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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![Mishimoto [08 - 15 WRX/STI] PNP Aluminum Fan Shroud Black | MMFS - STI - 08PBK - JDMuscleElectric FansmisMMFS-STI-08PBK](//jdmuscleusa.com/cdn/shop/products/mishimoto-08-15-wrxsti-pnp-aluminum-fan-shroud-black-mmfs-sti-08pbk-9276511.png?v=1770329012&width=220)
![Mishimoto [08 - 15 WRX/STI] PNP Aluminum Fan Shroud Black | MMFS - STI - 08PBK - JDMuscleElectric FansmisMMFS-STI-08PBK](//jdmuscleusa.com/cdn/shop/products/mishimoto-08-15-wrxsti-pnp-aluminum-fan-shroud-black-mmfs-sti-08pbk-7065278.png?v=1770329012&width=220)
Up to $36.05 off
In StockMishimoto PNP Aluminum Fan Shroud Black | MMFS-STI-08PBK
Fits: 08-15 WRX/STI
Only 7 leftRegular price $359.95Sale price $359.95 Regular priceUnit price per$396.00 -
Killer B Motorsport Cast Aluminum High Flow Water Pump Housing EJ Series Powder Coat Black WRX 2004-2014 / STI 2004-2020 / Forester XT 2004-2013 / Outback XT 2004-2009 / Legacy GT 2004-2009 | WPHV2-B
Regular price $246.00Sale price $246.00 Regular priceUnit price per$246.00 -
![GrimmSpeed [Subaru Models inc. 02 - 14 WRX / 04 - 21 STI] Lightweight Crank Pulley Red | GRM095015R - JDMusclePulleysgrm095015R](//jdmuscleusa.com/cdn/shop/products/grimmspeed-subaru-models-inc-02-14-wrx-04-21-sti-lightweight-crank-pulley-red-grm095015r-6951138.jpg?v=1770329532&width=220)
![GrimmSpeed [Subaru Models inc. 02 - 14 WRX / 04 - 21 STI] Lightweight Crank Pulley Red | GRM095015R - JDMusclePulleysgrm095015R](//jdmuscleusa.com/cdn/shop/products/grimmspeed-subaru-models-inc-02-14-wrx-04-21-sti-lightweight-crank-pulley-red-grm095015r-2827011.jpg?v=1770329532&width=220)
GrimmSpeed Lightweight Crank Pulley Red | GRM095015R
Fits: Subaru Models inc. 02-14 WRX / 04-21 STI
Regular price $189.00Sale price $189.00 Regular priceUnit price per$189.00 -
Up to $70.57 off
In StockGSC Power-Division Single Beehive Valve Spring Set w/ Titanium Retainers Subaru Models | inc. 2002-2014 WRX / 2004+ STI | 5043
Regular price $399.92Sale price $399.92 Regular priceUnit price per$470.49 -
REMARK R1 Catback Exhaust - WRX/STI | GR Hatchback 08-14, Titanium | RK-C1076S-02T
Regular price $1,329.00Sale price $1,329.00 Regular priceUnit price per$1,329.00 -
Up to $25 offBLOX Racing Air Box Intake Hose - Black
Fits: 08-14 WRX, 08-20 STI
Regular price $65.00Sale price $65.00 Regular priceUnit price per$90.00 -
Up to $64.65 off
In StockPerrin Carb Approved Cold Air Intake Hyper Pink WRX 2008-2014 / STI 2008-2015 | PSP-INT-322HP
Only 3 leftRegular price $366.35Sale price $366.35 Regular priceUnit price per$431.00 -
Cobb 11-14 WRX Hatch, 08-14 STi Hatch 3in Titanium Cat-Back Exhaust
Regular price $2,110.00Sale price $2,110.00 Regular priceUnit price per$2,110.00 -
![Cobb [11 - 14 STI/WRX Sedan] Quad 3.5in Tips Cat - Back Exhaust Hardware Kit - JDMuscleExhaust Gaskets and Hardwarecobb515122-HW](//jdmuscleusa.com/cdn/shop/products/cobb-11-14-stiwrx-sedan-quad-35in-tips-cat-back-exhaust-hardware-kit-2634595.jpg?v=1770330434&width=220)
![Cobb [11 - 14 STI/WRX Sedan] Quad 3.5in Tips Cat - Back Exhaust Hardware Kit - JDMuscleExhaust Gaskets and Hardwarecobb515122-HW](//jdmuscleusa.com/cdn/shop/products/cobb-11-14-stiwrx-sedan-quad-35in-tips-cat-back-exhaust-hardware-kit-9540823.jpg?v=1770330434&width=220)
Cobb Quad 3.5in Tips Cat-Back Exhaust Hardware Kit
Fits: 11-14 STI/WRX Sedan
Regular price $34.00Sale price $34.00 Regular priceUnit price per$34.00 -
Killer B Motorsport Dual Reservoir Tank | Wash / Coolant for 08-14 WRX/STi | DWR2
Regular price $494.00Sale price $494.00 Regular priceUnit price per$329.00 -
COBB Subaru Impreza WRX or STI Cat-Back Exhaust Replacement Hardware Kit Gasket and bolts
Regular price $34.00Sale price $34.00 Regular priceUnit price per$34.00 -
Cobb 3in 2-Bolt Exhaust Gasket
Regular price $30.00Sale price $30.00 Regular priceUnit price per$30.00 -
IAG Performance / ARP 14mm Head Stud Set Most Subaru Models
Regular price $599.99Sale price $599.99 Regular priceUnit price per$599.99 -
IAG Performance V2 Oil Pickup
Fits: 02-14 WRX, 04-21 STI, 05-09 LGT, 04-13 FXT
Regular price $149.99Sale price $149.99 Regular priceUnit price per$149.99 -
IAG V2 Alternator Relocation Kit for Reversed Intake Manifold for Multiple Subaru Fitments | IAG-ENG-5211
Regular price $249.99Sale price $249.99 Regular priceUnit price per$249.99 -
![IAG [02 - 14 WRX, 04 - 21 STI, 05 - 09 LGT, 04 - 08 FXT] V2 Timing Belt Guide | IAG - ENG - 5101BK - JDMuscleTiming Belt ComponentsIAG-ENG-5101BK](//jdmuscleusa.com/cdn/shop/products/iag-02-14-wrx-04-21-sti-05-09-lgt-04-08-fxt-v2-timing-belt-guide-iag-eng-5101bk-9536642.jpg?v=1770331224&width=220)
![IAG [02 - 14 WRX, 04 - 21 STI, 05 - 09 LGT, 04 - 08 FXT] V2 Timing Belt Guide | IAG - ENG - 5101BK - JDMuscleTiming Belt ComponentsIAG-ENG-5101BK](//jdmuscleusa.com/cdn/shop/products/iag-02-14-wrx-04-21-sti-05-09-lgt-04-08-fxt-v2-timing-belt-guide-iag-eng-5101bk-6320311.jpg?v=1770331224&width=220)
IAG V2 Timing Belt Guide
Fits: 02-14 WRX, 04-21 STI, 05-09 LGT, 04-08 FXT
Regular price $59.99Sale price $59.99 Regular priceUnit price per$59.99
![Mishimoto [08 - 15 WRX/STI] PNP Aluminum Fan Shroud Black | MMFS - STI - 08PBK - JDMuscleElectric FansmisMMFS-STI-08PBK](http://jdmuscleusa.com/cdn/shop/products/mishimoto-08-15-wrxsti-pnp-aluminum-fan-shroud-black-mmfs-sti-08pbk-9276511.png?v=1770329012&width=220)
![Mishimoto [08 - 15 WRX/STI] PNP Aluminum Fan Shroud Black | MMFS - STI - 08PBK - JDMuscleElectric FansmisMMFS-STI-08PBK](http://jdmuscleusa.com/cdn/shop/products/mishimoto-08-15-wrxsti-pnp-aluminum-fan-shroud-black-mmfs-sti-08pbk-7065278.png?v=1770329012&width=220)
![GrimmSpeed [Subaru Models inc. 02 - 14 WRX / 04 - 21 STI] Lightweight Crank Pulley Red | GRM095015R - JDMusclePulleysgrm095015R](http://jdmuscleusa.com/cdn/shop/products/grimmspeed-subaru-models-inc-02-14-wrx-04-21-sti-lightweight-crank-pulley-red-grm095015r-6951138.jpg?v=1770329532&width=220)
![GrimmSpeed [Subaru Models inc. 02 - 14 WRX / 04 - 21 STI] Lightweight Crank Pulley Red | GRM095015R - JDMusclePulleysgrm095015R](http://jdmuscleusa.com/cdn/shop/products/grimmspeed-subaru-models-inc-02-14-wrx-04-21-sti-lightweight-crank-pulley-red-grm095015r-2827011.jpg?v=1770329532&width=220)
![Cobb [11 - 14 STI/WRX Sedan] Quad 3.5in Tips Cat - Back Exhaust Hardware Kit - JDMuscleExhaust Gaskets and Hardwarecobb515122-HW](http://jdmuscleusa.com/cdn/shop/products/cobb-11-14-stiwrx-sedan-quad-35in-tips-cat-back-exhaust-hardware-kit-2634595.jpg?v=1770330434&width=220)
![Cobb [11 - 14 STI/WRX Sedan] Quad 3.5in Tips Cat - Back Exhaust Hardware Kit - JDMuscleExhaust Gaskets and Hardwarecobb515122-HW](http://jdmuscleusa.com/cdn/shop/products/cobb-11-14-stiwrx-sedan-quad-35in-tips-cat-back-exhaust-hardware-kit-9540823.jpg?v=1770330434&width=220)
![IAG [02 - 14 WRX, 04 - 21 STI, 05 - 09 LGT, 04 - 08 FXT] V2 Timing Belt Guide | IAG - ENG - 5101BK - JDMuscleTiming Belt ComponentsIAG-ENG-5101BK](http://jdmuscleusa.com/cdn/shop/products/iag-02-14-wrx-04-21-sti-05-09-lgt-04-08-fxt-v2-timing-belt-guide-iag-eng-5101bk-9536642.jpg?v=1770331224&width=220)
![IAG [02 - 14 WRX, 04 - 21 STI, 05 - 09 LGT, 04 - 08 FXT] V2 Timing Belt Guide | IAG - ENG - 5101BK - JDMuscleTiming Belt ComponentsIAG-ENG-5101BK](http://jdmuscleusa.com/cdn/shop/products/iag-02-14-wrx-04-21-sti-05-09-lgt-04-08-fxt-v2-timing-belt-guide-iag-eng-5101bk-6320311.jpg?v=1770331224&width=220)