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 StockWalbro 450lph In-Tank Fuel Pump High Pressure Version | F90000274 - Universal
Regular price From $144.50Sale price From $144.50 Regular priceUnit price per$0.00 -
Grimmspeed 02-07 WRX / 04-21 STI / 04-08 FXT Top Mount Intercooler Y-Pipe Kit Black | 090096
Regular price $245.00Sale price $245.00 Regular priceUnit price per$245.00 -
![Invidia [08-14 WRX/STI Hatchback] N1 Street Burnt Titanium Tip Cat Back Exhaust | HS08SW5GTT](//jdmuscleusa.com/cdn/shop/products/invidia-n1-street-burnt-titanium-tip-cat-back-exhaust-subaru-wrx-sti-2008-2014-hatchback-hs08sw5gtt-cat-back-exhaust-system-invidia-invhs08sw5gtt.jpg?v=1614516948&width=220)
Up to $445.84 off
In StockInvidia N1 Street Burnt Titanium Tip Cat Back Exhaust | HS08SW5GTT
Fits: 08-14 WRX/STI Hatchback
Only 6 leftRegular price $983.00Sale price $983.00 Regular priceUnit price per$1,428.84 -
Up to $29.85 offPerrin 08-21 STI Electronic Boost Control Solenoid | ASM-TAC-731
Regular price $169.15Sale price $169.15 Regular priceUnit price per$199.00 -
Up to $15 off
In StockAEM Fuel Pump 340lph - Universal
Regular price $117.95Sale price $117.95 Regular priceUnit price per$132.95 -
Subaru USDM Thermostat Gasket | 21236aa010
Fits: 02-14 WRX, 04-21 STI
Regular price $3.75Sale price $3.75 Regular priceUnit price per$3.75 -
![Moroso [02-07 WRX, 04-19 STI, 04-08 FXT] Aluminum Coolant Expansion Tank - JDMuscleOverflow / Expansion Tanksmor63784](//jdmuscleusa.com/cdn/shop/products/moroso-02-07-wrx-04-19-sti-04-08-fxt-aluminum-coolant-expansion-tank-8680274.jpg?v=1781013312&width=220)
In StockMoroso Aluminum Coolant Expansion Tank
Fits: 02-07 WRX, 04-19 STI, 04-08 FXT
Only 9 leftRegular price $220.99Sale price $220.99 Regular priceUnit price per$220.99 -
Up to $21.05 off
In StockMishimoto Ignition Coil Set - 4-Pack for Improved Engine Performance
Fits: 04-10 WRX/STI
Only 3 leftRegular price $205.95Sale price $205.95 Regular priceUnit price per$227.00 -
In StockDeatschwerks 1000cc Bosch EV14 Fuel Injectors
Fits: 02-14 WRX, 07-21 STI, 07-12 LGT
Only 10 leftRegular price $469.00Sale price $469.00 Regular priceUnit price per$469.00 -
In StockOVERTAKE TMIC Silicone Coupler Kit - 2004-2021 STI, 2002-2007 WRX, 2004-2008 Forester XT w/ STI Style TMIC
Regular price $88.00Sale price $88.00 Regular priceUnit price per$88.00 -
![Cobb [Subaru] Silicone Exhaust Hanger 12mm x 35mm - JDMuscleExhaust HangerscobbUNI-001-272](//jdmuscleusa.com/cdn/shop/files/cobb-subaru-silicone-exhaust-hanger-12mm-x-35mm-3590037.jpg?v=1770322211&width=220)
In StockCobb Silicone Exhaust Hanger 12mm x 35mm
Fits: Subaru
Regular price $20.00Sale price $20.00 Regular priceUnit price per$20.00 -
![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 16 leftRegular price $485.00Sale price $485.00 Regular priceUnit price per$509.00 -
![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 $28.77 offTorque Solution Oil Fill Tube Relocation
Fits: 08-14 WRX, 08-21 STI
Regular price $149.00Sale price $149.00 Regular priceUnit price per$177.77 -
![Invidia [08-14 WRX Sedan / 11-14 STI Sedan] N1 Cat Back Exhaust Single Tip | HS08SW4GTP](//jdmuscleusa.com/cdn/shop/products/invidia-n1-cat-back-exhaust-single-tip-subaru-wrx-sedan-2008-2014-sti-sedan-2011-2014-hs08sw4gtp-cat-back-exhaust-system-invidia-invhs08sw4gtp.jpg?v=1614517089&width=220)
Up to $445.84 off
In StockInvidia N1 Cat Back Exhaust Single Tip | HS08SW4GTP
Fits: 08-14 WRX Sedan / 11-14 STI Sedan
Only 6 leftRegular price $983.00Sale price $983.00 Regular priceUnit price per$1,428.84 -
![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 off
In StockTomei Poncam Camshafts | TOMTA301A-SB02C
Fits: 08-21 STI / 10-12 Legacy GT
Only 4 leftRegular 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 1 leftRegular price $376.74Sale price $376.74 Regular priceUnit price per$405.09
![Invidia [08-14 WRX/STI Hatchback] N1 Street Burnt Titanium Tip Cat Back Exhaust | HS08SW5GTT](http://jdmuscleusa.com/cdn/shop/products/invidia-n1-street-burnt-titanium-tip-cat-back-exhaust-subaru-wrx-sti-2008-2014-hatchback-hs08sw5gtt-cat-back-exhaust-system-invidia-invhs08sw5gtt.jpg?v=1614516948&width=220)
![Moroso [02-07 WRX, 04-19 STI, 04-08 FXT] Aluminum Coolant Expansion Tank - JDMuscleOverflow / Expansion Tanksmor63784](http://jdmuscleusa.com/cdn/shop/products/moroso-02-07-wrx-04-19-sti-04-08-fxt-aluminum-coolant-expansion-tank-8680274.jpg?v=1781013312&width=220)
![Cobb [Subaru] Silicone Exhaust Hanger 12mm x 35mm - JDMuscleExhaust HangerscobbUNI-001-272](http://jdmuscleusa.com/cdn/shop/files/cobb-subaru-silicone-exhaust-hanger-12mm-x-35mm-3590037.jpg?v=1770322211&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-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)
![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)
![Invidia [08-14 WRX Sedan / 11-14 STI Sedan] N1 Cat Back Exhaust Single Tip | HS08SW4GTP](http://jdmuscleusa.com/cdn/shop/products/invidia-n1-cat-back-exhaust-single-tip-subaru-wrx-sedan-2008-2014-sti-sedan-2011-2014-hs08sw4gtp-cat-back-exhaust-system-invidia-invhs08sw4gtp.jpg?v=1614517089&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)
