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 $20 off
In StockTomei High Performance Valve Spring Set Turbo Models
Fits: 02-14 WRX, 04-21 STI, 05-12 LGT, 04-13 FXT
Only 5 leftRegular price $180.00Sale price $180.00 Regular priceUnit price per$200.00 -
![Gates [04 - 14 WRX, 04 - 21 STI] Racing Timing Belt Kit | TCK328RB - JDMuscleTiming Belt ComponentsTCK328RB](//jdmuscleusa.com/cdn/shop/files/gates-04-14-wrx-04-21-sti-racing-timing-belt-kit-tck328rb-4786491.jpg?v=1770327639&width=220)
Up to $1,363.03 off
In StockGates Racing Timing Belt Kit | TCK328RB
Fits: 04-14 WRX, 04-21 STI
Only 4 leftRegular price $470.00Sale price $470.00 Regular priceUnit price per$1,833.03 -
![Cusco [02 - 14 WRX, 04 - 21 STI, 05 - 09 LGT] Aluminum Pulley Set | 6A1 - 733 - A - JDMusclePulleyscus6A1-733-A](//jdmuscleusa.com/cdn/shop/files/cusco-02-14-wrx-04-21-sti-05-09-lgt-aluminum-pulley-set-6a1-733-a-6902588.jpg?v=1770327688&width=220)
![Cusco [02 - 14 WRX, 04 - 21 STI, 05 - 09 LGT] Aluminum Pulley Set | 6A1 - 733 - A - JDMusclePulleyscus6A1-733-A](//jdmuscleusa.com/cdn/shop/files/cusco-02-14-wrx-04-21-sti-05-09-lgt-aluminum-pulley-set-6a1-733-a-2260376.jpg?v=1770327688&width=220)
Up to $54 offCusco Aluminum Pulley Set | 6A1-733-A
Fits: 02-14 WRX, 04-21 STI, 05-09 LGT
Regular price $486.00Sale price $486.00 Regular priceUnit price per$540.00 -
![Nameless Performance [02 - 07 WRX, 02 - 21 STI, 02 - 07 Forester XT] Bypass Valve | SUBPV02STI - 02WRX - 04FXT - JDMuscleValvesSUBPV02STI-02WRX-04FXT](//jdmuscleusa.com/cdn/shop/files/nameless-performance-02-07-wrx-02-21-sti-02-07-forester-xt-bypass-valve-subpv02sti-02wrx-04fxt-1669663.jpg?v=1770327869&width=220)
![Nameless Performance [02 - 07 WRX, 02 - 21 STI, 02 - 07 Forester XT] Bypass Valve | SUBPV02STI - 02WRX - 04FXT - JDMuscleValvesSUBPV02STI-02WRX-04FXT](//jdmuscleusa.com/cdn/shop/files/nameless-performance-02-07-wrx-02-21-sti-02-07-forester-xt-bypass-valve-subpv02sti-02wrx-04fxt-2634892.jpg?v=1770327869&width=220)
Nameless Performance Bypass Valve
Fits: 02-07 WRX, 02-21 STI, 02-07 Forester XT
Regular price $460.00Sale price $460.00 Regular priceUnit price per$314.00 -
![Torque Solution [02 - 07 WRX, 04 - 21 STI, 04 - 08 FXT] 3 Inch Non Recirculating Style Turbo Inlet Hose Black | TS - SU - 565 - NR - JDMuscleTurbo Inlet Hoses and PipesTS-SU-565-NR](//jdmuscleusa.com/cdn/shop/files/torque-solution-02-07-wrx-04-21-sti-04-08-fxt-3-inch-non-recirculating-style-turbo-inlet-hose-black-ts-su-565-nr-8532909.jpg?v=1770327911&width=220)
![Torque Solution [02 - 07 WRX, 04 - 21 STI, 04 - 08 FXT] 3 Inch Non Recirculating Style Turbo Inlet Hose Black | TS - SU - 565 - NR - JDMuscleTurbo Inlet Hoses and PipesTS-SU-565-NR](//jdmuscleusa.com/cdn/shop/files/torque-solution-02-07-wrx-04-21-sti-04-08-fxt-3-inch-non-recirculating-style-turbo-inlet-hose-black-ts-su-565-nr-9811679.jpg?v=1770327911&width=220)
Up to $47.99 off
In StockTorque Solution 3 Inch Non Recirculating Style Turbo Inlet Hose Black | TS-SU-565-NR
Fits: 02-07 WRX, 04-21 STI, 04-08 FXT
Only 1 leftRegular price $252.00Sale price $252.00 Regular priceUnit price per$299.99 -
![IAG Performance [02 - 14 WRX / 04 - 21 STI / 05 - 09 LGT / 04 - 13 FXT] Street Series Oil Pan Silver | IAG - ENG - 2200SL - JDMuscleOil PansIAG-ENG-2200SL](//jdmuscleusa.com/cdn/shop/files/iag-performance-02-14-wrx-04-21-sti-05-09-lgt-04-13-fxt-street-series-oil-pan-silver-iag-eng-2200sl-7871498.jpg?v=1770327974&width=220)
![IAG Performance [02 - 14 WRX / 04 - 21 STI / 05 - 09 LGT / 04 - 13 FXT] Street Series Oil Pan Silver | IAG - ENG - 2200SL - JDMuscleOil PansIAG-ENG-2200SL](//jdmuscleusa.com/cdn/shop/files/iag-performance-02-14-wrx-04-21-sti-05-09-lgt-04-13-fxt-street-series-oil-pan-silver-iag-eng-2200sl-8214944.jpg?v=1770327974&width=220)
In StockIAG Performance Street Series Oil Pan Silver
Fits: 02-14 WRX, 04-21 STI, 05-09 LGT, 04-13 FXT
Only 1 leftRegular price $529.99Sale price $529.99 Regular priceUnit price per$529.99 -
IAG Performance Blow Off Valve Adapter
Fits: 02-07 WRX, 04-21 STI
Regular price $49.99Sale price $49.99 Regular priceUnit price per$49.99 -
Cobb Tuning 4 Bar MAP Sensor - Sensor Only
Fits: 02-14 WRX, 04-21 STI, 05-08 Forester XT
Regular price $197.00Sale price $197.00 Regular priceUnit price per$197.00 -
In StockIAG Timing Belt Kit with IAG Red Racing Belt, Timing Guide, Adjustable Idlers & Tensioner
Fits: 02-14 WRX, 04-21 STI, 05-12 LGT, 04-13 FXT
Only 1 leftRegular price $699.99Sale price $699.99 Regular priceUnit price per$699.99 -
COBB 3in Cat-Back Exhaust Replacement Hardware Kit - Gasket and Bolts
Fits: 02-07 WRX, 04-07 STI
Regular price $29.00Sale price $29.00 Regular priceUnit price per$29.00 -
COBB 3-Inch 2-Bolt Exhaust Gasket
Fits: Universal
Regular price $25.00Sale price $25.00 Regular priceUnit price per$25.00 -
In StockIAG V2 Alternator Relocation Kit for Reversed Intake Manifold for Multiple Subaru Fitments | IAG-ENG-5211
Only 2 leftRegular price $249.99Sale price $249.99 Regular priceUnit price per$249.99 -
![IAG [02 - 14 WRX, 04 - 21 STI, 05 - 09 LGT, 04 - 08 FXT] V2 Timing Belt Guide | IAG - ENG - 5101BK - JDMuscleTiming Belt ComponentsIAG-ENG-5101BK](//jdmuscleusa.com/cdn/shop/products/iag-02-14-wrx-04-21-sti-05-09-lgt-04-08-fxt-v2-timing-belt-guide-iag-eng-5101bk-9536642.jpg?v=1770331224&width=220)
![IAG [02 - 14 WRX, 04 - 21 STI, 05 - 09 LGT, 04 - 08 FXT] V2 Timing Belt Guide | IAG - ENG - 5101BK - JDMuscleTiming Belt ComponentsIAG-ENG-5101BK](//jdmuscleusa.com/cdn/shop/products/iag-02-14-wrx-04-21-sti-05-09-lgt-04-08-fxt-v2-timing-belt-guide-iag-eng-5101bk-6320311.jpg?v=1770331224&width=220)
In StockIAG V2 Timing Belt Guide
Fits: 02-14 WRX, 04-21 STI, 05-09 LGT, 04-08 FXT
Only 1 leftRegular price $59.99Sale price $59.99 Regular priceUnit price per$59.99 -
Up to $45.50 off
In StockTurbosmart 02-07 WRX / 04-21 STI / 06-08 FXT Dual Port Blow Off Valve Black | TS-0205-1016
Only 8 leftRegular price $409.49Sale price $409.49 Regular priceUnit price per$454.99 -
In StockCobb Tuning Delrin Oil Cap
Fits: 02-26 WRX/STI, 13-26 BRZ, 04-18 Forester XT, 05-12 Legacy GT/20-25 Legacy XT, 05-09 & 20-26 Outback XT, 19-26 Ascent, 13-16 FR-S, 17-21 GT86, 22-26 GR86
Only 5 leftRegular price $97.00Sale price $97.00 Regular priceUnit price per$97.00 -
![Cobb [02 - 07 WRX/STI, 04 - 08 Forester XT] GESi Catted 3 inch Downpipe - JDMuscleFront Pipes and Downpipes / J - Pipescobb512210](//jdmuscleusa.com/cdn/shop/products/cobb-02-07-wrxsti-04-08-forester-xt-gesi-catted-3-inch-downpipe-4117948.jpg?v=1775590691&width=220)
![Cobb [02 - 07 WRX/STI, 04 - 08 Forester XT] GESi Catted 3 inch Downpipe - JDMuscleFront Pipes and Downpipes / J - Pipescobb512210](//jdmuscleusa.com/cdn/shop/products/cobb-02-07-wrxsti-04-08-forester-xt-gesi-catted-3-inch-downpipe-3719673.jpg?v=1775590691&width=220)
Cobb Tuning GESi Catted 3-inch Downpipe
Fits: 02-07 WRX/STI, 04-08 Forester XT
Regular price $995.00Sale price $995.00 Regular priceUnit price per$995.00
![Gates [04 - 14 WRX, 04 - 21 STI] Racing Timing Belt Kit | TCK328RB - JDMuscleTiming Belt ComponentsTCK328RB](http://jdmuscleusa.com/cdn/shop/files/gates-04-14-wrx-04-21-sti-racing-timing-belt-kit-tck328rb-4786491.jpg?v=1770327639&width=220)
![Cusco [02 - 14 WRX, 04 - 21 STI, 05 - 09 LGT] Aluminum Pulley Set | 6A1 - 733 - A - JDMusclePulleyscus6A1-733-A](http://jdmuscleusa.com/cdn/shop/files/cusco-02-14-wrx-04-21-sti-05-09-lgt-aluminum-pulley-set-6a1-733-a-6902588.jpg?v=1770327688&width=220)
![Cusco [02 - 14 WRX, 04 - 21 STI, 05 - 09 LGT] Aluminum Pulley Set | 6A1 - 733 - A - JDMusclePulleyscus6A1-733-A](http://jdmuscleusa.com/cdn/shop/files/cusco-02-14-wrx-04-21-sti-05-09-lgt-aluminum-pulley-set-6a1-733-a-2260376.jpg?v=1770327688&width=220)
![Nameless Performance [02 - 07 WRX, 02 - 21 STI, 02 - 07 Forester XT] Bypass Valve | SUBPV02STI - 02WRX - 04FXT - JDMuscleValvesSUBPV02STI-02WRX-04FXT](http://jdmuscleusa.com/cdn/shop/files/nameless-performance-02-07-wrx-02-21-sti-02-07-forester-xt-bypass-valve-subpv02sti-02wrx-04fxt-1669663.jpg?v=1770327869&width=220)
![Nameless Performance [02 - 07 WRX, 02 - 21 STI, 02 - 07 Forester XT] Bypass Valve | SUBPV02STI - 02WRX - 04FXT - JDMuscleValvesSUBPV02STI-02WRX-04FXT](http://jdmuscleusa.com/cdn/shop/files/nameless-performance-02-07-wrx-02-21-sti-02-07-forester-xt-bypass-valve-subpv02sti-02wrx-04fxt-2634892.jpg?v=1770327869&width=220)
![Torque Solution [02 - 07 WRX, 04 - 21 STI, 04 - 08 FXT] 3 Inch Non Recirculating Style Turbo Inlet Hose Black | TS - SU - 565 - NR - JDMuscleTurbo Inlet Hoses and PipesTS-SU-565-NR](http://jdmuscleusa.com/cdn/shop/files/torque-solution-02-07-wrx-04-21-sti-04-08-fxt-3-inch-non-recirculating-style-turbo-inlet-hose-black-ts-su-565-nr-8532909.jpg?v=1770327911&width=220)
![Torque Solution [02 - 07 WRX, 04 - 21 STI, 04 - 08 FXT] 3 Inch Non Recirculating Style Turbo Inlet Hose Black | TS - SU - 565 - NR - JDMuscleTurbo Inlet Hoses and PipesTS-SU-565-NR](http://jdmuscleusa.com/cdn/shop/files/torque-solution-02-07-wrx-04-21-sti-04-08-fxt-3-inch-non-recirculating-style-turbo-inlet-hose-black-ts-su-565-nr-9811679.jpg?v=1770327911&width=220)
![IAG Performance [02 - 14 WRX / 04 - 21 STI / 05 - 09 LGT / 04 - 13 FXT] Street Series Oil Pan Silver | IAG - ENG - 2200SL - JDMuscleOil PansIAG-ENG-2200SL](http://jdmuscleusa.com/cdn/shop/files/iag-performance-02-14-wrx-04-21-sti-05-09-lgt-04-13-fxt-street-series-oil-pan-silver-iag-eng-2200sl-7871498.jpg?v=1770327974&width=220)
![IAG Performance [02 - 14 WRX / 04 - 21 STI / 05 - 09 LGT / 04 - 13 FXT] Street Series Oil Pan Silver | IAG - ENG - 2200SL - JDMuscleOil PansIAG-ENG-2200SL](http://jdmuscleusa.com/cdn/shop/files/iag-performance-02-14-wrx-04-21-sti-05-09-lgt-04-13-fxt-street-series-oil-pan-silver-iag-eng-2200sl-8214944.jpg?v=1770327974&width=220)
![IAG [02 - 14 WRX, 04 - 21 STI, 05 - 09 LGT, 04 - 08 FXT] V2 Timing Belt Guide | IAG - ENG - 5101BK - JDMuscleTiming Belt ComponentsIAG-ENG-5101BK](http://jdmuscleusa.com/cdn/shop/products/iag-02-14-wrx-04-21-sti-05-09-lgt-04-08-fxt-v2-timing-belt-guide-iag-eng-5101bk-9536642.jpg?v=1770331224&width=220)
![IAG [02 - 14 WRX, 04 - 21 STI, 05 - 09 LGT, 04 - 08 FXT] V2 Timing Belt Guide | IAG - ENG - 5101BK - JDMuscleTiming Belt ComponentsIAG-ENG-5101BK](http://jdmuscleusa.com/cdn/shop/products/iag-02-14-wrx-04-21-sti-05-09-lgt-04-08-fxt-v2-timing-belt-guide-iag-eng-5101bk-6320311.jpg?v=1770331224&width=220)
![Cobb [02 - 07 WRX/STI, 04 - 08 Forester XT] GESi Catted 3 inch Downpipe - JDMuscleFront Pipes and Downpipes / J - Pipescobb512210](http://jdmuscleusa.com/cdn/shop/products/cobb-02-07-wrxsti-04-08-forester-xt-gesi-catted-3-inch-downpipe-4117948.jpg?v=1775590691&width=220)
![Cobb [02 - 07 WRX/STI, 04 - 08 Forester XT] GESi Catted 3 inch Downpipe - JDMuscleFront Pipes and Downpipes / J - Pipescobb512210](http://jdmuscleusa.com/cdn/shop/products/cobb-02-07-wrxsti-04-08-forester-xt-gesi-catted-3-inch-downpipe-3719673.jpg?v=1775590691&width=220)