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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![Mishimoto [15-21 WRX/STI] Aluminum Radiator Stay - Red - JDMuscleRadiator AccessoriesmisMMRS-WRX-15ARD](//jdmuscleusa.com/cdn/shop/files/mishimoto-15-21-wrxsti-aluminum-radiator-stay-red-6537870.jpg?v=1789202170&width=220)
![Mishimoto [15-21 WRX/STI] Aluminum Radiator Stay - Red - JDMuscleRadiator AccessoriesmisMMRS-WRX-15ARD](//jdmuscleusa.com/cdn/shop/files/mishimoto-15-21-wrxsti-aluminum-radiator-stay-red-4372437.jpg?v=1789202170&width=220)
Up to $4.05 offMishimoto Aluminum Radiator Stay - Red
Fits: 15-21 WRX/STI
Regular price $40.95Sale price $40.95 Regular priceUnit price per$45.00 -
In StockTR Subaru WRX/STi 2008+ Oil Cooler Kit With Thermostat
Regular price $660.00Sale price $660.00 Regular priceUnit price per$660.00 -
TR Subaru Single Scroll Unequal Length Exhaust Manifold with 3 bolts Up-pipe Stock Replacement for EJ20/EJ25
Regular price $915.00Sale price $915.00 Regular priceUnit price per$915.00 -
In StockTR Silicone Turbo Inlet for Subaru Impreza WRX/STI 2008-2018
Only 17 leftRegular price $235.00Sale price $235.00 Regular priceUnit price per$235.00 -
In StockTR Subaru WRX/STI Twin Scroll High Flow Catless Downpipe for 2008-2014 WRX and 2008-2021 STI (TR-ES1006)
Regular price $720.00Sale price $720.00 Regular priceUnit price per$720.00 -
In StockTR Subaru 2-Bolt Up-Pipe
Only 2 leftRegular price $350.00Sale price $350.00 Regular priceUnit price per$350.00 -
In StockTR Equal Length Exhaust Manifold w/ Up-pipe for Subaru
Only 5 leftRegular price $915.00Sale price $915.00 Regular priceUnit price per$915.00 -
In StockTR Gen 2 Twin Scroll Equal Length Exhaust Manifold with 3 Bolts Up-Pipe for EJ20/25 (TR-ES1002)
Regular price $915.00Sale price $915.00 Regular priceUnit price per$915.00 -
![OVERTAKE [02-14 WRX, 04-21 STI, 04-13 FXT, 05-09 OBXT/LGT] Turbo Heatshield Reflective Gold Foil - JDMuscleHeat Isolation & Heat WrapA10927](//jdmuscleusa.com/cdn/shop/files/overtake-02-14-wrx-04-21-sti-04-13-fxt-05-09-obxtlgt-turbo-heatshield-reflective-gold-foil-5268979.jpg?v=1786472175&width=220)
![OVERTAKE [02-14 WRX, 04-21 STI, 04-13 FXT, 05-09 OBXT/LGT] Turbo Heatshield Reflective Gold Foil - JDMuscleHeat Isolation & Heat WrapA10927](//jdmuscleusa.com/cdn/shop/files/overtake-02-14-wrx-04-21-sti-04-13-fxt-05-09-obxtlgt-turbo-heatshield-reflective-gold-foil-9592004.jpg?v=1786472176&width=220)
In StockOVERTAKE Turbo Heatshield Reflective Gold Foil
Fits: 02-14 WRX, 04-21 STI, 04-13 FXT, 05-09 OBXT/LGT
Regular price $45.00Sale price $45.00 Regular priceUnit price per -
![OVERTAKE [04-21 STI, 06-07 WRX] Drive-By-Wire Throttle Body Gasket - JDMuscleGasketsA10479](//jdmuscleusa.com/cdn/shop/files/overtake-04-21-sti-06-07-wrx-drive-by-wire-throttle-body-gasket-6470569.jpg?v=1786472176&width=220)
![OVERTAKE [04-21 STI, 06-07 WRX] Drive-By-Wire Throttle Body Gasket - JDMuscleGasketsA10479](//jdmuscleusa.com/cdn/shop/files/overtake-04-21-sti-06-07-wrx-drive-by-wire-throttle-body-gasket-1834695.jpg?v=1786472176&width=220)
In StockOVERTAKE Drive-By-Wire Throttle Body Gasket
Fits: 04-21 STI, 06-07 WRX
Regular price $9.00Sale price $9.00 Regular priceUnit price per$9.00 -
FactionFab MLS Subaru EJ Up-Pipe to Turbo Gasket
Regular price $15.00Sale price $15.00 Regular priceUnit price per$15.00 -
In StockFactionFab MLS Subaru EJ Exhaust Manifold to Up-Pipe Gasket
Only 2 leftRegular price $14.00Sale price $14.00 Regular priceUnit price per$14.00 -
In StockFactionFab Subaru Timing Belt Guide EJ Motors
Only 4 leftRegular price $45.00Sale price $45.00 Regular priceUnit price per$45.00 -
In StockFactionFab V2 FR-Spec Coilovers
Fits: 08-14 WRX
Only 6 leftRegular price $1,450.00Sale price $1,450.00 Regular priceUnit price per$1,350.00 -
FactionFab FR-Spec Coilover Replacement Rear Strut. To be used with FFA1.10176.2/FFA1.10177.2
Fits: 08-14 STI, 15-21 WRX/STI
Regular price $150.00Sale price $150.00 Regular priceUnit price per$150.00 -
![[18 - 21 STI] FactionFab Slotted Rear Rotor V2 Dual Drilled 5x100/114 - JDMuscleBrake RotorsFFA1.10297.1](//jdmuscleusa.com/cdn/shop/files/18-21-sti-factionfab-slotted-rear-rotor-v2-dual-drilled-5x100114-9254905.jpg?v=1772881220&width=220)
![[18 - 21 STI] FactionFab Slotted Rear Rotor V2 Dual Drilled 5x100/114 - JDMuscleBrake RotorsFFA1.10297.1](//jdmuscleusa.com/cdn/shop/files/18-21-sti-factionfab-slotted-rear-rotor-v2-dual-drilled-5x100114-1851849.jpg?v=1772881220&width=220)
In StockFactionFab Slotted Rear Rotor V2 Dual Drilled 5x100/114
Fits: 18-21 STI
Regular price $185.00Sale price $185.00 Regular priceUnit price per$185.00
![Mishimoto [15-21 WRX/STI] Aluminum Radiator Stay - Red - JDMuscleRadiator AccessoriesmisMMRS-WRX-15ARD](http://jdmuscleusa.com/cdn/shop/files/mishimoto-15-21-wrxsti-aluminum-radiator-stay-red-6537870.jpg?v=1789202170&width=220)
![Mishimoto [15-21 WRX/STI] Aluminum Radiator Stay - Red - JDMuscleRadiator AccessoriesmisMMRS-WRX-15ARD](http://jdmuscleusa.com/cdn/shop/files/mishimoto-15-21-wrxsti-aluminum-radiator-stay-red-4372437.jpg?v=1789202170&width=220)
![OVERTAKE [02-14 WRX, 04-21 STI, 04-13 FXT, 05-09 OBXT/LGT] Turbo Heatshield Reflective Gold Foil - JDMuscleHeat Isolation & Heat WrapA10927](http://jdmuscleusa.com/cdn/shop/files/overtake-02-14-wrx-04-21-sti-04-13-fxt-05-09-obxtlgt-turbo-heatshield-reflective-gold-foil-5268979.jpg?v=1786472175&width=220)
![OVERTAKE [02-14 WRX, 04-21 STI, 04-13 FXT, 05-09 OBXT/LGT] Turbo Heatshield Reflective Gold Foil - JDMuscleHeat Isolation & Heat WrapA10927](http://jdmuscleusa.com/cdn/shop/files/overtake-02-14-wrx-04-21-sti-04-13-fxt-05-09-obxtlgt-turbo-heatshield-reflective-gold-foil-9592004.jpg?v=1786472176&width=220)
![OVERTAKE [04-21 STI, 06-07 WRX] Drive-By-Wire Throttle Body Gasket - JDMuscleGasketsA10479](http://jdmuscleusa.com/cdn/shop/files/overtake-04-21-sti-06-07-wrx-drive-by-wire-throttle-body-gasket-6470569.jpg?v=1786472176&width=220)
![OVERTAKE [04-21 STI, 06-07 WRX] Drive-By-Wire Throttle Body Gasket - JDMuscleGasketsA10479](http://jdmuscleusa.com/cdn/shop/files/overtake-04-21-sti-06-07-wrx-drive-by-wire-throttle-body-gasket-1834695.jpg?v=1786472176&width=220)
![[18 - 21 STI] FactionFab Slotted Rear Rotor V2 Dual Drilled 5x100/114 - JDMuscleBrake RotorsFFA1.10297.1](http://jdmuscleusa.com/cdn/shop/files/18-21-sti-factionfab-slotted-rear-rotor-v2-dual-drilled-5x100114-9254905.jpg?v=1772881220&width=220)
![[18 - 21 STI] FactionFab Slotted Rear Rotor V2 Dual Drilled 5x100/114 - JDMuscleBrake RotorsFFA1.10297.1](http://jdmuscleusa.com/cdn/shop/files/18-21-sti-factionfab-slotted-rear-rotor-v2-dual-drilled-5x100114-1851849.jpg?v=1772881220&width=220)