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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![AWE [11-21 WRX/STI Sedan] Track Edition Cat Back Exhaust Chrome Silver Quad Tips 102mm | 3020-42058](//jdmuscleusa.com/cdn/shop/products/awe-track-edition-cat-back-exhaust-subaru-wrx-sti-sedan-2011-2019-chrome-silver-quad-tips-102mm-3020-42058-cat-back-exhaust-system-awe-tuning-awe3020-42058.jpg?v=1614525828&width=220)
![AWE [11-21 WRX/STI Sedan] Track Edition Cat Back Exhaust Chrome Silver Quad Tips 102mm | 3020-42058](//jdmuscleusa.com/cdn/shop/products/awe-track-edition-cat-back-exhaust-subaru-wrx-sti-sedan-2011-2019-chrome-silver-quad-tips-102mm-3020-42058-cat-back-exhaust-system-awe-tuning-awe3020-42058-2.jpg?v=1614678397&width=220)
Up to $62.89 off
In StockAWE Track Edition Cat Back Exhaust Chrome Silver Quad Tips 102mm
Fits: 11-21 WRX/STI Sedan
Only 9 leftRegular price $1,195.00Sale price $1,195.00 Regular priceUnit price per$1,257.89 -
IAG Air / Oil Separator | AOS
Fits: 08-14 WRX & 08-21 STI
Regular price $499.99Sale price $499.99 Regular priceUnit price per$499.99 -
![COBB [08 - 14 WRX, 08 - 21 STI] Silicone Radiator Hose Kit Black - JDMuscleRadiator HosescobbB22400-BK](//jdmuscleusa.com/cdn/shop/files/cobb-08-14-wrx-08-21-sti-silicone-radiator-hose-kit-black-5125754.jpg?v=1770328028&width=220)
In StockCOBB Silicone Radiator Hose Kit Black
Fits: 08-14 WRX, 08-21 STI
Regular price $121.00Sale price $121.00 Regular priceUnit price per$121.00 -
![Mishimoto [08 - 21 WRX/STI] Aluminum Coolant Overflow Tank - Polished | MMRT - STI - 08 - JDMuscleOverflow Tanks / Coolant Tank and AccessoriesMIMMRT-STI-08](//jdmuscleusa.com/cdn/shop/products/mishimoto-08-21-wrxsti-aluminum-coolant-overflow-tank-polished-mmrt-sti-08-8574580.png?v=1770329185&width=220)
![Mishimoto [08 - 21 WRX/STI] Aluminum Coolant Overflow Tank - Polished | MMRT - STI - 08 - JDMuscleOverflow Tanks / Coolant Tank and AccessoriesMIMMRT-STI-08](//jdmuscleusa.com/cdn/shop/products/mishimoto-08-21-wrxsti-aluminum-coolant-overflow-tank-polished-mmrt-sti-08-6197822.png?v=1770329185&width=220)
Up to $23.05 off
In StockMishimoto Aluminum Coolant Overflow Tank - Polished
Fits: 08-21 WRX/STI
Only 3 leftRegular price $233.95Sale price $233.95 Regular priceUnit price per$257.00 -
Cobb 12mm Urethane Exhaust Hanger
Fits: 08-25 WRX/STI
Regular price $25.00Sale price $25.00 Regular priceUnit price per$25.00 -
![Cobb [02 - 07 WRX, 04 - 21 STI] TD05H - 20G - 8 Turbocharger | E1120G - JDMuscleTurboscobbE1120G](//jdmuscleusa.com/cdn/shop/products/cobb-02-07-wrx-04-21-sti-td05h-20g-8-turbocharger-e1120g-6497348.jpg?v=1770336435&width=220)
![Cobb [02 - 07 WRX, 04 - 21 STI] TD05H - 20G - 8 Turbocharger | E1120G - JDMuscleTurboscobbE1120G](//jdmuscleusa.com/cdn/shop/products/cobb-02-07-wrx-04-21-sti-td05h-20g-8-turbocharger-e1120g-3149936.jpg?v=1770336436&width=220)
In StockCobb TD05H-20G-8 Turbocharger
Fits: 02-07 WRX, 04-21 STI
Regular price $1,470.00Sale price $1,470.00 Regular priceUnit price per$1,470.00 -
![COBB [08 - 21 STI] Fuel Pressure Regulator Kit | 315200 - JDMuscleFuel Pressure Regulatorscobb315200](//jdmuscleusa.com/cdn/shop/products/cobb-08-21-sti-fuel-pressure-regulator-kit-315200-9296320.jpg?v=1770336560&width=220)
![COBB [08 - 21 STI] Fuel Pressure Regulator Kit | 315200 - JDMuscleFuel Pressure Regulatorscobb315200](//jdmuscleusa.com/cdn/shop/products/cobb-08-21-sti-fuel-pressure-regulator-kit-315200-1913435.jpg?v=1770336560&width=220)
In StockCOBB Fuel Pressure Regulator Kit
Fits: 08-21 STI
Regular price $410.00Sale price $410.00 Regular priceUnit price per$410.00 -
Forced Performance 04-21 Subaru STI/ 02-07 WRX FP GREEN 57S Turbocharger 84MM CH 8CM Turbine Housing External Wastegate Oil Line Included | 2029130
Regular price $7,374.00Sale price $7,374.00 Regular priceUnit price per$7,374.00 -
![AWE Tuning [11-25 WRX Sedan, 11-21 STI Sedan] Touring to Track Conversion Axle Back Exhaust - JDMuscleAxle Back Exhaustsawe3820-41004](//jdmuscleusa.com/cdn/shop/products/awe-tuning-11-25-wrx-sedan-11-21-sti-sedan-touring-to-track-conversion-axle-back-exhaust-8317351.jpg?v=1786515856&width=220)
Up to $20.79 off
In StockAWE Tuning Touring to Track Conversion Axle Back Exhaust
Fits: 11-25 WRX Sedan, 11-21 STI Sedan
Only 1 leftRegular price $395.00Sale price $395.00 Regular priceUnit price per$415.79 -
Up to $160 off
In StockPerrin Air Oil Separator Neon Yellow w/ FMIC
Fits: 02-14 WRX, 04-21 STI, 05-09 LGT
Only 1 leftRegular price $412.00Sale price $412.00 Regular priceUnit price per$572.00 -
In StockInjector Dynamics 1050cc Top Feed Fuel Injectors | 1050.48.11.WRX.4
Fits: 02-14 WRX, 07-21 STI
Regular price $600.60Sale price $600.60 Regular priceUnit price per$600.60 -
Up to $89.40 offInvidia Uppipe No EGT Bung | HS06SW1UPP
Fits: 02-14 WRX, 04-21 STI
Regular price $311.00Sale price $311.00 Regular priceUnit price per$400.40 -
Up to $6.60 off
In StockPerrin Throttle Body Hose Black
Fits: 02-07 WRX, 04-21 STI
Regular price $37.40Sale price $37.40 Regular priceUnit price per$44.00 -
![Turbosmart [02 - 07 WRX, 04 - 21 STI] 34mm Blow Off Valve Plug | TS - 0205 - 2016 - JDMuscleBlow Off ValvesTBSTS-0205-2016](//jdmuscleusa.com/cdn/shop/products/turbosmart-02-07-wrx-04-21-sti-34mm-blow-off-valve-plug-ts-0205-2016-4504580.jpg?v=1770334633&width=220)
Up to $1.60 offTurbosmart 34mm Blow Off Valve Plug
Fits: 02-07 WRX, 04-21 STI
Regular price $14.39Sale price $14.39 Regular priceUnit price per$15.99 -
![COBB [02 - 14 WRX, 07 - 21 STI, 07 - 12 Legacy GT, 06 - 13 Forester XT] Top Feed 1050X Fuel Injectors | 312150 - JDMuscleFuel Injectors and Accessoriescobb312150](//jdmuscleusa.com/cdn/shop/products/cobb-02-14-wrx-07-21-sti-07-12-legacy-gt-06-13-forester-xt-top-feed-1050x-fuel-injectors-312150-5750979.jpg?v=1770336558&width=220)
![COBB [02 - 14 WRX, 07 - 21 STI, 07 - 12 Legacy GT, 06 - 13 Forester XT] Top Feed 1050X Fuel Injectors | 312150 - JDMuscleFuel Injectors and Accessoriescobb312150](//jdmuscleusa.com/cdn/shop/products/cobb-02-14-wrx-07-21-sti-07-12-legacy-gt-06-13-forester-xt-top-feed-1050x-fuel-injectors-312150-9693839.jpg?v=1770336559&width=220)
In StockCOBB Top Feed 1050X Fuel Injectors
Fits: 02-14 WRX, 07-21 STI, 07-12 Legacy GT, 06-13 Forester XT
Regular price $625.00Sale price $625.00 Regular priceUnit price per$625.00 -
Up to $156 off
In StockPLM Power Driven Subaru EWG 3-Bolt Up Pipe & Dump Tube 38mm WRX 2002-2014 / STI 2004-2020 / Baja Turbo 2004-2006 / Forester XT 2004-2013 / Legacy GT 2005-2009 / Outback XT 2005-2009 | PLM-SUB-UP-PIPE-EWG-38MM-3B
Only 8 leftRegular price $339.00Sale price $339.00 Regular priceUnit price per$495.00
![AWE [11-21 WRX/STI Sedan] Track Edition Cat Back Exhaust Chrome Silver Quad Tips 102mm | 3020-42058](http://jdmuscleusa.com/cdn/shop/products/awe-track-edition-cat-back-exhaust-subaru-wrx-sti-sedan-2011-2019-chrome-silver-quad-tips-102mm-3020-42058-cat-back-exhaust-system-awe-tuning-awe3020-42058.jpg?v=1614525828&width=220)
![AWE [11-21 WRX/STI Sedan] Track Edition Cat Back Exhaust Chrome Silver Quad Tips 102mm | 3020-42058](http://jdmuscleusa.com/cdn/shop/products/awe-track-edition-cat-back-exhaust-subaru-wrx-sti-sedan-2011-2019-chrome-silver-quad-tips-102mm-3020-42058-cat-back-exhaust-system-awe-tuning-awe3020-42058-2.jpg?v=1614678397&width=220)
![COBB [08 - 14 WRX, 08 - 21 STI] Silicone Radiator Hose Kit Black - JDMuscleRadiator HosescobbB22400-BK](http://jdmuscleusa.com/cdn/shop/files/cobb-08-14-wrx-08-21-sti-silicone-radiator-hose-kit-black-5125754.jpg?v=1770328028&width=220)
![Mishimoto [08 - 21 WRX/STI] Aluminum Coolant Overflow Tank - Polished | MMRT - STI - 08 - JDMuscleOverflow Tanks / Coolant Tank and AccessoriesMIMMRT-STI-08](http://jdmuscleusa.com/cdn/shop/products/mishimoto-08-21-wrxsti-aluminum-coolant-overflow-tank-polished-mmrt-sti-08-8574580.png?v=1770329185&width=220)
![Mishimoto [08 - 21 WRX/STI] Aluminum Coolant Overflow Tank - Polished | MMRT - STI - 08 - JDMuscleOverflow Tanks / Coolant Tank and AccessoriesMIMMRT-STI-08](http://jdmuscleusa.com/cdn/shop/products/mishimoto-08-21-wrxsti-aluminum-coolant-overflow-tank-polished-mmrt-sti-08-6197822.png?v=1770329185&width=220)
![Cobb [02 - 07 WRX, 04 - 21 STI] TD05H - 20G - 8 Turbocharger | E1120G - JDMuscleTurboscobbE1120G](http://jdmuscleusa.com/cdn/shop/products/cobb-02-07-wrx-04-21-sti-td05h-20g-8-turbocharger-e1120g-6497348.jpg?v=1770336435&width=220)
![Cobb [02 - 07 WRX, 04 - 21 STI] TD05H - 20G - 8 Turbocharger | E1120G - JDMuscleTurboscobbE1120G](http://jdmuscleusa.com/cdn/shop/products/cobb-02-07-wrx-04-21-sti-td05h-20g-8-turbocharger-e1120g-3149936.jpg?v=1770336436&width=220)
![COBB [08 - 21 STI] Fuel Pressure Regulator Kit | 315200 - JDMuscleFuel Pressure Regulatorscobb315200](http://jdmuscleusa.com/cdn/shop/products/cobb-08-21-sti-fuel-pressure-regulator-kit-315200-9296320.jpg?v=1770336560&width=220)
![COBB [08 - 21 STI] Fuel Pressure Regulator Kit | 315200 - JDMuscleFuel Pressure Regulatorscobb315200](http://jdmuscleusa.com/cdn/shop/products/cobb-08-21-sti-fuel-pressure-regulator-kit-315200-1913435.jpg?v=1770336560&width=220)
![AWE Tuning [11-25 WRX Sedan, 11-21 STI Sedan] Touring to Track Conversion Axle Back Exhaust - JDMuscleAxle Back Exhaustsawe3820-41004](http://jdmuscleusa.com/cdn/shop/products/awe-tuning-11-25-wrx-sedan-11-21-sti-sedan-touring-to-track-conversion-axle-back-exhaust-8317351.jpg?v=1786515856&width=220)
![Turbosmart [02 - 07 WRX, 04 - 21 STI] 34mm Blow Off Valve Plug | TS - 0205 - 2016 - JDMuscleBlow Off ValvesTBSTS-0205-2016](http://jdmuscleusa.com/cdn/shop/products/turbosmart-02-07-wrx-04-21-sti-34mm-blow-off-valve-plug-ts-0205-2016-4504580.jpg?v=1770334633&width=220)
![COBB [02 - 14 WRX, 07 - 21 STI, 07 - 12 Legacy GT, 06 - 13 Forester XT] Top Feed 1050X Fuel Injectors | 312150 - JDMuscleFuel Injectors and Accessoriescobb312150](http://jdmuscleusa.com/cdn/shop/products/cobb-02-14-wrx-07-21-sti-07-12-legacy-gt-06-13-forester-xt-top-feed-1050x-fuel-injectors-312150-5750979.jpg?v=1770336558&width=220)
![COBB [02 - 14 WRX, 07 - 21 STI, 07 - 12 Legacy GT, 06 - 13 Forester XT] Top Feed 1050X Fuel Injectors | 312150 - JDMuscleFuel Injectors and Accessoriescobb312150](http://jdmuscleusa.com/cdn/shop/products/cobb-02-14-wrx-07-21-sti-07-12-legacy-gt-06-13-forester-xt-top-feed-1050x-fuel-injectors-312150-9693839.jpg?v=1770336559&width=220)
