Optimize your Subaru STI 2015-2021 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.
2015-2021 Subaru WRX STI Engine Parts
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NRG Fender Washer Kit FW-800 Red 8mm - Universal | FW-800RD
Regular price $33.00Sale price $33.00 Regular priceUnit price per$33.00 -
NRG Fender Washer Kit FW-800 Silver 8mm - Universal | FW-800SL
Regular price $33.00Sale price $33.00 Regular priceUnit price per$33.00 -
Up to $0.54 off
In StockTorque Solution Tial 38mm Wastegate Outlet Flange - Universal
Only 7 leftRegular price $25.00Sale price $25.00 Regular priceUnit price per$25.54 -
Up to $4.43 offTorque Solution Greddy BOV Clamp on Adapter - Universal
Regular price From $39.00Sale price From $39.00 Regular priceUnit price per$43.32 -
Up to $4.43 offTorque Solution 38mm to 44mm Vband MV-R Wastegate Adapter - Universal
Regular price $40.00Sale price $40.00 Regular priceUnit price per$44.43 -
Up to $4.43 offTorque Solution 38mm 2bolt to 38mm Vband MVS Wastegate Adapter - Universal
Regular price $40.00Sale price $40.00 Regular priceUnit price per$44.43 -
Up to $7.99 off
In StockTorque Solution Greddy Blow Off Valve Adapter w/ Plug WRX 2002-2007 / STI 2004-2019
Only 5 leftRegular price $42.00Sale price $42.00 Regular priceUnit price per$49.99 -
Up to $4.99 offTorque Solution 02-07 WRX / 04-21 STI Tial Blow Off Valve Adapter w/Plug | TS-SU-TIALC
Regular price $45.00Sale price $45.00 Regular priceUnit price per$49.99 -
Up to $4.43 off
In StockTorque Solution HKS BOV Clamp on Adapter: Universal
Only 9 leftRegular price From $39.00Sale price From $39.00 Regular priceUnit price per$43.32 -
Up to $4.43 offTorque Solution Tial BOV Modular Weld-On Flange Kit Aluminum - Universal
Regular price $40.00Sale price $40.00 Regular priceUnit price per$44.43 -
Up to $4.43 offTorque Solution Tial BOV 1.5-inch Modular Clamp on Adapter - Universal
Regular price $40.00Sale price $40.00 Regular priceUnit price per$44.43 -
Up to $4.43 offTorque Solution Tial BOV 1.0in Modular Clamp on Adapter - Universal
Regular price $40.00Sale price $40.00 Regular priceUnit price per$44.43 -
![Torque Solution [02-07 WRX, 04-21 STI, 04-08 FXT] Turbo Inlet Hose - Red | TS-SU-463RD](//jdmuscleusa.com/cdn/shop/products/torque-solution-turbo-inlet-hose-red-02-07-subaru-wrx-04-19-sti-05-09-legacy-gt-04-13-ftx-turbo-inlet-hoses-and-pipes-torque-solution-tqsts-su-463rd.jpg?v=1614519038&width=220)
![Torque Solution [02-07 WRX, 04-21 STI, 04-08 FXT] Turbo Inlet Hose - Red | TS-SU-463RD](//jdmuscleusa.com/cdn/shop/files/torque-solution-turbo-inlet-hose-red-2002-2007-wrx-2004-2021-sti-2004-2008-forester-xt-ts-su-463rd-888855_557x375_55de504c-abb3-4765-8a6d-acff69a7991c.jpg?v=1689965451&width=220)
Up to $60.77 off
In StockTorque Solution Turbo Inlet Hose - Red | TS-SU-463RD
Fits: 02-07 WRX, 04-21 STI, 04-08 FXT
Only 3 leftRegular price $217.00Sale price $217.00 Regular priceUnit price per$277.77 -
![Torque Solution [02-07 WRX, 04-21 STI, 04-08 FTX] Turbo Inlet Hose - Blue | TS-SU-463BU](//jdmuscleusa.com/cdn/shop/products/torque-solution-turbo-inlet-hose-blue-02-07-subaru-wrx-04-19-sti-05-09-legacy-gt-04-13-ftx-turbo-inlet-hoses-and-pipes-torque-solution-tqsts-su-463bu.jpg?v=1614519037&width=220)
![Torque Solution [02-07 WRX, 04-21 STI, 04-08 FTX] Turbo Inlet Hose - Blue | TS-SU-463BU](//jdmuscleusa.com/cdn/shop/files/torque-solution-turbo-inlet-hose-blue-2002-2007-wrx-2004-2021-sti-2004-2008-forester-xt-ts-su-463bu-828431_557x447_8c41d9f4-a450-4013-a185-9298f226e2db.jpg?v=1690844292&width=220)
Up to $50.77 offTorque Solution Turbo Inlet Hose - Blue | TS-SU-463BU
Fits: 02-07 WRX, 04-21 STI, 04-08 FTX
Regular price $227.00Sale price $227.00 Regular priceUnit price per$277.77 -
Up to $6.54 offTorque Solution 02-07 WRX / 04-21 STI Greddy Blow Off Valve Adapter w/ Recirculation Adapter | TS-SU-GRDA
Regular price $49.00Sale price $49.00 Regular priceUnit price per$55.54 -
Up to $4.21 off
In StockTorque Solution Tial Black Blow Off Valve Adapter WRX 2002-2007 / STI 2004-2019
Only 1 leftRegular price $38.00Sale price $38.00 Regular priceUnit price per$42.21
![Torque Solution [02-07 WRX, 04-21 STI, 04-08 FXT] Turbo Inlet Hose - Red | TS-SU-463RD](http://jdmuscleusa.com/cdn/shop/products/torque-solution-turbo-inlet-hose-red-02-07-subaru-wrx-04-19-sti-05-09-legacy-gt-04-13-ftx-turbo-inlet-hoses-and-pipes-torque-solution-tqsts-su-463rd.jpg?v=1614519038&width=220)
![Torque Solution [02-07 WRX, 04-21 STI, 04-08 FXT] Turbo Inlet Hose - Red | TS-SU-463RD](http://jdmuscleusa.com/cdn/shop/files/torque-solution-turbo-inlet-hose-red-2002-2007-wrx-2004-2021-sti-2004-2008-forester-xt-ts-su-463rd-888855_557x375_55de504c-abb3-4765-8a6d-acff69a7991c.jpg?v=1689965451&width=220)
![Torque Solution [02-07 WRX, 04-21 STI, 04-08 FTX] Turbo Inlet Hose - Blue | TS-SU-463BU](http://jdmuscleusa.com/cdn/shop/products/torque-solution-turbo-inlet-hose-blue-02-07-subaru-wrx-04-19-sti-05-09-legacy-gt-04-13-ftx-turbo-inlet-hoses-and-pipes-torque-solution-tqsts-su-463bu.jpg?v=1614519037&width=220)
![Torque Solution [02-07 WRX, 04-21 STI, 04-08 FTX] Turbo Inlet Hose - Blue | TS-SU-463BU](http://jdmuscleusa.com/cdn/shop/files/torque-solution-turbo-inlet-hose-blue-2002-2007-wrx-2004-2021-sti-2004-2008-forester-xt-ts-su-463bu-828431_557x447_8c41d9f4-a450-4013-a185-9298f226e2db.jpg?v=1690844292&width=220)
