusa.com/cdn/shop/products/cobb-06-14-wrx-04-21-sti-06-09-legacy-gtoutback-xt-06-13-forester-xt-2in-up-pipe-5151324.jpg?v=1775590815&width=220)
Cobb 2in Up Pipe
Fits: 06-14 WRX, 04-21 STI, 06-09 Legacy GT/Outback XT, 06-13 Forester XT
Regular price $256.00Sale price $256.00 Regular priceUnit price per$256.00 -
TR Twin Scroll High Flow Catless Downpipe | TR-ES1005
Fits: 02-07 WRX, 04-07 STI
Regular price $710.00Sale price $710.00 Regular priceUnit price per$620.00 -
Up to $110 offPLM Precision Works Top Feed TGV Housing & Fuel Rail Kit
Fits: 08-14 WRX, 07-18 STI, 08-12 LGT, 08-13 FXT
Regular price $435.00Sale price $435.00 Regular priceUnit price per$545.00 -
Up to $263 off
In StockPerrin 02-14 WRX / 04-21 STI Oil Cooler Kit | PSP-OIL-110
Only 15 leftRegular price $789.00Sale price $789.00 Regular priceUnit price per$1,052.00 -
![Tomei [06–14 WRX, 04–07 STI, 05–09 LGT, 04–13 FXT] Poncam Camshafts | TA301A-SB02A - JDMuscleCamsTOMTA301A-SB02A](//jdmuscleusa.com/cdn/shop/products/tomei-06-14-wrx-04-07-sti-05-09-lgt-04-13-fxt-poncam-camshafts-ta301a-sb02a-2883655.jpg?v=1781014153&width=220)
Up to $88 off
In StockTomei Poncam Camshafts | TA301A-SB02A
Fits: 06–14 WRX, 04–07 STI, 05–09 LGT, 04–13 FXT
Only 5 leftRegular price $792.00Sale price $792.00 Regular priceUnit price per$880.00 -
ETS 08-14 WRX / 04-21 STI V2 MaxFlow Header Exhaust Manifold | 200-10-EXM-PARENT
Regular price $1,495.00Sale price $1,495.00 Regular priceUnit price per$1,495.00 -
In StockHKS 02-07 WRX / 04-07 STI SSQV4 Blow Off Valve | 71008-AF006
Regular price $435.00Sale price $435.00 Regular priceUnit price per$435.00 -
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 $3 off
In StockVibrant 3-Bolt High Temperature Exhaust Gasket - Universal
Regular price From $5.99Sale price From $5.99 Regular priceUnit price per$7.99 -
Royal Purple Ultra Performance Grease - Universal
Regular price $20.00Sale price $20.00 Regular priceUnit price per$20.00 -
NRG Fender Washer Kit FW-200 Titanium Burn - Universal | FW-200TT
Regular price $44.00Sale price $44.00 Regular priceUnit price per$44.00 -
In StockNRG Classic White Wood Glowing Green Grain Steering Wheel - Universal | ST-015BK-GL
Only 4 leftRegular price $160.00Sale price $160.00 Regular priceUnit price per$160.00 -
Up to $221 offPerrin Air Oil Separator - Neon Yellow | PSP-ENG-605NY
Fits: 02-07 WRX, 04-07 STI
Regular price $351.00Sale price $351.00 Regular priceUnit price per$572.00 -
![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
Regular price $187.74Sale price $187.74 Regular priceUnit price per$187.74 -
In StockBrian Crower Intake Valves WRX 2002-2014 / STI 2004-2019
Only 6 leftRegular price From $147.81Sale price From $147.81 Regular priceUnit price per$0.00 -
![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 $4.99 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 $45.00Sale price $45.00 Regular priceUnit price per$49.99
![Cobb [06 - 14 WRX, 04 - 21 STI, 06 - 09 Legacy GT/Outback XT, 06 - 13 Forester XT] 2in Up Pipe - JDMuscleTurbo Uppipescobb512260](http://jdmuscleusa.com/cdn/shop/products/cobb-06-14-wrx-04-21-sti-06-09-legacy-gtoutback-xt-06-13-forester-xt-2in-up-pipe-5151324.jpg?v=1775590815&width=220)
![Tomei [06–14 WRX, 04–07 STI, 05–09 LGT, 04–13 FXT] Poncam Camshafts | TA301A-SB02A - JDMuscleCamsTOMTA301A-SB02A](http://jdmuscleusa.com/cdn/shop/products/tomei-06-14-wrx-04-07-sti-05-09-lgt-04-13-fxt-poncam-camshafts-ta301a-sb02a-2883655.jpg?v=1781014153&width=220)
![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)