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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![Cobb [04 - 07 WRX/STI] Front Mount Intercooler Kit Black - JDMuscleIntercoolerscobb712500-BK](//jdmuscleusa.com/cdn/shop/products/cobb-04-07-wrxsti-front-mount-intercooler-kit-black-1836721.jpg?v=1770336323&width=220)
![Cobb [04 - 07 WRX/STI] Front Mount Intercooler Kit Black - JDMuscleIntercoolerscobb712500-BK](//jdmuscleusa.com/cdn/shop/products/cobb-04-07-wrxsti-front-mount-intercooler-kit-black-7994562.jpg?v=1770336324&width=220)
In StockCobb Front Mount Intercooler Kit Black
Fits: 04-07 WRX/STI
Only 5 leftRegular price $2,120.00Sale price $2,120.00 Regular priceUnit price per$2,120.00 -
![Cobb Tuning [02 - 07 WRX, 04 - 07 STI] High Flow Air Filter - JDMuscleHigh Flow Replacement Panel Filterscobb712110](//jdmuscleusa.com/cdn/shop/products/cobb-tuning-02-07-wrx-04-07-sti-high-flow-air-filter-5484000.jpg?v=1770336323&width=220)
![Cobb Tuning [02 - 07 WRX, 04 - 07 STI] High Flow Air Filter - JDMuscleHigh Flow Replacement Panel Filterscobb712110](//jdmuscleusa.com/cdn/shop/products/cobb-tuning-02-07-wrx-04-07-sti-high-flow-air-filter-8104155.jpg?v=1770336323&width=220)
In StockCobb Tuning High Flow Air Filter
Fits: 02-07 WRX, 04-07 STI
Only 5 leftRegular price $77.00Sale price $77.00 Regular priceUnit price per$77.00 -
In StockCobb Stage 1+ Power Package with V3 Accessport
Fits: 06-07 WRX, 04-07 STI, 04-06 Forester XT
Only 2 leftRegular price $1,175.00Sale price $1,175.00 Regular priceUnit price per$1,175.00 -
![Cobb [02 - 07 WRX, 04 - 07 STI, 04 - 08 FXT] Intake + Airbox | SUB00001IA - JDMuscleIntakescobbSUB00001IA](//jdmuscleusa.com/cdn/shop/products/cobb-02-07-wrx-04-07-sti-04-08-fxt-intake-airbox-sub00001ia-9543531.jpg?v=1770336429&width=220)
![Cobb [02 - 07 WRX, 04 - 07 STI, 04 - 08 FXT] Intake + Airbox | SUB00001IA - JDMuscleIntakescobbSUB00001IA](//jdmuscleusa.com/cdn/shop/products/cobb-02-07-wrx-04-07-sti-04-08-fxt-intake-airbox-sub00001ia-7010050.jpg?v=1770336429&width=220)
In StockCobb Intake + Airbox
Fits: 02-07 WRX, 04-07 STI, 04-08 FXT
Only 2 leftRegular price $520.00Sale price $520.00 Regular priceUnit price per$520.00 -
In StockRadium Engineering 02-14 WRX / 04-21 STI Series Fuel Rail Plumbing Kit | 20-0978
Only 8 leftRegular price $379.95Sale price $379.95 Regular priceUnit price per$379.95 -
Up to $38.21 off
In StockTorque Solution Top Feed Fuel Rails Red WRX 2002-2014 / STI 2007-2020 / Legacy GT 2008-2012 / Forester XT 2006-2013 | TS-SU-400R.2
Only 3 leftRegular price $184.00Sale price $184.00 Regular priceUnit price per$222.21 -
Up to $23.32 off
In StockTorque Solution Garrett GT Turbo Oil Feed Line Kit WRX 2006-2014 / STI 2004+ | TS-SU-578
Only 4 leftRegular price $110.00Sale price $110.00 Regular priceUnit price per$133.32 -
Up to $38.21 off
In StockTorque Solution Top Feed Fuel Rails Silver WRX 2002-2014 / STI 2007-2020 / Legacy GT 2008-2012 / Forester XT 2006-2013 | TS-SU-400S.2
Only 5 leftRegular price $184.00Sale price $184.00 Regular priceUnit price per$222.21 -
Up to $38.21 off
In StockTorque Solution Top Feed Fuel Rails Gold WRX 2002-2014 / STI 2007-2020 / Legacy GT 2008-2012 / Forester XT 2006-2013 | TS-SU-400G.2
Only 8 leftRegular price $184.00Sale price $184.00 Regular priceUnit price per$222.21 -
Up to $38.21 off
In StockTorque Solution Top Feed Fuel Rails Purple WRX 2002-2014 / STI 2007-2020 / Legacy GT 2008-2012 / Forester XT 2006-2013 | TS-SU-400PR.2
Only 1 leftRegular price $184.00Sale price $184.00 Regular priceUnit price per$222.21 -
Up to $38.21 off
In StockTorque Solution Top Feed Fuel Rails Blue WRX 2002-2014 / STI 2007-2020 / Legacy GT 2008-2012 / Forester XT 2006-2013 | TS-SU-400BU.2
Only 1 leftRegular price $184.00Sale price $184.00 Regular priceUnit price per$222.21 -
Up to $43.99 off
In StockTorque Solution V2 Reversed Intake Manifold Alternator Relocation Kit WRX 2002-2014 / STI 2004-21 | TS-SU-440
Only 4 leftRegular price $206.00Sale price $206.00 Regular priceUnit price per$249.99 -
Brian Crower Stroker Kit 83mm Billet Crank/ProH625+ Rods 5.141in Custom Pistons Subaru EJ257 STI 2004-2017 | BC0628
Regular price $4,029.00Sale price $4,029.00 Regular priceUnit price per$4,029.00 -
Moroso 02-14 WRX / 04-21 STI Steel Oil Pan and Oil Pick Up Combo | 20966
Regular price $580.99Sale price $580.99 Regular priceUnit price per$580.99 -
Moroso Oil Pickup Tube for OEM Pans Subaru EJ25 Turbo WRX 2006-2014 / STI 2004-2014 | 24965
Regular price $141.99Sale price $141.99 Regular priceUnit price per$141.99 -
In StockMoroso Aluminum Coolant Overflow Tank WRX 2002-2007/ STI 2004-2007 | 63785
Only 4 leftRegular price $241.99Sale price $241.99 Regular priceUnit price per$241.99
![Cobb [04 - 07 WRX/STI] Front Mount Intercooler Kit Black - JDMuscleIntercoolerscobb712500-BK](http://jdmuscleusa.com/cdn/shop/products/cobb-04-07-wrxsti-front-mount-intercooler-kit-black-1836721.jpg?v=1770336323&width=220)
![Cobb [04 - 07 WRX/STI] Front Mount Intercooler Kit Black - JDMuscleIntercoolerscobb712500-BK](http://jdmuscleusa.com/cdn/shop/products/cobb-04-07-wrxsti-front-mount-intercooler-kit-black-7994562.jpg?v=1770336324&width=220)
![Cobb Tuning [02 - 07 WRX, 04 - 07 STI] High Flow Air Filter - JDMuscleHigh Flow Replacement Panel Filterscobb712110](http://jdmuscleusa.com/cdn/shop/products/cobb-tuning-02-07-wrx-04-07-sti-high-flow-air-filter-5484000.jpg?v=1770336323&width=220)
![Cobb Tuning [02 - 07 WRX, 04 - 07 STI] High Flow Air Filter - JDMuscleHigh Flow Replacement Panel Filterscobb712110](http://jdmuscleusa.com/cdn/shop/products/cobb-tuning-02-07-wrx-04-07-sti-high-flow-air-filter-8104155.jpg?v=1770336323&width=220)
![Cobb [02 - 07 WRX, 04 - 07 STI, 04 - 08 FXT] Intake + Airbox | SUB00001IA - JDMuscleIntakescobbSUB00001IA](http://jdmuscleusa.com/cdn/shop/products/cobb-02-07-wrx-04-07-sti-04-08-fxt-intake-airbox-sub00001ia-9543531.jpg?v=1770336429&width=220)
![Cobb [02 - 07 WRX, 04 - 07 STI, 04 - 08 FXT] Intake + Airbox | SUB00001IA - JDMuscleIntakescobbSUB00001IA](http://jdmuscleusa.com/cdn/shop/products/cobb-02-07-wrx-04-07-sti-04-08-fxt-intake-airbox-sub00001ia-7010050.jpg?v=1770336429&width=220)
