Optimize your Subaru STI 2008-2014 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.
2008-2014 Subaru WRX STI Engine Parts
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In StockDeatschWerks 65c Fuel Pump w/ Install Kit | dw9-652-1008
Fits: 08-14 WRX, 08-19 STI, 05-09 LGT/OBXT, 04-06 GTO
Only 9 leftRegular price $159.00Sale price $159.00 Regular priceUnit price per$159.00 -
![CSF [08 - 21 WRX/STI] 2 - Row 42mm Race - Spec All Aluminum Radiator - Black | 7095B - JDMuscleRadiatorscsf7095B](//jdmuscleusa.com/cdn/shop/files/csf-08-21-wrxsti-2-row-42mm-race-spec-all-aluminum-radiator-black-7095b-8634755.jpg?v=1770324975&width=220)
![CSF [08 - 21 WRX/STI] 2 - Row 42mm Race - Spec All Aluminum Radiator - Black | 7095B - JDMuscleRadiatorscsf7095B](//jdmuscleusa.com/cdn/shop/files/csf-08-21-wrxsti-2-row-42mm-race-spec-all-aluminum-radiator-black-7095b-6844231.jpg?v=1770324975&width=220)
Up to $24 off
In StockCSF 2-Row 42mm Race-Spec All Aluminum Radiator - Black | 7095B
Fits: 08-21 WRX/STI
Only 15 leftRegular price $485.00Sale price $485.00 Regular priceUnit price per$509.00 -
![Turbo XS [08-14 WRX/STI, 05-09 LGT] High Flow Catalytic Converter Pipe - JDMuscleFront Pipes and Downpipes / J-PipestxsWS08-CP-V2](//jdmuscleusa.com/cdn/shop/products/turbo-xs-08-14-wrxsti-05-09-lgt-high-flow-catalytic-converter-pipe-2003708.jpg?v=1789268228&width=220)
![Turbo XS [08-14 WRX/STI, 05-09 LGT] High Flow Catalytic Converter Pipe - JDMuscleFront Pipes and Downpipes / J-PipestxsWS08-CP-V2](//jdmuscleusa.com/cdn/shop/products/turbo-xs-08-14-wrxsti-05-09-lgt-high-flow-catalytic-converter-pipe-8592506.png?v=1789268229&width=220)
Up to $85.54 off
In StockTurbo XS High Flow Catalytic Converter Pipe
Fits: 08-14 WRX/STI, 05-09 LGT
Regular price $242.00Sale price $242.00 Regular priceUnit price per$327.54 -
![Torque Solution [08 - 14 WRX, 08 - 21 STI] Oil Fill Tube Relocation | TS - SU - 757 - JDMuscleOil Control DevicestqsTS-SU-757](//jdmuscleusa.com/cdn/shop/files/torque-solution-08-14-wrx-08-21-sti-oil-fill-tube-relocation-ts-su-757-7338747.jpg?v=1770325029&width=220)
![Torque Solution [08 - 14 WRX, 08 - 21 STI] Oil Fill Tube Relocation | TS - SU - 757 - JDMuscleOil Control DevicestqsTS-SU-757](//jdmuscleusa.com/cdn/shop/files/torque-solution-08-14-wrx-08-21-sti-oil-fill-tube-relocation-ts-su-757-9472488.jpg?v=1770325029&width=220)
Up to $17.77 off
In StockTorque Solution Oil Fill Tube Relocation
Fits: 08-14 WRX, 08-21 STI
Only 17 leftRegular price $160.00Sale price $160.00 Regular priceUnit price per$177.77 -
![Tomei [08-21 STI / 10-12 Legacy GT] Poncam Camshafts | TOMTA301A-SB02C - JDMuscleCamsTOMTA301A-SB02C](//jdmuscleusa.com/cdn/shop/products/tomei-08-21-sti-10-12-legacy-gt-poncam-camshafts-tomta301a-sb02c-5352335.jpg?v=1781014153&width=220)
Up to $88 offTomei Poncam Camshafts | TOMTA301A-SB02C
Fits: 08-21 STI / 10-12 Legacy GT
Regular price $792.00Sale price $792.00 Regular priceUnit price per$880.00 -
Up to $28.35 off
In StockCometic 08-21 STI Street Pro Gasket Kit | PRO2048C
Only 3 leftRegular price $376.74Sale price $376.74 Regular priceUnit price per$405.09 -
![Extreme Online Store [11 - 14 WRX/STI] Muffler Delete Axle Back Quad Exhaust - JDMuscleAxle Back ExhaustsEXT-MD042Anodized Silver](//jdmuscleusa.com/cdn/shop/files/extreme-online-store-11-14-wrxsti-muffler-delete-axle-back-quad-exhaust-3358239.png?v=1770326778&width=220)
![Extreme Online Store [11 - 14 WRX/STI] Muffler Delete Axle Back Quad Exhaust - JDMuscleAxle Back ExhaustsEXT-MD042Anodized Silver](//jdmuscleusa.com/cdn/shop/files/extreme-online-store-11-14-wrxsti-muffler-delete-axle-back-quad-exhaust-7766750.png?v=1770326778&width=220)
In StockEOS Muffler Delete Axle Back Quad Exhaust
Fits: 11-14 WRX/STI
Only 2 leftRegular price From $300.00Sale price From $300.00 Regular priceUnit price per$256.98 -
DELICIOUS TUNING 08+ SUBARU MAF EXTENSION | DT_MAF-V2_EXT
Regular price $35.00Sale price $35.00 Regular priceUnit price per$35.00 -
![Perrin [08 - 21 STI] Boost Solenoid Cover Hyper Pink | PSP - ENG - 161HP - JDMuscleBoost Control Solenoid CoversperPSP-ENG-161HP](//jdmuscleusa.com/cdn/shop/files/perrin-08-21-sti-boost-solenoid-cover-hyper-pink-psp-eng-161hp-9111797.jpg?v=1770327864&width=220)
![Perrin [08 - 21 STI] Boost Solenoid Cover Hyper Pink | PSP - ENG - 161HP - JDMuscleBoost Control Solenoid CoversperPSP-ENG-161HP](//jdmuscleusa.com/cdn/shop/files/perrin-08-21-sti-boost-solenoid-cover-hyper-pink-psp-eng-161hp-2631792.jpg?v=1770327865&width=220)
Up to $12 off
In StockPerrin Boost Solenoid Cover Hyper Pink | PSP-ENG-161HP
Fits: 08-21 STI
Only 4 leftRegular price $68.00Sale price $68.00 Regular priceUnit price per$80.00 -
In StockIAG Performance 02-14 WRX / 04-21 STI / 05-09 LGT / 04-13 FXT V2 Oil Pickup and Oil Control Baffle / Windage Tray Combo | IAG-ENG-2101
Only 1 leftRegular price $329.99Sale price $329.99 Regular priceUnit price per$329.99 -
In StockIAG Performance Replacement Blow Off Valve Elbow Black
Fits: 02-07 WRX, 04-21 STI
Only 1 leftRegular price $59.99Sale price $59.99 Regular priceUnit price per$59.99 -
Up to $9.15 off
In StockPerrin Alternator Pulley - Red
Fits: 06-14 WRX, 07-21 STI, 12-16 Impreza, 06-13 FXT, 05-09 Legacy
Only 1 leftRegular price $51.85Sale price $51.85 Regular priceUnit price per$61.00 -
![IAG Performance [02 - 14 WRX, 04 - 21 STI, 05 - 12 LGT, 04 - 13 FXT] 8mm Thick Phenolic Spacers | IAG - AFD - 3104 - JDMusclePhenolic Thermal Intake Manifold SpacersIAG-AFD-3104](//jdmuscleusa.com/cdn/shop/files/iag-performance-02-14-wrx-04-21-sti-05-12-lgt-04-13-fxt-8mm-thick-phenolic-spacers-iag-afd-3104-4678295.jpg?v=1770327978&width=220)
In StockIAG 8mm Thick Phenolic Spacers
Fits: 02-14 WRX, 04-21 STI, 05-12 LGT, 04-13 FXT
Only 1 leftRegular price $74.99Sale price $74.99 Regular priceUnit price per$74.99 -
In StockIAG 04-21 STI Big Bore 76mm Throttle Body w/ Electronics & Adapter Intake Manifolds | IAG-AFD-2027SL
Only 1 leftRegular price $414.99Sale price $414.99 Regular priceUnit price per$414.99 -
In StockIAG Subaru STI Big Bore 76mm Throttle Body w/ Electronics & Adapter Package Process West Intake Manifolds
Only 1 leftRegular price $414.99Sale price $414.99 Regular priceUnit price per$414.99 -
In StockIAG 02-14 WRX, 04-21 STI, 05-09 LGT, 04-13 FXT 550 Street Cylinder Heads Package | IAG-ENG-H550NE
Only 1 leftRegular price $3,399.99Sale price $3,399.99 Regular priceUnit price per$3,399.99
![CSF [08 - 21 WRX/STI] 2 - Row 42mm Race - Spec All Aluminum Radiator - Black | 7095B - JDMuscleRadiatorscsf7095B](http://jdmuscleusa.com/cdn/shop/files/csf-08-21-wrxsti-2-row-42mm-race-spec-all-aluminum-radiator-black-7095b-8634755.jpg?v=1770324975&width=220)
![CSF [08 - 21 WRX/STI] 2 - Row 42mm Race - Spec All Aluminum Radiator - Black | 7095B - JDMuscleRadiatorscsf7095B](http://jdmuscleusa.com/cdn/shop/files/csf-08-21-wrxsti-2-row-42mm-race-spec-all-aluminum-radiator-black-7095b-6844231.jpg?v=1770324975&width=220)
![Turbo XS [08-14 WRX/STI, 05-09 LGT] High Flow Catalytic Converter Pipe - JDMuscleFront Pipes and Downpipes / J-PipestxsWS08-CP-V2](http://jdmuscleusa.com/cdn/shop/products/turbo-xs-08-14-wrxsti-05-09-lgt-high-flow-catalytic-converter-pipe-2003708.jpg?v=1789268228&width=220)
![Turbo XS [08-14 WRX/STI, 05-09 LGT] High Flow Catalytic Converter Pipe - JDMuscleFront Pipes and Downpipes / J-PipestxsWS08-CP-V2](http://jdmuscleusa.com/cdn/shop/products/turbo-xs-08-14-wrxsti-05-09-lgt-high-flow-catalytic-converter-pipe-8592506.png?v=1789268229&width=220)
![Torque Solution [08 - 14 WRX, 08 - 21 STI] Oil Fill Tube Relocation | TS - SU - 757 - JDMuscleOil Control DevicestqsTS-SU-757](http://jdmuscleusa.com/cdn/shop/files/torque-solution-08-14-wrx-08-21-sti-oil-fill-tube-relocation-ts-su-757-7338747.jpg?v=1770325029&width=220)
![Torque Solution [08 - 14 WRX, 08 - 21 STI] Oil Fill Tube Relocation | TS - SU - 757 - JDMuscleOil Control DevicestqsTS-SU-757](http://jdmuscleusa.com/cdn/shop/files/torque-solution-08-14-wrx-08-21-sti-oil-fill-tube-relocation-ts-su-757-9472488.jpg?v=1770325029&width=220)
![Tomei [08-21 STI / 10-12 Legacy GT] Poncam Camshafts | TOMTA301A-SB02C - JDMuscleCamsTOMTA301A-SB02C](http://jdmuscleusa.com/cdn/shop/products/tomei-08-21-sti-10-12-legacy-gt-poncam-camshafts-tomta301a-sb02c-5352335.jpg?v=1781014153&width=220)
![Extreme Online Store [11 - 14 WRX/STI] Muffler Delete Axle Back Quad Exhaust - JDMuscleAxle Back ExhaustsEXT-MD042Anodized Silver](http://jdmuscleusa.com/cdn/shop/files/extreme-online-store-11-14-wrxsti-muffler-delete-axle-back-quad-exhaust-3358239.png?v=1770326778&width=220)
![Extreme Online Store [11 - 14 WRX/STI] Muffler Delete Axle Back Quad Exhaust - JDMuscleAxle Back ExhaustsEXT-MD042Anodized Silver](http://jdmuscleusa.com/cdn/shop/files/extreme-online-store-11-14-wrxsti-muffler-delete-axle-back-quad-exhaust-7766750.png?v=1770326778&width=220)
![Perrin [08 - 21 STI] Boost Solenoid Cover Hyper Pink | PSP - ENG - 161HP - JDMuscleBoost Control Solenoid CoversperPSP-ENG-161HP](http://jdmuscleusa.com/cdn/shop/files/perrin-08-21-sti-boost-solenoid-cover-hyper-pink-psp-eng-161hp-9111797.jpg?v=1770327864&width=220)
![Perrin [08 - 21 STI] Boost Solenoid Cover Hyper Pink | PSP - ENG - 161HP - JDMuscleBoost Control Solenoid CoversperPSP-ENG-161HP](http://jdmuscleusa.com/cdn/shop/files/perrin-08-21-sti-boost-solenoid-cover-hyper-pink-psp-eng-161hp-2631792.jpg?v=1770327865&width=220)
![IAG Performance [02 - 14 WRX, 04 - 21 STI, 05 - 12 LGT, 04 - 13 FXT] 8mm Thick Phenolic Spacers | IAG - AFD - 3104 - JDMusclePhenolic Thermal Intake Manifold SpacersIAG-AFD-3104](http://jdmuscleusa.com/cdn/shop/files/iag-performance-02-14-wrx-04-21-sti-05-12-lgt-04-13-fxt-8mm-thick-phenolic-spacers-iag-afd-3104-4678295.jpg?v=1770327978&width=220)
