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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APR 08-14 WRX / 08-21 STI Carbon Fiber Alternator Cover | CBE-WRXALT08
Regular price $160.00Sale price $160.00 Regular priceUnit price per$154.00 -
TR Twin Scroll High Flow Catless Downpipe
Fits: 08-14 WRX, 08-18 STI
Regular price $750.00Sale price $750.00 Regular priceUnit price per$600.00 -
![Subaru OEM Tumbler to Engine Gasket [WRX/STI Subaru EJ Turbo Models] | 14035AA421](//jdmuscleusa.com/cdn/shop/products/subaru-oem-tumbler-to-engine-gasket-wrx-sti-subaru-ej-turbo-models-2002-2020-14035aa421-intake-system-gaskets-subaru-oem-sub14035aa421.jpg?v=1614543684&width=220)
Subaru OEM Tumbler to Engine Gasket | 14035AA421
Fits: WRX/STI Subaru EJ Turbo Models
Regular price $5.88Sale price $5.88 Regular priceUnit price per$5.88 -
Killer B 02-07 WRX / 04-21 STI OEM Coupler for Motorsport Extreme Flow HARD Turbo Inlet | TIEJCOE
Regular price $49.00Sale price $49.00 Regular priceUnit price per$49.00 -
Up to $12 off
In StockTomei 06-14 WRX / 04-21 STI / 05-09 LGT Head Gasket 1.2mm Pair
Only 5 leftRegular price $108.00Sale price $108.00 Regular priceUnit price per$120.00 -
Grimmspeed V2 Bypass Valve Red
Fits: 04-21 STI, 02-07 WRX
Regular price $321.00Sale price $321.00 Regular priceUnit price per$321.00 -
![CSF [08 - 21 WRX/STI] 2 - Row Subaru Aluminum Radiator | B22415 - RS - JDMuscleRadiatorsCOBB22415-RS](//jdmuscleusa.com/cdn/shop/products/csf-08-21-wrxsti-2-row-subaru-aluminum-radiator-b22415-rs-1190897.jpg?v=1770330014&width=220)
![CSF [08 - 21 WRX/STI] 2 - Row Subaru Aluminum Radiator | B22415 - RS - JDMuscleRadiatorsCOBB22415-RS](//jdmuscleusa.com/cdn/shop/products/csf-08-21-wrxsti-2-row-subaru-aluminum-radiator-b22415-rs-6671145.jpg?v=1770330014&width=220)
CSF 2-Row Subaru Aluminum Radiator | B22415-RS
Fits: 08-21 WRX/STI
Regular price $398.00Sale price $398.00 Regular priceUnit price per$398.00 -
In StockCOBB Subaru EJ Turbo Blanket Black Lava
Only 4 leftRegular price $217.00Sale price $217.00 Regular priceUnit price per$217.00 -
IAG Performance Unequal Length Header & Up Pipe for 2002-2014 WRX and 2004-21 WRX STI | IAG-EXT-1000
Regular price $849.99Sale price $849.99 Regular priceUnit price per$849.99 -
IAG Performance Equal Length Header & Up Pipe for Multiple Subaru Fitments
Regular price $899.99Sale price $899.99 Regular priceUnit price per$899.99 -
Up to $28.50 off
In StockTurbosmart Blow Off Valve Kompact Dual Port Black
Fits: 02-07 WRX, 04-21 STI
Only 7 leftRegular price $256.49Sale price $256.49 Regular priceUnit price per$284.99 -
In StockCOBB Fuel Pressure Regulator For Fuel Rail Kit
Fits: 08-21 STI
Regular price $380.00Sale price $380.00 Regular priceUnit price per$380.00 -
![COBB [02 - 07 WRX, 04 - 21 STI, 04 - 08 FXT] Throttle Body Coupler - Black | 712455 - JDMuscleThrottle Body Hosescobb712455](//jdmuscleusa.com/cdn/shop/products/cobb-02-07-wrx-04-21-sti-04-08-fxt-throttle-body-coupler-black-712455-6973469.jpg?v=1770336382&width=220)
In StockCOBB Throttle Body Coupler-Black
Fits: 02-07 WRX, 04-21 STI, 04-08 FXT
Regular price $63.00Sale price $63.00 Regular priceUnit price per$63.00 -
![XForce [08-14 WRX / 08-21 STI] Pro Series Catted Downpipe | ES-SW08-KITB](//jdmuscleusa.com/cdn/shop/products/ES-SW08-KITB.png?v=1630006965&width=220)
Up to $79.90 off
In StockXForce Pro Series Catted Downpipe | ES-SW08-KITB
Fits: 08-14 WRX, 08-21 STI
Only 10 leftRegular price $719.10Sale price $719.10 Regular priceUnit price per$799.00 -
Up to $18.60 off
In StockPERRIN Performance Fender Shrouds - Red
Fits: 11-14 WRX, 08-14 STI
Only 19 leftRegular price $105.40Sale price $105.40 Regular priceUnit price per$124.00 -
In StockProthane Universal Super Grease - 0.5oz Pack of 3 - Red
Regular price $11.00Sale price $11.00 Regular priceUnit price per$11.00
![Subaru OEM Tumbler to Engine Gasket [WRX/STI Subaru EJ Turbo Models] | 14035AA421](http://jdmuscleusa.com/cdn/shop/products/subaru-oem-tumbler-to-engine-gasket-wrx-sti-subaru-ej-turbo-models-2002-2020-14035aa421-intake-system-gaskets-subaru-oem-sub14035aa421.jpg?v=1614543684&width=220)
![CSF [08 - 21 WRX/STI] 2 - Row Subaru Aluminum Radiator | B22415 - RS - JDMuscleRadiatorsCOBB22415-RS](http://jdmuscleusa.com/cdn/shop/products/csf-08-21-wrxsti-2-row-subaru-aluminum-radiator-b22415-rs-1190897.jpg?v=1770330014&width=220)
![CSF [08 - 21 WRX/STI] 2 - Row Subaru Aluminum Radiator | B22415 - RS - JDMuscleRadiatorsCOBB22415-RS](http://jdmuscleusa.com/cdn/shop/products/csf-08-21-wrxsti-2-row-subaru-aluminum-radiator-b22415-rs-6671145.jpg?v=1770330014&width=220)
![COBB [02 - 07 WRX, 04 - 21 STI, 04 - 08 FXT] Throttle Body Coupler - Black | 712455 - JDMuscleThrottle Body Hosescobb712455](http://jdmuscleusa.com/cdn/shop/products/cobb-02-07-wrx-04-21-sti-04-08-fxt-throttle-body-coupler-black-712455-6973469.jpg?v=1770336382&width=220)
![XForce [08-14 WRX / 08-21 STI] Pro Series Catted Downpipe | ES-SW08-KITB](http://jdmuscleusa.com/cdn/shop/products/ES-SW08-KITB.png?v=1630006965&width=220)
