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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Up to $4 off
In StockRadium Engineering DIY Fuel Pump Wiring Kit - Universal | 17-0031
Regular price $75.95Sale price $75.95 Regular priceUnit price per$79.95 -
Up to $233.33 off
In StockSnow Performance Gas Stage 2 The New Boost Cooler Forced Induction Water/Methanol Injection Kit - Universal
Regular price $583.34Sale price $583.34 Regular priceUnit price per$816.67 -
In StockKartboy Battery Tie Down | KB-100-BT
Fits: Most Subaru Models
Regular price $45.00Sale price $45.00 Regular priceUnit price per$45.00 -
In StockGates 04-14 WRX/ 04-21 STI/ 05-09 LGT Timing Belt Kit | TCK328
Only 5 leftRegular price $351.00Sale price $351.00 Regular priceUnit price per$351.00 -
In StockTorque Solution T-Bolt Hose Clamp - Universal
Only 15 leftRegular price From $15.00Sale price From $15.00 Regular priceUnit price per$15.00 -
Up to $120.98 off
In StockTurboXS RFL Blow Off Valve
Fits: 02-07 WRX, 04-21 STI
Regular price $204.00Sale price $204.00 Regular priceUnit price per$324.98 -
Grimmspeed 02-07 WRX / 04-21 STI / 04-08 FXT Top Mount Intercooler Y-Pipe Kit Red | 090095
Regular price $245.00Sale price $245.00 Regular priceUnit price per$245.00 -
GrimmSpeed 06-07 WRX / 04-21 STI Drive-by-Wire Throttle Body Gasket | 020010
Regular price $24.00Sale price $24.00 Regular priceUnit price per$24.00 -
In StockInjector Dymanics Fuel Injector PnP Adapter USCAR to Denso - Universal
Regular price $17.33Sale price $17.33 Regular priceUnit price per$17.33 -
Up to $869.80 off
In StockInvidia R400 Gemini Cat Back Exhaust Quad SS Tip WRX/STI 2011-2014 Sedan | HS11STIGM4SS
Only 9 leftRegular price $1,611.00Sale price $1,611.00 Regular priceUnit price per$2,480.80 -
Killer B Motorsport 4-1 Holy Header 2-Bolt w/ SwainTech Ceramic Coating WRX 2002-2014 / STI 2004-21 | HH-2BOLT-SWAIN
Regular price $1,989.00Sale price $1,989.00 Regular priceUnit price per$1,989.00 -
Up to $18 off
In StockOVERTAKE Catback Exhaust Hardware Refresh Kit
Fits: 08-26, 08-21 STI Sedan
Regular price $89.00Sale price $89.00 Regular priceUnit price per$107.00 -
![COBB [02 - 07 WRX, 04 - 21 STI, 06 - 08 FXT] LF Bypass Valve | 712665 - JDMuscleBlow Off Valvescobb712665](//jdmuscleusa.com/cdn/shop/products/cobb-02-07-wrx-04-21-sti-06-08-fxt-lf-bypass-valve-712665-7110805.jpg?v=1770336431&width=220)
![COBB [02 - 07 WRX, 04 - 21 STI, 06 - 08 FXT] LF Bypass Valve | 712665 - JDMuscleBlow Off Valvescobb712665](//jdmuscleusa.com/cdn/shop/products/cobb-02-07-wrx-04-21-sti-06-08-fxt-lf-bypass-valve-712665-1547680.jpg?v=1770336431&width=220)
In StockCOBB LF Bypass Valve
Fits: 02-07 WRX, 04-21 STI, 06-08 FXT
Regular price $375.00Sale price $375.00 Regular priceUnit price per$375.00 -
![XForce [11 - 21 WRX/STI Sedan] Varex Valved Cat Back Exhaust System | ESSWRX14VKCS - JDMuscleCat Back Exhaust SystemESSWRX14VKCS](//jdmuscleusa.com/cdn/shop/files/xforce-11-21-wrxsti-sedan-varex-valved-cat-back-exhaust-system-esswrx14vkcs-6989416.png?v=1770329960&width=220)
![XForce [11 - 21 WRX/STI Sedan] Varex Valved Cat Back Exhaust System | ESSWRX14VKCS - JDMuscleCat Back Exhaust SystemESSWRX14VKCS](//jdmuscleusa.com/cdn/shop/files/xforce-11-21-wrxsti-sedan-varex-valved-cat-back-exhaust-system-esswrx14vkcs-2788998.png?v=1770329960&width=220)
Up to $185 offXForce Varex Valved Cat Back Exhaust System | ESSWRX14VKCS
Fits: 11-21 WRX/STI Sedan
Regular price $1,665.00Sale price $1,665.00 Regular priceUnit price per$1,850.00 -
Injector Dynamics 02-14 WRX / 07-19 STI Top Feed ID1050X Power Package 1
Regular price From $643.00Sale price From $643.00 Regular priceUnit price per$643.00 -
Process West Silicone Y-Pipe
Fits: 02-07 WRX, 04-14 STI
Regular price $93.30Sale price $93.30 Regular priceUnit price per$93.30
![COBB [02 - 07 WRX, 04 - 21 STI, 06 - 08 FXT] LF Bypass Valve | 712665 - JDMuscleBlow Off Valvescobb712665](http://jdmuscleusa.com/cdn/shop/products/cobb-02-07-wrx-04-21-sti-06-08-fxt-lf-bypass-valve-712665-7110805.jpg?v=1770336431&width=220)
![COBB [02 - 07 WRX, 04 - 21 STI, 06 - 08 FXT] LF Bypass Valve | 712665 - JDMuscleBlow Off Valvescobb712665](http://jdmuscleusa.com/cdn/shop/products/cobb-02-07-wrx-04-21-sti-06-08-fxt-lf-bypass-valve-712665-1547680.jpg?v=1770336431&width=220)
![XForce [11 - 21 WRX/STI Sedan] Varex Valved Cat Back Exhaust System | ESSWRX14VKCS - JDMuscleCat Back Exhaust SystemESSWRX14VKCS](http://jdmuscleusa.com/cdn/shop/files/xforce-11-21-wrxsti-sedan-varex-valved-cat-back-exhaust-system-esswrx14vkcs-6989416.png?v=1770329960&width=220)
![XForce [11 - 21 WRX/STI Sedan] Varex Valved Cat Back Exhaust System | ESSWRX14VKCS - JDMuscleCat Back Exhaust SystemESSWRX14VKCS](http://jdmuscleusa.com/cdn/shop/files/xforce-11-21-wrxsti-sedan-varex-valved-cat-back-exhaust-system-esswrx14vkcs-2788998.png?v=1770329960&width=220)
