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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Up to $18 off
In StockAEM Boost Control Solenoid - Universal | 30-2400
Only 5 leftRegular price $143.95Sale price $143.95 Regular priceUnit price per$161.95 -
Up to $91 off
In StockAEM V2 5 Gallon Water/Methanol Injection Kit | Internal Map - Universal | 30-3301
Only 4 leftRegular price $727.95Sale price $727.95 Regular priceUnit price per$818.95 -
Up to $44 off
In StockAEM Ethanol Content Flex Fuel Sensor w/ -6AN fittings Kit - Universal | 30-2201
Only 4 leftRegular price $349.95Sale price $349.95 Regular priceUnit price per$393.95 -
![Cobb [WRX/LGT/FXT] 4 Bar MAP Sensor Kit (Plastic Manifold) - JDMusclePlug and Play Engine ManagementcobbA22700](//jdmuscleusa.com/cdn/shop/files/cobb-wrxlgtfxt-4-bar-map-sensor-kit-plastic-manifold-8725972.jpg?v=1770321308&width=220)
![Cobb [WRX/LGT/FXT] 4 Bar MAP Sensor Kit (Plastic Manifold) - JDMusclePlug and Play Engine ManagementcobbA22700](//jdmuscleusa.com/cdn/shop/files/cobb-wrxlgtfxt-4-bar-map-sensor-kit-plastic-manifold-8846893.jpg?v=1770321308&width=220)
In StockCobb Tuning 4 Bar MAP Sensor Kit - Plastic Manifold
Fits: 08-14 WRX, 09-10 Impreza 2.5 GT, 09-13 Forester XT, 05-12 Legacy GT, 05-09 Outback XT
Only 11 leftRegular price $236.00Sale price $236.00 Regular priceUnit price per$236.00 -
![Cobb [02 - 05 WRX] Stage 2+ Power Package w/V3 - JDMuscleEngine Package Dealscobb612X02P-BK](//jdmuscleusa.com/cdn/shop/files/cobb-02-05-wrx-stage-2-power-package-wv3-2662813.webp?v=1770321312&width=220)
![Cobb [02 - 05 WRX] Stage 2+ Power Package w/V3 - JDMuscleEngine Package Dealscobb612X02P-BK](//jdmuscleusa.com/cdn/shop/files/cobb-02-05-wrx-stage-2-power-package-wv3-9454268.webp?v=1770321312&width=220)
Up to $120 offCobb Tuning Stage 2+ Power Package with Accessport V3 - Black
Fits: 02-05 WRX
Regular price $2,905.00Sale price $2,905.00 Regular priceUnit price per$3,025.00 -
![Cobb [WRX/LGT/FXT] 4 Bar MAP Sensor - Plastic Manifold - Sensor Only - Req. 1/8in. NPT Adapter - JDMusclePlug and Play Engine ManagementcobbA22100](//jdmuscleusa.com/cdn/shop/files/cobb-wrxlgtfxt-4-bar-map-sensor-plastic-manifold-sensor-only-req-18in-npt-adapter-9928454.jpg?v=1770321308&width=220)
![Cobb [WRX/LGT/FXT] 4 Bar MAP Sensor - Plastic Manifold - Sensor Only - Req. 1/8in. NPT Adapter - JDMusclePlug and Play Engine ManagementcobbA22100](//jdmuscleusa.com/cdn/shop/files/cobb-wrxlgtfxt-4-bar-map-sensor-plastic-manifold-sensor-only-req-18in-npt-adapter-4836767.jpg?v=1770321308&width=220)
In StockCobb Tuning 4 Bar MAP Sensor - Plastic Manifold - Sensor Only
Fits: 08-14 WRX, 09-10 Impreza 2.5 GT, 09-13 Forester XT, 05-12 Legacy GT, 05-09 Outback XT
Only 6 leftRegular price $207.00Sale price $207.00 Regular priceUnit price per$207.00 -
![Cobb [02 - 07 WRX] 5MT Stg 1+ Drivetrain Pkg w/Tall Shifter Weighted Knob - White - JDMuscleEngine Package Dealscobb212X11P-WK-W](//jdmuscleusa.com/cdn/shop/files/cobb-02-07-wrx-5mt-stg-1-drivetrain-pkg-wtall-shifter-weighted-knob-white-5758190.webp?v=1770321314&width=220)
![Cobb [02 - 07 WRX] 5MT Stg 1+ Drivetrain Pkg w/Tall Shifter Weighted Knob - White - JDMuscleEngine Package Dealscobb212X11P-WK-W](//jdmuscleusa.com/cdn/shop/files/cobb-02-07-wrx-5mt-stg-1-drivetrain-pkg-wtall-shifter-weighted-knob-white-1295963.webp?v=1770321314&width=220)
In StockCobb Tuning Stage 1+ Drivetrain Package with Tall Wide Barrel Shifter - Weighted Knob - White
Fits: 02-07 WRX 5MT
Only 4 leftRegular price $320.00Sale price $320.00 Regular priceUnit price per$320.00 -
![IAG [18 - 19 STI, 18 STi Type RA] Stage 1 Cylinder Head Package - JDMuscleCylinder Heads & Valvetrain ComponentsIAG-ENG-H550NENo Cams / Lifters Included](//jdmuscleusa.com/cdn/shop/files/iag-18-19-sti-18-sti-type-ra-stage-1-cylinder-head-package-9482150.jpg?v=1772964128&width=220)
![IAG [18 - 19 STI, 18 STi Type RA] Stage 1 Cylinder Head Package - JDMuscleCylinder Heads & Valvetrain ComponentsIAG-ENG-H550NENo Cams / Lifters Included](//jdmuscleusa.com/cdn/shop/products/iag-18-19-sti-18-sti-type-ra-stage-1-cylinder-head-package-6338798.jpg?v=1772964129&width=220)
Up to $460 off
In StockIAG Stage 1 Cylinder Head Package
Fits: 18-19 STI, 18 STi Type RA
Only 1 leftRegular price From $4,599.99Sale price From $4,599.99 Regular priceUnit price per$4,599.99 -
In StockIAG Performance Stage 2.5 International Hybrid EJ25 Subaru Closed Deck Short Block For EJ20 Heads
Only 1 leftRegular price $5,499.99Sale price $5,499.99 Regular priceUnit price per$4,899.99 -
TR Subaru Single Scroll Unequal Length Exhaust Manifold with 3 bolts Up-pipe Stock Replacement for EJ20/EJ25
Regular price $915.00Sale price $915.00 Regular priceUnit price per$915.00 -
TR Twin Scroll Equal Length Exhaust Manifold w/ Up-pipe for WRX 1994-2014 / STi 1994-2017 / Forester 1997-2013 / Liberty 2004-2009 | TR-ES1002
Regular price $990.00Sale price $990.00 Regular priceUnit price per$860.00 -
In StockTR Equal Length Exhaust Manifold w/ Up-pipe for Subaru
Only 5 leftRegular price $915.00Sale price $915.00 Regular priceUnit price per$915.00 -
In StockTR Gen 2 Twin Scroll Equal Length Exhaust Manifold with 3 Bolts Up-Pipe for EJ20/25 (TR-ES1002)
Regular price $915.00Sale price $915.00 Regular priceUnit price per$915.00 -
In StockTR Subaru WRX/STI Twin Scroll High Flow Catless Downpipe for 2008-2014 WRX and 2008-2021 STI (TR-ES1006)
Regular price $720.00Sale price $720.00 Regular priceUnit price per$720.00 -
In StockTR Silicone Turbo Inlet Hose for Subaru WRX 02-07 / STi 04-07
Only 14 leftRegular price $235.00Sale price $235.00 Regular priceUnit price per$235.00 -
In StockTR Subaru 2-Bolt Up-Pipe
Only 2 leftRegular price $350.00Sale price $350.00 Regular priceUnit price per$350.00
![Cobb [WRX/LGT/FXT] 4 Bar MAP Sensor Kit (Plastic Manifold) - JDMusclePlug and Play Engine ManagementcobbA22700](http://jdmuscleusa.com/cdn/shop/files/cobb-wrxlgtfxt-4-bar-map-sensor-kit-plastic-manifold-8725972.jpg?v=1770321308&width=220)
![Cobb [WRX/LGT/FXT] 4 Bar MAP Sensor Kit (Plastic Manifold) - JDMusclePlug and Play Engine ManagementcobbA22700](http://jdmuscleusa.com/cdn/shop/files/cobb-wrxlgtfxt-4-bar-map-sensor-kit-plastic-manifold-8846893.jpg?v=1770321308&width=220)
![Cobb [02 - 05 WRX] Stage 2+ Power Package w/V3 - JDMuscleEngine Package Dealscobb612X02P-BK](http://jdmuscleusa.com/cdn/shop/files/cobb-02-05-wrx-stage-2-power-package-wv3-2662813.webp?v=1770321312&width=220)
![Cobb [02 - 05 WRX] Stage 2+ Power Package w/V3 - JDMuscleEngine Package Dealscobb612X02P-BK](http://jdmuscleusa.com/cdn/shop/files/cobb-02-05-wrx-stage-2-power-package-wv3-9454268.webp?v=1770321312&width=220)
![Cobb [WRX/LGT/FXT] 4 Bar MAP Sensor - Plastic Manifold - Sensor Only - Req. 1/8in. NPT Adapter - JDMusclePlug and Play Engine ManagementcobbA22100](http://jdmuscleusa.com/cdn/shop/files/cobb-wrxlgtfxt-4-bar-map-sensor-plastic-manifold-sensor-only-req-18in-npt-adapter-9928454.jpg?v=1770321308&width=220)
![Cobb [WRX/LGT/FXT] 4 Bar MAP Sensor - Plastic Manifold - Sensor Only - Req. 1/8in. NPT Adapter - JDMusclePlug and Play Engine ManagementcobbA22100](http://jdmuscleusa.com/cdn/shop/files/cobb-wrxlgtfxt-4-bar-map-sensor-plastic-manifold-sensor-only-req-18in-npt-adapter-4836767.jpg?v=1770321308&width=220)
![Cobb [02 - 07 WRX] 5MT Stg 1+ Drivetrain Pkg w/Tall Shifter Weighted Knob - White - JDMuscleEngine Package Dealscobb212X11P-WK-W](http://jdmuscleusa.com/cdn/shop/files/cobb-02-07-wrx-5mt-stg-1-drivetrain-pkg-wtall-shifter-weighted-knob-white-5758190.webp?v=1770321314&width=220)
![Cobb [02 - 07 WRX] 5MT Stg 1+ Drivetrain Pkg w/Tall Shifter Weighted Knob - White - JDMuscleEngine Package Dealscobb212X11P-WK-W](http://jdmuscleusa.com/cdn/shop/files/cobb-02-07-wrx-5mt-stg-1-drivetrain-pkg-wtall-shifter-weighted-knob-white-1295963.webp?v=1770321314&width=220)
![IAG [18 - 19 STI, 18 STi Type RA] Stage 1 Cylinder Head Package - JDMuscleCylinder Heads & Valvetrain ComponentsIAG-ENG-H550NENo Cams / Lifters Included](http://jdmuscleusa.com/cdn/shop/files/iag-18-19-sti-18-sti-type-ra-stage-1-cylinder-head-package-9482150.jpg?v=1772964128&width=220)
![IAG [18 - 19 STI, 18 STi Type RA] Stage 1 Cylinder Head Package - JDMuscleCylinder Heads & Valvetrain ComponentsIAG-ENG-H550NENo Cams / Lifters Included](http://jdmuscleusa.com/cdn/shop/products/iag-18-19-sti-18-sti-type-ra-stage-1-cylinder-head-package-6338798.jpg?v=1772964129&width=220)
