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
-
![Cobb [Subaru STI] 6MT Stage 1+ Drivetrain Package - JDMuscleEngine Package Dealscobb215X01P-W-RD](//jdmuscleusa.com/cdn/shop/files/cobb-subaru-sti-6mt-stage-1-drivetrain-package-8750611.webp?v=1770318269&width=220)
![Cobb [Subaru STI] 6MT Stage 1+ Drivetrain Package - JDMuscleEngine Package Dealscobb215X01P-W-RD](//jdmuscleusa.com/cdn/shop/files/cobb-subaru-sti-6mt-stage-1-drivetrain-package-1103748.webp?v=1770318269&width=220)
In StockCobb Tuning Stage 1+ Drivetrain Package with Double Adjustable Shifter - White/Race Red
Fits: 04-21 STI 6MT
Only 8 leftRegular price $375.00Sale price $375.00 Regular priceUnit price per$375.00 -
![Cobb [Subaru STI] 6MT Stage 1+ Drivetrain Package - JDMuscleEngine Package Dealscobb215X01P-W-BK](//jdmuscleusa.com/cdn/shop/files/cobb-subaru-sti-6mt-stage-1-drivetrain-package-4281310.webp?v=1770318268&width=220)
![Cobb [Subaru STI] 6MT Stage 1+ Drivetrain Package - JDMuscleEngine Package Dealscobb215X01P-W-BK](//jdmuscleusa.com/cdn/shop/files/cobb-subaru-sti-6mt-stage-1-drivetrain-package-9844102.webp?v=1770318268&width=220)
In StockCobb Tuning Stage 1+ Drivetrain Package with Double Adjustable Shifter - White/Stealth Black
Fits: 04-21 STI 6MT
Only 8 leftRegular price $375.00Sale price $375.00 Regular priceUnit price per$375.00 -
![Cobb [11 - 14 WRX Hatch, 08 - 14 STI Hatch] SS 3in Turboback Exhaust - JDMuscleTurbo Back Exhaustscobb515302](//jdmuscleusa.com/cdn/shop/files/cobb-11-14-wrx-hatch-08-14-sti-hatch-ss-3in-turboback-exhaust-7598638.webp?v=1770321310&width=220)
![Cobb [11 - 14 WRX Hatch, 08 - 14 STI Hatch] SS 3in Turboback Exhaust - JDMuscleTurbo Back Exhaustscobb515302](//jdmuscleusa.com/cdn/shop/files/cobb-11-14-wrx-hatch-08-14-sti-hatch-ss-3in-turboback-exhaust-8724709.webp?v=1770321310&width=220)
Up to $90 offCobb Tuning 3-Inch Stainless Steel Turboback Exhaust
Fits: 11-14 WRX Hatch, 08-14 STI Hatch
Regular price $2,185.00Sale price $2,185.00 Regular priceUnit price per$2,275.00 -
![Cobb [11 - 14 STI Sedan, 11 - 14 WRX Sedan] Turboback Exhaust System - Titanium - JDMuscleTurbo Back Exhaustscobb515322TI](//jdmuscleusa.com/cdn/shop/files/cobb-11-14-sti-sedan-11-14-wrx-sedan-turboback-exhaust-system-titanium-9269765.webp?v=1770321310&width=220)
![Cobb [11 - 14 STI Sedan, 11 - 14 WRX Sedan] Turboback Exhaust System - Titanium - JDMuscleTurbo Back Exhaustscobb515322TI](//jdmuscleusa.com/cdn/shop/files/cobb-11-14-sti-sedan-11-14-wrx-sedan-turboback-exhaust-system-titanium-2649091.webp?v=1770321311&width=220)
Up to $120 offCobb Tuning 3-Inch Titanium Turboback Exhaust *Discontinued*
Fits: 11-14 WRX Sedan, 11-14 STI Sedan
Regular price $2,905.00Sale price $2,905.00 Regular priceUnit price per$3,025.00 -
![IAG [08 - 19 STI] PTFE Flex Fuel System Kit w/ 1050cc Injectors - JDMuscleFuel System PackagesIAG-AFD-2310BKBlack Fuel Rails](//jdmuscleusa.com/cdn/shop/products/iag-08-19-sti-ptfe-flex-fuel-system-kit-w-1050cc-injectors-8820525.jpg?v=1772964128&width=220)
![IAG [08 - 19 STI] PTFE Flex Fuel System Kit w/ 1050cc Injectors - JDMuscleFuel System PackagesIAG-AFD-2310GDGold Fuel Rails](//jdmuscleusa.com/cdn/shop/products/iag-08-19-sti-ptfe-flex-fuel-system-kit-w-1050cc-injectors-7960607.jpg?v=1772964129&width=220)
In StockIAG PTFE Flex Fuel System Kit w/ 1050cc Injectors
Fits: 08-19 STI
Only 3 leftRegular price $1,799.99Sale price $1,799.99 Regular priceUnit price per$1,679.99 -
![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 -
![Cobb [08 - 14 STI Hatch ] Stage 3 + Flex Fuel Power Package - JDMuscleStaged Power PackagescobbSUB0031H3F-BKStealth Black Intake System](//jdmuscleusa.com/cdn/shop/products/cobb-08-14-sti-hatch-stage-3-flex-fuel-power-package-7856576.jpg?v=1770336141&width=220)
![Cobb [08 - 14 STI Hatch ] Stage 3 + Flex Fuel Power Package - JDMuscleStaged Power PackagescobbSUB0031H3F-BKStealth Black Intake System](//jdmuscleusa.com/cdn/shop/products/cobb-08-14-sti-hatch-stage-3-flex-fuel-power-package-6616083.jpg?v=1770336141&width=220)
COBB Stage 3 + Flex Fuel Power Package
Fits: 08-14 STI Hatch
Regular price $6,065.00Sale price $6,065.00 Regular priceUnit price per$6,065.00 -
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 Subaru WRX/STi 2008+ Oil Cooler Kit With Thermostat
Regular price $660.00Sale price $660.00 Regular priceUnit price per$660.00 -
In StockTR Subaru 2-Bolt Up-Pipe
Only 2 leftRegular price $350.00Sale price $350.00 Regular priceUnit price per$350.00 -
In StockTR Silicone Turbo Inlet for Subaru Impreza WRX/STI 2008-2018
Only 17 leftRegular price $235.00Sale price $235.00 Regular priceUnit price per$235.00
![Cobb [Subaru STI] 6MT Stage 1+ Drivetrain Package - JDMuscleEngine Package Dealscobb215X01P-W-RD](http://jdmuscleusa.com/cdn/shop/files/cobb-subaru-sti-6mt-stage-1-drivetrain-package-8750611.webp?v=1770318269&width=220)
![Cobb [Subaru STI] 6MT Stage 1+ Drivetrain Package - JDMuscleEngine Package Dealscobb215X01P-W-RD](http://jdmuscleusa.com/cdn/shop/files/cobb-subaru-sti-6mt-stage-1-drivetrain-package-1103748.webp?v=1770318269&width=220)
![Cobb [Subaru STI] 6MT Stage 1+ Drivetrain Package - JDMuscleEngine Package Dealscobb215X01P-W-BK](http://jdmuscleusa.com/cdn/shop/files/cobb-subaru-sti-6mt-stage-1-drivetrain-package-4281310.webp?v=1770318268&width=220)
![Cobb [Subaru STI] 6MT Stage 1+ Drivetrain Package - JDMuscleEngine Package Dealscobb215X01P-W-BK](http://jdmuscleusa.com/cdn/shop/files/cobb-subaru-sti-6mt-stage-1-drivetrain-package-9844102.webp?v=1770318268&width=220)
![Cobb [11 - 14 WRX Hatch, 08 - 14 STI Hatch] SS 3in Turboback Exhaust - JDMuscleTurbo Back Exhaustscobb515302](http://jdmuscleusa.com/cdn/shop/files/cobb-11-14-wrx-hatch-08-14-sti-hatch-ss-3in-turboback-exhaust-7598638.webp?v=1770321310&width=220)
![Cobb [11 - 14 WRX Hatch, 08 - 14 STI Hatch] SS 3in Turboback Exhaust - JDMuscleTurbo Back Exhaustscobb515302](http://jdmuscleusa.com/cdn/shop/files/cobb-11-14-wrx-hatch-08-14-sti-hatch-ss-3in-turboback-exhaust-8724709.webp?v=1770321310&width=220)
![Cobb [11 - 14 STI Sedan, 11 - 14 WRX Sedan] Turboback Exhaust System - Titanium - JDMuscleTurbo Back Exhaustscobb515322TI](http://jdmuscleusa.com/cdn/shop/files/cobb-11-14-sti-sedan-11-14-wrx-sedan-turboback-exhaust-system-titanium-9269765.webp?v=1770321310&width=220)
![Cobb [11 - 14 STI Sedan, 11 - 14 WRX Sedan] Turboback Exhaust System - Titanium - JDMuscleTurbo Back Exhaustscobb515322TI](http://jdmuscleusa.com/cdn/shop/files/cobb-11-14-sti-sedan-11-14-wrx-sedan-turboback-exhaust-system-titanium-2649091.webp?v=1770321311&width=220)
![IAG [08 - 19 STI] PTFE Flex Fuel System Kit w/ 1050cc Injectors - JDMuscleFuel System PackagesIAG-AFD-2310BKBlack Fuel Rails](http://jdmuscleusa.com/cdn/shop/products/iag-08-19-sti-ptfe-flex-fuel-system-kit-w-1050cc-injectors-8820525.jpg?v=1772964128&width=220)
![IAG [08 - 19 STI] PTFE Flex Fuel System Kit w/ 1050cc Injectors - JDMuscleFuel System PackagesIAG-AFD-2310GDGold Fuel Rails](http://jdmuscleusa.com/cdn/shop/products/iag-08-19-sti-ptfe-flex-fuel-system-kit-w-1050cc-injectors-7960607.jpg?v=1772964129&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)
![Cobb [08 - 14 STI Hatch ] Stage 3 + Flex Fuel Power Package - JDMuscleStaged Power PackagescobbSUB0031H3F-BKStealth Black Intake System](http://jdmuscleusa.com/cdn/shop/products/cobb-08-14-sti-hatch-stage-3-flex-fuel-power-package-7856576.jpg?v=1770336141&width=220)
![Cobb [08 - 14 STI Hatch ] Stage 3 + Flex Fuel Power Package - JDMuscleStaged Power PackagescobbSUB0031H3F-BKStealth Black Intake System](http://jdmuscleusa.com/cdn/shop/products/cobb-08-14-sti-hatch-stage-3-flex-fuel-power-package-6616083.jpg?v=1770336141&width=220)
