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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![Cobb [06-14 WRX, 04-21 STI, 05-09 LGT, 04-08 FXT] Spark Plug Set One Step Colder | D44700](//jdmuscleusa.com/cdn/shop/products/b1aa4f1627c975827869c09c78278c4e.jpg?v=1660655055&width=220)
![Cobb [06 - 14 WRX, 04 - 21 STI, 05 - 09 LGT, 04 - 08 FXT] Spark Plug Set One Step Colder - JDMuscleSpark PlugscobbD44700](//jdmuscleusa.com/cdn/shop/files/cobb-06-14-wrx-04-21-sti-05-09-lgt-04-08-fxt-spark-plug-set-one-step-colder-1998864.jpg?v=1770330674&width=220)
In StockCobb Spark Plug Set One Step Colder
Fits: 06-14 WRX, 04-21 STI, 05-09 LGT, 04-08 FXT
Only 13 leftRegular price $73.00Sale price $73.00 Regular priceUnit price per$73.00 -
![COBB [08 - 21 STI] Silicone Turbo Inlet V2 - Black - JDMuscleTurbo Inlet Hoses and Pipescobb712450](//jdmuscleusa.com/cdn/shop/products/cobb-08-21-sti-silicone-turbo-inlet-v2-black-5349387.jpg?v=1770336440&width=220)
![COBB [08 - 21 STI] Silicone Turbo Inlet V2 - Black - JDMuscleTurbo Inlet Hoses and Pipescobb712450](//jdmuscleusa.com/cdn/shop/products/cobb-08-21-sti-silicone-turbo-inlet-v2-black-7767070.jpg?v=1770336440&width=220)
In StockCOBB Silicone Turbo Inlet V2-Black
Fits: 08-21 STI
Regular price $290.00Sale price $290.00 Regular priceUnit price per$290.00 -
![Grimmspeed [08-21 WRX / 08-18 STI / 09-18 Forester / 13-17 Crosstrek / 05-17 Legacy] DRY-CON Panel Filter | 060091 - JDMuscleHigh Flow Replacement Panel Filtersgrm060091](//jdmuscleusa.com/cdn/shop/products/grimmspeed-08-21-wrx-08-18-sti-09-18-forester-13-17-crosstrek-05-17-legacy-dry-con-panel-filter-060091-5367637.jpg?v=1781013196&width=220)
![Grimmspeed [08-21 WRX / 08-18 STI / 09-18 Forester / 13-17 Crosstrek / 05-17 Legacy] DRY-CON Panel Filter | 060091 - JDMuscleHigh Flow Replacement Panel Filtersgrm060091](//jdmuscleusa.com/cdn/shop/products/grimmspeed-08-21-wrx-08-18-sti-09-18-forester-13-17-crosstrek-05-17-legacy-dry-con-panel-filter-060091-3575296.jpg?v=1781013196&width=220)
Grimmspeed DRY-CON Panel Filter | 060091
Fits: 08-21 WRX / 08-18 STI / 09-18 Forester / 13-17 Crosstrek / 05-17 Legacy
Regular price $92.00Sale price $92.00 Regular priceUnit price per$92.00 -
GrimmSpeed Downpipe to Catback 3in Gasket - Universal | 022001
Regular price $42.00Sale price $42.00 Regular priceUnit price per$42.00 -
![Grimmspeed [08 - 21 WRX/STI, 05 - 09 LGT, 13 - 21 BRZ] 12MM Two Position Exhaust Hanger (Set of 4) | 070047 - JDMuscleExhaust Hangersgrm070047](//jdmuscleusa.com/cdn/shop/files/grimmspeed-08-21-wrxsti-05-09-lgt-13-21-brz-12mm-two-position-exhaust-hanger-set-of-4-070047-5797139.jpg?v=1770328223&width=220)
![Grimmspeed [08 - 21 WRX/STI, 05 - 09 LGT, 13 - 21 BRZ] 12MM Two Position Exhaust Hanger (Set of 4) | 070047 - JDMuscleExhaust Hangersgrm070047](//jdmuscleusa.com/cdn/shop/files/grimmspeed-08-21-wrxsti-05-09-lgt-13-21-brz-12mm-two-position-exhaust-hanger-set-of-4-070047-5761858.jpg?v=1770328224&width=220)
Grimmspeed 12MM Two Position Exhaust Hanger (Set of 4) | 070047
Fits: 08-21 WRX/STI, 05-09 LGT, 13-21 BRZ
Regular price $66.00Sale price $66.00 Regular priceUnit price per$66.00 -
![COBB [08 - 14 WRX, 08 - 21 STI, 05 - 09 Legacy GT, 09 - 13 Forester XT, 05 - 09 Outback XT] 3 - Port Boost Control Solenoid (BCS)| 715750 - JDMuscleBoost Control Solenoidscobb715750](//jdmuscleusa.com/cdn/shop/products/cobb-08-14-wrx-08-21-sti-05-09-legacy-gt-09-13-forester-xt-05-09-outback-xt-3-port-boost-control-solenoid-bcs-715750-7295743.jpg?v=1770336560&width=220)
![COBB [08 - 14 WRX, 08 - 21 STI, 05 - 09 Legacy GT, 09 - 13 Forester XT, 05 - 09 Outback XT] 3 - Port Boost Control Solenoid (BCS)| 715750 - JDMuscleBoost Control Solenoidscobb715750](//jdmuscleusa.com/cdn/shop/products/cobb-08-14-wrx-08-21-sti-05-09-legacy-gt-09-13-forester-xt-05-09-outback-xt-3-port-boost-control-solenoid-bcs-715750-4255865.jpg?v=1770336560&width=220)
In StockCOBB 3-Port Boost Control Solenoid (BCS)
Fits: 08-14 WRX, 08-21 STI, 05-09 LGT/OBXT, 09-13 FXT
Regular price $188.00Sale price $188.00 Regular priceUnit price per$188.00 -
Up to $13.20 off
In StockTial 44mm MVR External Wastegate - Universal
Only 10 leftRegular price From $439.95Sale price From $439.95 Regular priceUnit price per$453.15 -
![COBB [08 - 14 WRX/STI, 07 - 13 FXT, 07 - 12 LGT, 07 - 09 OBXT] V3 Accessport | AP3 - SUB - 003 - JDMusclePlug and Play Engine ManagementcobbAP3-SUB-003](//jdmuscleusa.com/cdn/shop/products/cobb-08-14-wrxsti-07-13-fxt-07-12-lgt-07-09-obxt-v3-accessport-ap3-sub-003-3185435.jpg?v=1770336564&width=220)
![COBB [08 - 14 WRX/STI, 07 - 13 FXT, 07 - 12 LGT, 07 - 09 OBXT] V3 Accessport | AP3 - SUB - 003 - JDMusclePlug and Play Engine ManagementcobbAP3-SUB-003](//jdmuscleusa.com/cdn/shop/products/cobb-08-14-wrxsti-07-13-fxt-07-12-lgt-07-09-obxt-v3-accessport-ap3-sub-003-9313184.jpg?v=1770336565&width=220)
Up to $76 off
In StockCOBB V3 Accessport
Fits: 08-14 WRX/STI, 07-13 FXT, 07-12 LGT, 07-09 OBXT
Regular price $694.00Sale price $694.00 Regular priceUnit price per$770.00 -
![COBB Subaru Redline Fuse Cover [08 - 21 WRX/STI, 2019 S209, 2018 Type RA] - JDMuscleFuse Box CoversCOB844660](//jdmuscleusa.com/cdn/shop/products/cobb-subaru-redline-fuse-cover-08-21-wrxsti-2019-s209-2018-type-ra-2604858.jpg?v=1770330019&width=220)
![COBB Subaru Redline Fuse Cover [08 - 21 WRX/STI, 2019 S209, 2018 Type RA] - JDMuscleFuse Box CoversCOB844660](//jdmuscleusa.com/cdn/shop/products/cobb-subaru-redline-fuse-cover-08-21-wrxsti-2019-s209-2018-type-ra-6909168.jpg?v=1770330019&width=220)
In StockCOBB Subaru Redline Fuse Cover
Fits: 08-21 WRX/STI, 19 S209, 18 Type RA
Only 11 leftRegular price $207.00Sale price $207.00 Regular priceUnit price per$207.00 -
Subaru OEM 1.3 Bar Radiator Cap Subaru All Models
Regular price $76.95Sale price $76.95 Regular priceUnit price per$76.95 -
In StockGrimmSpeed Head to Exhaust Manifold Gaskets | Pair Suabru Turbo Models | 020001
Only 2 leftRegular price $40.00Sale price $40.00 Regular priceUnit price per$40.00 -
Up to $21 offPerrin Upper Radiator Bracket Set Red | PSP-ENG-521
Fits: 08-21 WRX/STI
Regular price From $61.00Sale price From $61.00 Regular priceUnit price per$82.00 -
Up to $10.53 off
In StockARP Head Studs 11mm Subaru Turbo Models | 260-4701
Fits: 02-14 WRX, 04-21 STI, 05-12 LGT, 04-13 FXT
Regular price $293.00Sale price $293.00 Regular priceUnit price per$303.53 -
In StockOVERTAKE Adjustable Exhaust Hanger - 12mm
Fits: 08-26 WRX, 08-21 STI, 13-26 BRZ
Regular price From $13.00Sale price From $13.00 Regular priceUnit price per$13.00 -
![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 $126.00Sale price $126.00 Regular priceUnit price per$126.00 -
![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 4 leftRegular price $233.95Sale price $233.95 Regular priceUnit price per$257.00
![Cobb [06-14 WRX, 04-21 STI, 05-09 LGT, 04-08 FXT] Spark Plug Set One Step Colder | D44700](http://jdmuscleusa.com/cdn/shop/products/b1aa4f1627c975827869c09c78278c4e.jpg?v=1660655055&width=220)
![Cobb [06 - 14 WRX, 04 - 21 STI, 05 - 09 LGT, 04 - 08 FXT] Spark Plug Set One Step Colder - JDMuscleSpark PlugscobbD44700](http://jdmuscleusa.com/cdn/shop/files/cobb-06-14-wrx-04-21-sti-05-09-lgt-04-08-fxt-spark-plug-set-one-step-colder-1998864.jpg?v=1770330674&width=220)
![COBB [08 - 21 STI] Silicone Turbo Inlet V2 - Black - JDMuscleTurbo Inlet Hoses and Pipescobb712450](http://jdmuscleusa.com/cdn/shop/products/cobb-08-21-sti-silicone-turbo-inlet-v2-black-5349387.jpg?v=1770336440&width=220)
![COBB [08 - 21 STI] Silicone Turbo Inlet V2 - Black - JDMuscleTurbo Inlet Hoses and Pipescobb712450](http://jdmuscleusa.com/cdn/shop/products/cobb-08-21-sti-silicone-turbo-inlet-v2-black-7767070.jpg?v=1770336440&width=220)
![Grimmspeed [08-21 WRX / 08-18 STI / 09-18 Forester / 13-17 Crosstrek / 05-17 Legacy] DRY-CON Panel Filter | 060091 - JDMuscleHigh Flow Replacement Panel Filtersgrm060091](http://jdmuscleusa.com/cdn/shop/products/grimmspeed-08-21-wrx-08-18-sti-09-18-forester-13-17-crosstrek-05-17-legacy-dry-con-panel-filter-060091-5367637.jpg?v=1781013196&width=220)
![Grimmspeed [08-21 WRX / 08-18 STI / 09-18 Forester / 13-17 Crosstrek / 05-17 Legacy] DRY-CON Panel Filter | 060091 - JDMuscleHigh Flow Replacement Panel Filtersgrm060091](http://jdmuscleusa.com/cdn/shop/products/grimmspeed-08-21-wrx-08-18-sti-09-18-forester-13-17-crosstrek-05-17-legacy-dry-con-panel-filter-060091-3575296.jpg?v=1781013196&width=220)
![Grimmspeed [08 - 21 WRX/STI, 05 - 09 LGT, 13 - 21 BRZ] 12MM Two Position Exhaust Hanger (Set of 4) | 070047 - JDMuscleExhaust Hangersgrm070047](http://jdmuscleusa.com/cdn/shop/files/grimmspeed-08-21-wrxsti-05-09-lgt-13-21-brz-12mm-two-position-exhaust-hanger-set-of-4-070047-5797139.jpg?v=1770328223&width=220)
![Grimmspeed [08 - 21 WRX/STI, 05 - 09 LGT, 13 - 21 BRZ] 12MM Two Position Exhaust Hanger (Set of 4) | 070047 - JDMuscleExhaust Hangersgrm070047](http://jdmuscleusa.com/cdn/shop/files/grimmspeed-08-21-wrxsti-05-09-lgt-13-21-brz-12mm-two-position-exhaust-hanger-set-of-4-070047-5761858.jpg?v=1770328224&width=220)
![COBB [08 - 14 WRX, 08 - 21 STI, 05 - 09 Legacy GT, 09 - 13 Forester XT, 05 - 09 Outback XT] 3 - Port Boost Control Solenoid (BCS)| 715750 - JDMuscleBoost Control Solenoidscobb715750](http://jdmuscleusa.com/cdn/shop/products/cobb-08-14-wrx-08-21-sti-05-09-legacy-gt-09-13-forester-xt-05-09-outback-xt-3-port-boost-control-solenoid-bcs-715750-7295743.jpg?v=1770336560&width=220)
![COBB [08 - 14 WRX, 08 - 21 STI, 05 - 09 Legacy GT, 09 - 13 Forester XT, 05 - 09 Outback XT] 3 - Port Boost Control Solenoid (BCS)| 715750 - JDMuscleBoost Control Solenoidscobb715750](http://jdmuscleusa.com/cdn/shop/products/cobb-08-14-wrx-08-21-sti-05-09-legacy-gt-09-13-forester-xt-05-09-outback-xt-3-port-boost-control-solenoid-bcs-715750-4255865.jpg?v=1770336560&width=220)
![COBB [08 - 14 WRX/STI, 07 - 13 FXT, 07 - 12 LGT, 07 - 09 OBXT] V3 Accessport | AP3 - SUB - 003 - JDMusclePlug and Play Engine ManagementcobbAP3-SUB-003](http://jdmuscleusa.com/cdn/shop/products/cobb-08-14-wrxsti-07-13-fxt-07-12-lgt-07-09-obxt-v3-accessport-ap3-sub-003-3185435.jpg?v=1770336564&width=220)
![COBB [08 - 14 WRX/STI, 07 - 13 FXT, 07 - 12 LGT, 07 - 09 OBXT] V3 Accessport | AP3 - SUB - 003 - JDMusclePlug and Play Engine ManagementcobbAP3-SUB-003](http://jdmuscleusa.com/cdn/shop/products/cobb-08-14-wrxsti-07-13-fxt-07-12-lgt-07-09-obxt-v3-accessport-ap3-sub-003-9313184.jpg?v=1770336565&width=220)
![COBB Subaru Redline Fuse Cover [08 - 21 WRX/STI, 2019 S209, 2018 Type RA] - JDMuscleFuse Box CoversCOB844660](http://jdmuscleusa.com/cdn/shop/products/cobb-subaru-redline-fuse-cover-08-21-wrxsti-2019-s209-2018-type-ra-2604858.jpg?v=1770330019&width=220)
![COBB Subaru Redline Fuse Cover [08 - 21 WRX/STI, 2019 S209, 2018 Type RA] - JDMuscleFuse Box CoversCOB844660](http://jdmuscleusa.com/cdn/shop/products/cobb-subaru-redline-fuse-cover-08-21-wrxsti-2019-s209-2018-type-ra-6909168.jpg?v=1770330019&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)