Optimize your Subaru WRX 2002-2005 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 WRX the edge on the road or track.
Subaru WRX 2002-2005 Engine Parts
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In StockGates 04-14 WRX/ 04-21 STI/ 05-09 LGT Timing Belt Kit | TCK328
Regular price $358.00Sale price $358.00 Regular priceUnit price per$358.00 -
In StockTorque Solution T-Bolt Hose Clamp - Universal
Only 20 leftRegular price From $15.00Sale price From $15.00 Regular priceUnit price per$15.00 -
Up to $74.98 off
In StockTurbo XS RFL Series Hybrid Blow Off Valve
Fits: 02-07 WRX, 04-21 STI
Only 1 leftRegular price $250.00Sale price $250.00 Regular priceUnit price per$324.98 -
Grimmspeed 02-07 WRX / 04-21 STI / 04-08 FXT Top Mount Intercooler Y-Pipe Kit Red | 090095
Regular price $245.00Sale price $245.00 Regular priceUnit price per$245.00 -
Grimmspeed 3-Port Electronic Boost Control Solenoid - Subaru 02-05 WRX | 057001
Regular price $190.00Sale price $190.00 Regular priceUnit price per$190.00 -
In StockInjector Dymanics Fuel Injector PnP Adapter USCAR to Denso - Universal
Regular price $17.33Sale price $17.33 Regular priceUnit price per$17.33 -
Killer B Motorsport 4-1 Holy Header 2-Bolt w/ SwainTech Ceramic Coating WRX 2002-2014 / STI 2004-21 | HH-2BOLT-SWAIN
Regular price $1,989.00Sale price $1,989.00 Regular priceUnit price per$1,989.00 -
![COBB [02 - 07 WRX, 04 - 21 STI, 06 - 08 FXT] LF Bypass Valve | 712665 - JDMuscleBlow Off Valvescobb712665](//jdmuscleusa.com/cdn/shop/products/cobb-02-07-wrx-04-21-sti-06-08-fxt-lf-bypass-valve-712665-7110805.jpg?v=1770336431&width=220)
![COBB [02 - 07 WRX, 04 - 21 STI, 06 - 08 FXT] LF Bypass Valve | 712665 - JDMuscleBlow Off Valvescobb712665](//jdmuscleusa.com/cdn/shop/products/cobb-02-07-wrx-04-21-sti-06-08-fxt-lf-bypass-valve-712665-1547680.jpg?v=1770336431&width=220)
In StockCOBB LF Bypass Valve
Fits: 02-07 WRX, 04-21 STI, 06-08 FXT
Regular price $375.00Sale price $375.00 Regular priceUnit price per$375.00 -
Up to $22.90 off
In StockTurbosmart Kompact Plumb Back BPV
Fits: 02-07 WRX, 04-21 STI, 04-08 FXT
Only 4 leftRegular price $206.09Sale price $206.09 Regular priceUnit price per$228.99 -
![COBB [02 - 05 WRX] V3 AccessPORT | AP3 - SUB - 001 - JDMusclePlug and Play Engine ManagementcobbAP3-SUB-001](//jdmuscleusa.com/cdn/shop/products/cobb-02-05-wrx-v3-accessport-ap3-sub-001-9451861.jpg?v=1770336568&width=220)
![COBB [02 - 05 WRX] V3 AccessPORT | AP3 - SUB - 001 - JDMusclePlug and Play Engine ManagementcobbAP3-SUB-001](//jdmuscleusa.com/cdn/shop/products/cobb-02-05-wrx-v3-accessport-ap3-sub-001-5515223.jpg?v=1770336569&width=220)
Up to $73.50 off
In StockCOBB V3 AccessPORT
Fits: 02-05 WRX
Regular price $661.50Sale price $661.50 Regular priceUnit price per$735.00 -
![Radium Engineering [02 - 14 WRX/STI] Top Feed Fuel Rails Black | 20 - 0567 - 02 - JDMuscleFuel Railsrad20-0567-02](//jdmuscleusa.com/cdn/shop/files/radium-engineering-02-14-wrxsti-top-feed-fuel-rails-black-20-0567-02-7682151.jpg?v=1770327979&width=220)
![Radium Engineering [02 - 14 WRX/STI] Top Feed Fuel Rails Black | 20 - 0567 - 02 - JDMuscleFuel Railsrad20-0567-02](//jdmuscleusa.com/cdn/shop/files/radium-engineering-02-14-wrxsti-top-feed-fuel-rails-black-20-0567-02-8318867.jpg?v=1770327980&width=220)
In StockRadium Engineering Top Feed Fuel Rails Black
Fits: 02-14 WRX/STI
Only 19 leftRegular price $199.45Sale price $199.45 Regular priceUnit price per$199.45 -
Grimmspeed Top Mount Intercooler - Raw
Fits: 04-21 STI, 02-07 WRX, 04-08 FXT
Regular price $999.00Sale price $999.00 Regular priceUnit price per$999.00 -
IAG Performance 550 Series EJ25 Short Block
Fits: 02-14 WRX, 04-21 STI, 04-13 FXT, 05-09 LGT
Regular price $4,499.00Sale price $4,499.00 Regular priceUnit price per$0.00 -
Up to $17 off
In StockTurbo XS 3in Downpipe to OEM Cat-Back Adapter w/OEM Donut Gasket
Fits: WRX/STI
Regular price $56.00Sale price $56.00 Regular priceUnit price per$73.00 -
IAG EJ Competition Oil Pan Package
Fits: 02-14 WRX, 04-21 STI, 05-09 LGT, 04-13 FXT
Regular price $799.99Sale price $799.99 Regular priceUnit price per$799.99 -
![Perrin Performance [02 - 14 WRX, 04 - 21 STI] Alternator Pulley Blue | Also Fits Impreza 1993 - 2016 / Forester 1998 - 2010 / Outback 2000 - 2009 / Legacy 2000 - 2009 | PSP - ENG - 118BL - JDMusclePulleysperPSP-ENG-118BL](//jdmuscleusa.com/cdn/shop/products/perrin-performance-02-14-wrx-04-21-sti-alternator-pulley-blue-also-fits-impreza-1993-2016-forester-1998-2010-outback-2000-2009-legacy-2000-2009-psp-eng-118bl-9461788.jpg?v=1770334521&width=220)
![Perrin Performance [02 - 14 WRX, 04 - 21 STI] Alternator Pulley Blue | Also Fits Impreza 1993 - 2016 / Forester 1998 - 2010 / Outback 2000 - 2009 / Legacy 2000 - 2009 | PSP - ENG - 118BL - JDMusclePulleysperPSP-ENG-118BL](//jdmuscleusa.com/cdn/shop/products/perrin-performance-02-14-wrx-04-21-sti-alternator-pulley-blue-also-fits-impreza-1993-2016-forester-1998-2010-outback-2000-2009-legacy-2000-2009-psp-eng-118bl-4036182.jpg?v=1770334521&width=220)
Up to $9.15 offPerrin Performance Alternator Pulley Blue | Also Fits Impreza 1993-2016 / Forester 1998-2010 / Outback 2000-2009 / Legacy 2000-2009 | PSP-ENG-118BL
Fits: 02-14 WRX, 04-21 STI
Regular price $51.85Sale price $51.85 Regular priceUnit price per$61.00
![COBB [02 - 07 WRX, 04 - 21 STI, 06 - 08 FXT] LF Bypass Valve | 712665 - JDMuscleBlow Off Valvescobb712665](http://jdmuscleusa.com/cdn/shop/products/cobb-02-07-wrx-04-21-sti-06-08-fxt-lf-bypass-valve-712665-7110805.jpg?v=1770336431&width=220)
![COBB [02 - 07 WRX, 04 - 21 STI, 06 - 08 FXT] LF Bypass Valve | 712665 - JDMuscleBlow Off Valvescobb712665](http://jdmuscleusa.com/cdn/shop/products/cobb-02-07-wrx-04-21-sti-06-08-fxt-lf-bypass-valve-712665-1547680.jpg?v=1770336431&width=220)
![COBB [02 - 05 WRX] V3 AccessPORT | AP3 - SUB - 001 - JDMusclePlug and Play Engine ManagementcobbAP3-SUB-001](http://jdmuscleusa.com/cdn/shop/products/cobb-02-05-wrx-v3-accessport-ap3-sub-001-9451861.jpg?v=1770336568&width=220)
![COBB [02 - 05 WRX] V3 AccessPORT | AP3 - SUB - 001 - JDMusclePlug and Play Engine ManagementcobbAP3-SUB-001](http://jdmuscleusa.com/cdn/shop/products/cobb-02-05-wrx-v3-accessport-ap3-sub-001-5515223.jpg?v=1770336569&width=220)
![Radium Engineering [02 - 14 WRX/STI] Top Feed Fuel Rails Black | 20 - 0567 - 02 - JDMuscleFuel Railsrad20-0567-02](http://jdmuscleusa.com/cdn/shop/files/radium-engineering-02-14-wrxsti-top-feed-fuel-rails-black-20-0567-02-7682151.jpg?v=1770327979&width=220)
![Radium Engineering [02 - 14 WRX/STI] Top Feed Fuel Rails Black | 20 - 0567 - 02 - JDMuscleFuel Railsrad20-0567-02](http://jdmuscleusa.com/cdn/shop/files/radium-engineering-02-14-wrxsti-top-feed-fuel-rails-black-20-0567-02-8318867.jpg?v=1770327980&width=220)
![Perrin Performance [02 - 14 WRX, 04 - 21 STI] Alternator Pulley Blue | Also Fits Impreza 1993 - 2016 / Forester 1998 - 2010 / Outback 2000 - 2009 / Legacy 2000 - 2009 | PSP - ENG - 118BL - JDMusclePulleysperPSP-ENG-118BL](http://jdmuscleusa.com/cdn/shop/products/perrin-performance-02-14-wrx-04-21-sti-alternator-pulley-blue-also-fits-impreza-1993-2016-forester-1998-2010-outback-2000-2009-legacy-2000-2009-psp-eng-118bl-9461788.jpg?v=1770334521&width=220)
![Perrin Performance [02 - 14 WRX, 04 - 21 STI] Alternator Pulley Blue | Also Fits Impreza 1993 - 2016 / Forester 1998 - 2010 / Outback 2000 - 2009 / Legacy 2000 - 2009 | PSP - ENG - 118BL - JDMusclePulleysperPSP-ENG-118BL](http://jdmuscleusa.com/cdn/shop/products/perrin-performance-02-14-wrx-04-21-sti-alternator-pulley-blue-also-fits-impreza-1993-2016-forester-1998-2010-outback-2000-2009-legacy-2000-2009-psp-eng-118bl-4036182.jpg?v=1770334521&width=220)