2015-2021 Subaru STI Engine Parts & Upgrades
Shop 2015-2021 subaru sti engine parts and performance upgrades at JDMuscle. We carry the top brands with guaranteed fitment for your 2015-2021 Subaru STI.
2015-2021 Subaru STI Engine
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Up to $156 off
In StockPLM Power Driven Subaru EWG 3-Bolt Up Pipe & Dump Tube 38mm WRX 2002-2014 / STI 2004-2020 / Baja Turbo 2004-2006 / Forester XT 2004-2013 / Legacy GT 2005-2009 / Outback XT 2005-2009 | PLM-SUB-UP-PIPE-EWG-38MM-3B
Only 8 leftRegular price $339.00Sale price $339.00 Regular priceUnit price per$495.00 -
Process West 06-21 STI Intake Manifold Street Version Black | PWIM002B
Regular price $2,333.00Sale price $2,333.00 Regular priceUnit price per$2,333.00 -
In StockGates Micro-V Belt Alternator & Power Steering Belt
Fits: 02-14 WRX, 04-21 STI
Only 2 leftRegular price $29.00Sale price $29.00 Regular priceUnit price per$29.00 -
Up to $1.10 offTorque Solution Pinch Weld Jack Pad - Universal
Regular price $40.00Sale price $40.00 Regular priceUnit price per$41.10 -
In StockWalbro 450lph E85 Compatiable Fuel Pump & Installation Kit | TIA485-2 - Universal
Regular price $249.00Sale price $249.00 Regular priceUnit price per$249.00 -
![GrimmSpeed [02-07 WRX / 04-21 STI] Air/Oil Separator | 078006](//jdmuscleusa.com/cdn/shop/products/grimmspeed-air-oil-separator-subaru-sti-2004-2020-078006-air-oil-separators-grimmspeed-red-078006r-2.jpg?v=1614675538&width=220)
![GrimmSpeed [02-07 WRX / 04-21 STI] Air/Oil Separator | 078006](//jdmuscleusa.com/cdn/shop/products/grimmspeed-air-oil-separator-subaru-sti-2004-2020-078006-air-oil-separators-grimmspeed-3.jpg?v=1614658553&width=220)
In StockGrimmSpeed Air/Oil Separator | 078006
Fits: 02-07 WRX / 04-21 STI
Only 2 leftRegular price $426.00Sale price $426.00 Regular priceUnit price per$426.00 -
In StockRemark Stainless Steel Axle Back w/ Single Wall 4 Inch Polished Tips | RO-TSVA-S4
Fits: 15-21 WRX/STI
Regular price $635.00Sale price $635.00 Regular priceUnit price per$635.00 -
Up to $41.05 off
In StockMishimoto X-Line Aluminum Radiator
Fits: 08-14 WRX, 08-21 STI
Only 6 leftRegular price $409.95Sale price $409.95 Regular priceUnit price per$451.00 -
Up to $2.70 off
In StockCusco Oil Drain Plug M20x1.5 - Universal
Regular price $24.30Sale price $24.30 Regular priceUnit price per$27.00 -
![COBB [15 - 21 WRX/STI, 18 STI TYPE RA, 19 STI S209] Redline Gloss Carbon Fender Shrouds - JDMuscleFender Shroudscobb725160](//jdmuscleusa.com/cdn/shop/files/cobb-15-21-wrxsti-18-sti-type-ra-19-sti-s209-redline-gloss-carbon-fender-shrouds-8205182.jpg?v=1770321315&width=220)
In StockCobb Tuning Redline Gloss Carbon Fender Shrouds
Fits: 15-21 WRX/STI, 18 STI Type RA, 19 STI S209
Only 11 leftRegular price $395.00Sale price $395.00 Regular priceUnit price per$395.00 -
![Perrin Performance [08 - 14 Subaru Impreza, 15 - 21 WRX, STI] Replacement Foam Filter - JDMuscleAir Intake Filter ReplacementsperX-PSP-INT-324-2](//jdmuscleusa.com/cdn/shop/files/perrin-performance-08-14-subaru-impreza-15-21-wrx-sti-replacement-foam-filter-4247907.jpg?v=1770324910&width=220)
![Perrin Performance [08 - 14 Subaru Impreza, 15 - 21 WRX, STI] Replacement Foam Filter - JDMuscleAir Intake Filter ReplacementsperX-PSP-INT-324-2](//jdmuscleusa.com/cdn/shop/files/perrin-performance-08-14-subaru-impreza-15-21-wrx-sti-replacement-foam-filter-8308968.jpg?v=1770324909&width=220)
Up to $13.95 off
In StockPerrin Replacement Foam Filter
Fits: 08-14 Impreza, 15-21 WRX/STI
Only 11 leftRegular price $79.05Sale price $79.05 Regular priceUnit price per$93.00 -
![Cobb [08 - 14 WRX, 08 - 21 STI, 05 - 09 LGT] HIGH FLOW FUEL PUMP - JDMuscleFuel Pumps and AccessoriesCBT-315450](//jdmuscleusa.com/cdn/shop/files/cobb-08-14-wrx-08-21-sti-05-09-lgt-high-flow-fuel-pump-5483990.jpg?v=1770327073&width=220)
![Cobb [08 - 14 WRX, 08 - 21 STI, 05 - 09 LGT] HIGH FLOW FUEL PUMP - JDMuscleFuel Pumps and AccessoriesCBT-315450](//jdmuscleusa.com/cdn/shop/files/cobb-08-14-wrx-08-21-sti-05-09-lgt-high-flow-fuel-pump-3671235.jpg?v=1770327073&width=220)
In StockCobb Tuning High Flow Fuel Pump
Fits: 08-14 WRX, 08-21 STI, 05-09 LGT
Regular price $193.00Sale price $193.00 Regular priceUnit price per$193.00 -
In StockGrimmspeed 04-21 STI / 02-07 WRX V2 Bypass Valve Black | 126032BLK
Only 1 leftRegular price $352.00Sale price $352.00 Regular priceUnit price per$352.00 -
![Radium Engineering [08-21 WRX/STI, 05-09 LGT/OBXT] V2 Fuel Pump Hanger for use w/ Walbro 450LPH | F90000267/274/285 Pumps - JDMuscleFuel Pumps and Accessoriesrad20-0782-00](//jdmuscleusa.com/cdn/shop/products/radium-engineering-08-21-wrxsti-05-09-lgtobxt-v2-fuel-pump-hanger-for-use-w-walbro-450lph-f90000267274285-pumps-6792551.jpg?v=1781013619&width=220)
![Radium Engineering [08-21 WRX/STI, 05-09 LGT/OBXT] V2 Fuel Pump Hanger for use w/ Walbro 450LPH | F90000267/274/285 Pumps - JDMuscleFuel Pumps and Accessoriesrad20-0782-00](//jdmuscleusa.com/cdn/shop/products/radium-engineering-08-21-wrxsti-05-09-lgtobxt-v2-fuel-pump-hanger-for-use-w-walbro-450lph-f90000267274285-pumps-8701445.jpg?v=1781013620&width=220)
Up to $27 off
In StockRadium Engineering V2 Fuel Pump Hanger for use w/ Walbro 450LPH | F90000267/274/285 Pumps
Fits: 08-21 WRX/STI, 05-09 LGT/OBXT
Only 6 leftRegular price $512.95Sale price $512.95 Regular priceUnit price per$539.95 -
![Grimmspeed [08-21 STI] Electronic Boost Control Solenoid Cover Red - JDMuscleBoost Control Solenoid Coversgrm112000.1](//jdmuscleusa.com/cdn/shop/products/grimmspeed-08-21-sti-electronic-boost-control-solenoid-cover-red-4789289.jpg?v=1786515852&width=220)
![Grimmspeed [08-21 STI] Electronic Boost Control Solenoid Cover Red - JDMuscleBoost Control Solenoid Coversgrm112000.1](//jdmuscleusa.com/cdn/shop/products/grimmspeed-08-21-sti-electronic-boost-control-solenoid-cover-red-9093638.jpg?v=1786515852&width=220)
In StockGrimmspeed Electronic Boost Control Solenoid Cover Red
Fits: 08-21 STI
Only 1 leftRegular price $87.00Sale price $87.00 Regular priceUnit price per$87.00 -
In StockHKS 06-14 WRX / 04-21 STI Stainless Steel Equal Length Exhaust Manifold | 14019-AF002
Regular price $809.00Sale price $809.00 Regular priceUnit price per$809.00
![GrimmSpeed [02-07 WRX / 04-21 STI] Air/Oil Separator | 078006](http://jdmuscleusa.com/cdn/shop/products/grimmspeed-air-oil-separator-subaru-sti-2004-2020-078006-air-oil-separators-grimmspeed-red-078006r-2.jpg?v=1614675538&width=220)
![GrimmSpeed [02-07 WRX / 04-21 STI] Air/Oil Separator | 078006](http://jdmuscleusa.com/cdn/shop/products/grimmspeed-air-oil-separator-subaru-sti-2004-2020-078006-air-oil-separators-grimmspeed-3.jpg?v=1614658553&width=220)
![COBB [15 - 21 WRX/STI, 18 STI TYPE RA, 19 STI S209] Redline Gloss Carbon Fender Shrouds - JDMuscleFender Shroudscobb725160](http://jdmuscleusa.com/cdn/shop/files/cobb-15-21-wrxsti-18-sti-type-ra-19-sti-s209-redline-gloss-carbon-fender-shrouds-8205182.jpg?v=1770321315&width=220)
![Perrin Performance [08 - 14 Subaru Impreza, 15 - 21 WRX, STI] Replacement Foam Filter - JDMuscleAir Intake Filter ReplacementsperX-PSP-INT-324-2](http://jdmuscleusa.com/cdn/shop/files/perrin-performance-08-14-subaru-impreza-15-21-wrx-sti-replacement-foam-filter-4247907.jpg?v=1770324910&width=220)
![Perrin Performance [08 - 14 Subaru Impreza, 15 - 21 WRX, STI] Replacement Foam Filter - JDMuscleAir Intake Filter ReplacementsperX-PSP-INT-324-2](http://jdmuscleusa.com/cdn/shop/files/perrin-performance-08-14-subaru-impreza-15-21-wrx-sti-replacement-foam-filter-8308968.jpg?v=1770324909&width=220)
![Cobb [08 - 14 WRX, 08 - 21 STI, 05 - 09 LGT] HIGH FLOW FUEL PUMP - JDMuscleFuel Pumps and AccessoriesCBT-315450](http://jdmuscleusa.com/cdn/shop/files/cobb-08-14-wrx-08-21-sti-05-09-lgt-high-flow-fuel-pump-5483990.jpg?v=1770327073&width=220)
![Cobb [08 - 14 WRX, 08 - 21 STI, 05 - 09 LGT] HIGH FLOW FUEL PUMP - JDMuscleFuel Pumps and AccessoriesCBT-315450](http://jdmuscleusa.com/cdn/shop/files/cobb-08-14-wrx-08-21-sti-05-09-lgt-high-flow-fuel-pump-3671235.jpg?v=1770327073&width=220)
![Radium Engineering [08-21 WRX/STI, 05-09 LGT/OBXT] V2 Fuel Pump Hanger for use w/ Walbro 450LPH | F90000267/274/285 Pumps - JDMuscleFuel Pumps and Accessoriesrad20-0782-00](http://jdmuscleusa.com/cdn/shop/products/radium-engineering-08-21-wrxsti-05-09-lgtobxt-v2-fuel-pump-hanger-for-use-w-walbro-450lph-f90000267274285-pumps-6792551.jpg?v=1781013619&width=220)
![Radium Engineering [08-21 WRX/STI, 05-09 LGT/OBXT] V2 Fuel Pump Hanger for use w/ Walbro 450LPH | F90000267/274/285 Pumps - JDMuscleFuel Pumps and Accessoriesrad20-0782-00](http://jdmuscleusa.com/cdn/shop/products/radium-engineering-08-21-wrxsti-05-09-lgtobxt-v2-fuel-pump-hanger-for-use-w-walbro-450lph-f90000267274285-pumps-8701445.jpg?v=1781013620&width=220)
![Grimmspeed [08-21 STI] Electronic Boost Control Solenoid Cover Red - JDMuscleBoost Control Solenoid Coversgrm112000.1](http://jdmuscleusa.com/cdn/shop/products/grimmspeed-08-21-sti-electronic-boost-control-solenoid-cover-red-4789289.jpg?v=1786515852&width=220)
![Grimmspeed [08-21 STI] Electronic Boost Control Solenoid Cover Red - JDMuscleBoost Control Solenoid Coversgrm112000.1](http://jdmuscleusa.com/cdn/shop/products/grimmspeed-08-21-sti-electronic-boost-control-solenoid-cover-red-9093638.jpg?v=1786515852&width=220)
