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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In StockRemark Boso Axle Back Exhaust w/ Stainless Steel Single Wall Tip WRX/STI 15-2019
Only 5 leftRegular price $695.00Sale price $695.00 Regular priceUnit price per$695.00 -
Up to $15 off
In StockAEM Fuel Pump 340lph - Universal
Regular price $117.95Sale price $117.95 Regular priceUnit price per$132.95 -
In StockOVERTAKE TMIC Silicone Coupler Kit - 2004-2021 STI, 2002-2007 WRX, 2004-2008 Forester XT w/ STI Style TMIC
Regular price $88.00Sale price $88.00 Regular priceUnit price per$88.00 -
![PERRIN Upper Radiator Bracket Set - Blue [15 - 21 WRX/STI, 13 - 17 Crosstrek, 12 - 16 Impreza] - JDMuscleRadiator AccessoriesperPSP-ENG-523BL](//jdmuscleusa.com/cdn/shop/files/perrin-upper-radiator-bracket-set-blue-15-21-wrxsti-13-17-crosstrek-12-16-impreza-6921685.jpg?v=1770313940&width=220)
![PERRIN Upper Radiator Bracket Set - Blue [15 - 21 WRX/STI, 13 - 17 Crosstrek, 12 - 16 Impreza] - JDMuscleRadiator AccessoriesperPSP-ENG-523BL](//jdmuscleusa.com/cdn/shop/files/perrin-upper-radiator-bracket-set-blue-15-21-wrxsti-13-17-crosstrek-12-16-impreza-3083281.jpg?v=1770313940&width=220)
Up to $11.25 off
In StockPerrin Upper Radiator Bracket Set - Blue
Fits: 15-21 WRX/STI, 13-17 Crosstrek, 12-16 Impreza
Only 10 leftRegular price $63.75Sale price $63.75 Regular priceUnit price per$75.00 -
In StockIAG Replacement Hardware Set for IAG Top Feed Fuel Rails
Only 1 leftRegular price $48.00Sale price $48.00 Regular priceUnit price per$48.00 -
![Cobb [Subaru] Silicone Exhaust Hanger 12mm x 35mm - JDMuscleExhaust HangerscobbUNI-001-272](//jdmuscleusa.com/cdn/shop/files/cobb-subaru-silicone-exhaust-hanger-12mm-x-35mm-3590037.jpg?v=1770322211&width=220)
In StockCobb Tuning Silicone Exhaust Hanger 12mm x 35mm
Fits: 08-26 WRX, 08-21 STI, 12-26 BRZ/GR86/FR-S, 05-09 Legacy GT/Outback XT, 14-18 Forester XT
Regular price $20.00Sale price $20.00 Regular priceUnit price per$20.00 -
![CSF [08 - 21 WRX/STI] 2 - Row 42mm Race - Spec All Aluminum Radiator - Black | 7095B - JDMuscleRadiatorscsf7095B](//jdmuscleusa.com/cdn/shop/files/csf-08-21-wrxsti-2-row-42mm-race-spec-all-aluminum-radiator-black-7095b-8634755.jpg?v=1770324975&width=220)
![CSF [08 - 21 WRX/STI] 2 - Row 42mm Race - Spec All Aluminum Radiator - Black | 7095B - JDMuscleRadiatorscsf7095B](//jdmuscleusa.com/cdn/shop/files/csf-08-21-wrxsti-2-row-42mm-race-spec-all-aluminum-radiator-black-7095b-6844231.jpg?v=1770324975&width=220)
Up to $24 off
In StockCSF 2-Row 42mm Race-Spec All Aluminum Radiator - Black | 7095B
Fits: 08-21 WRX/STI
Only 15 leftRegular price $485.00Sale price $485.00 Regular priceUnit price per$509.00 -
![Torque Solution [08 - 14 WRX, 08 - 21 STI] Oil Fill Tube Relocation | TS - SU - 757 - JDMuscleOil Control DevicestqsTS-SU-757](//jdmuscleusa.com/cdn/shop/files/torque-solution-08-14-wrx-08-21-sti-oil-fill-tube-relocation-ts-su-757-7338747.jpg?v=1770325029&width=220)
![Torque Solution [08 - 14 WRX, 08 - 21 STI] Oil Fill Tube Relocation | TS - SU - 757 - JDMuscleOil Control DevicestqsTS-SU-757](//jdmuscleusa.com/cdn/shop/files/torque-solution-08-14-wrx-08-21-sti-oil-fill-tube-relocation-ts-su-757-9472488.jpg?v=1770325029&width=220)
Up to $17.77 off
In StockTorque Solution Oil Fill Tube Relocation
Fits: 08-14 WRX, 08-21 STI
Only 17 leftRegular price $160.00Sale price $160.00 Regular priceUnit price per$177.77 -
DELICIOUS TUNING 08+ SUBARU MAF EXTENSION | DT_MAF-V2_EXT
Regular price $35.00Sale price $35.00 Regular priceUnit price per$35.00 -
![Perrin [08 - 21 STI] Boost Solenoid Cover Hyper Pink | PSP - ENG - 161HP - JDMuscleBoost Control Solenoid CoversperPSP-ENG-161HP](//jdmuscleusa.com/cdn/shop/files/perrin-08-21-sti-boost-solenoid-cover-hyper-pink-psp-eng-161hp-9111797.jpg?v=1770327864&width=220)
![Perrin [08 - 21 STI] Boost Solenoid Cover Hyper Pink | PSP - ENG - 161HP - JDMuscleBoost Control Solenoid CoversperPSP-ENG-161HP](//jdmuscleusa.com/cdn/shop/files/perrin-08-21-sti-boost-solenoid-cover-hyper-pink-psp-eng-161hp-2631792.jpg?v=1770327865&width=220)
Up to $12 off
In StockPerrin Boost Solenoid Cover Hyper Pink | PSP-ENG-161HP
Fits: 08-21 STI
Only 4 leftRegular price $68.00Sale price $68.00 Regular priceUnit price per$80.00 -
![Perrin [15 - 21 WRX/STI] Radiator Shroud | With OEM Intake Scoop - Black - JDMuscleNon - CategorizedperPSP-ENG-512-4BK](//jdmuscleusa.com/cdn/shop/products/perrin-15-21-wrxsti-radiator-shroud-with-oem-intake-scoop-black-4441694.jpg?v=1770327921&width=220)
![Perrin [15 - 21 WRX/STI] Radiator Shroud | With OEM Intake Scoop - Black - JDMuscleNon - CategorizedperPSP-ENG-512-4BK](//jdmuscleusa.com/cdn/shop/products/perrin-15-21-wrxsti-radiator-shroud-with-oem-intake-scoop-black-4455470.jpg?v=1770327921&width=220)
Up to $17.55 off
In StockPerrin Radiator Shroud | With OEM Intake Scoop - Black
Fits: 15-21 WRX/STI
Only 4 leftRegular price $99.45Sale price $99.45 Regular priceUnit price per$117.00 -
![Perrin [15 - 21 WRX/STI] Radiator Shroud with OEM Intake Scoop - Hyper Pink | PSP - ENG - 512 - 4HP - JDMuscleRadiator ShroudsperPSP-ENG-512-4HP](//jdmuscleusa.com/cdn/shop/products/perrin-15-21-wrxsti-radiator-shroud-with-oem-intake-scoop-hyper-pink-psp-eng-512-4hp-8991737.jpg?v=1770327921&width=220)
![Perrin [15 - 21 WRX/STI] Radiator Shroud with OEM Intake Scoop - Hyper Pink | PSP - ENG - 512 - 4HP - JDMuscleRadiator ShroudsperPSP-ENG-512-4HP](//jdmuscleusa.com/cdn/shop/products/perrin-15-21-wrxsti-radiator-shroud-with-oem-intake-scoop-hyper-pink-psp-eng-512-4hp-3281667.jpg?v=1770327921&width=220)
Up to $21.75 offPerrin Radiator Shroud | With OEM Intake Scoop - Hyper Pink
Fits: 15-21 WRX/STI
Regular price $123.25Sale price $123.25 Regular priceUnit price per$145.00 -
In StockIAG Performance 02-14 WRX / 04-21 STI / 05-09 LGT / 04-13 FXT V2 Oil Pickup and Oil Control Baffle / Windage Tray Combo | IAG-ENG-2101
Only 1 leftRegular price $329.99Sale price $329.99 Regular priceUnit price per$329.99 -
![FactionFab [15 - 21 WRX, 15 - 18 STI] Axle Back Exhaust Polished Tip | 1.10204.1 - JDMuscleAxle Back Exhausts1.10204.1](//jdmuscleusa.com/cdn/shop/files/factionfab-15-21-wrx-15-18-sti-axle-back-exhaust-polished-tip-1102041-5689418.jpg?v=1770327979&width=220)
![FactionFab [15 - 21 WRX, 15 - 18 STI] Axle Back Exhaust Polished Tip | 1.10204.1 - JDMuscleAxle Back Exhausts1.10204.1](//jdmuscleusa.com/cdn/shop/files/factionfab-15-21-wrx-15-18-sti-axle-back-exhaust-polished-tip-1102041-1324329.jpg?v=1770327979&width=220)
FactionFab Axle Back Exhaust Polished Tip | 1.10204.1
Fits: 15-21 WRX, 15-18 STI
Regular price $390.00Sale price $390.00 Regular priceUnit price per$390.00 -
In StockIAG Performance Replacement Blow Off Valve Elbow Black
Fits: 02-07 WRX, 04-21 STI
Only 1 leftRegular price $59.99Sale price $59.99 Regular priceUnit price per$59.99 -
Up to $9.15 off
In StockPerrin Alternator Pulley - Red
Fits: 06-14 WRX, 07-21 STI, 12-16 Impreza, 06-13 FXT, 05-09 Legacy
Only 1 leftRegular price $51.85Sale price $51.85 Regular priceUnit price per$61.00
![PERRIN Upper Radiator Bracket Set - Blue [15 - 21 WRX/STI, 13 - 17 Crosstrek, 12 - 16 Impreza] - JDMuscleRadiator AccessoriesperPSP-ENG-523BL](http://jdmuscleusa.com/cdn/shop/files/perrin-upper-radiator-bracket-set-blue-15-21-wrxsti-13-17-crosstrek-12-16-impreza-6921685.jpg?v=1770313940&width=220)
![PERRIN Upper Radiator Bracket Set - Blue [15 - 21 WRX/STI, 13 - 17 Crosstrek, 12 - 16 Impreza] - JDMuscleRadiator AccessoriesperPSP-ENG-523BL](http://jdmuscleusa.com/cdn/shop/files/perrin-upper-radiator-bracket-set-blue-15-21-wrxsti-13-17-crosstrek-12-16-impreza-3083281.jpg?v=1770313940&width=220)
![Cobb [Subaru] Silicone Exhaust Hanger 12mm x 35mm - JDMuscleExhaust HangerscobbUNI-001-272](http://jdmuscleusa.com/cdn/shop/files/cobb-subaru-silicone-exhaust-hanger-12mm-x-35mm-3590037.jpg?v=1770322211&width=220)
![CSF [08 - 21 WRX/STI] 2 - Row 42mm Race - Spec All Aluminum Radiator - Black | 7095B - JDMuscleRadiatorscsf7095B](http://jdmuscleusa.com/cdn/shop/files/csf-08-21-wrxsti-2-row-42mm-race-spec-all-aluminum-radiator-black-7095b-8634755.jpg?v=1770324975&width=220)
![CSF [08 - 21 WRX/STI] 2 - Row 42mm Race - Spec All Aluminum Radiator - Black | 7095B - JDMuscleRadiatorscsf7095B](http://jdmuscleusa.com/cdn/shop/files/csf-08-21-wrxsti-2-row-42mm-race-spec-all-aluminum-radiator-black-7095b-6844231.jpg?v=1770324975&width=220)
![Torque Solution [08 - 14 WRX, 08 - 21 STI] Oil Fill Tube Relocation | TS - SU - 757 - JDMuscleOil Control DevicestqsTS-SU-757](http://jdmuscleusa.com/cdn/shop/files/torque-solution-08-14-wrx-08-21-sti-oil-fill-tube-relocation-ts-su-757-7338747.jpg?v=1770325029&width=220)
![Torque Solution [08 - 14 WRX, 08 - 21 STI] Oil Fill Tube Relocation | TS - SU - 757 - JDMuscleOil Control DevicestqsTS-SU-757](http://jdmuscleusa.com/cdn/shop/files/torque-solution-08-14-wrx-08-21-sti-oil-fill-tube-relocation-ts-su-757-9472488.jpg?v=1770325029&width=220)
![Perrin [08 - 21 STI] Boost Solenoid Cover Hyper Pink | PSP - ENG - 161HP - JDMuscleBoost Control Solenoid CoversperPSP-ENG-161HP](http://jdmuscleusa.com/cdn/shop/files/perrin-08-21-sti-boost-solenoid-cover-hyper-pink-psp-eng-161hp-9111797.jpg?v=1770327864&width=220)
![Perrin [08 - 21 STI] Boost Solenoid Cover Hyper Pink | PSP - ENG - 161HP - JDMuscleBoost Control Solenoid CoversperPSP-ENG-161HP](http://jdmuscleusa.com/cdn/shop/files/perrin-08-21-sti-boost-solenoid-cover-hyper-pink-psp-eng-161hp-2631792.jpg?v=1770327865&width=220)
![Perrin [15 - 21 WRX/STI] Radiator Shroud | With OEM Intake Scoop - Black - JDMuscleNon - CategorizedperPSP-ENG-512-4BK](http://jdmuscleusa.com/cdn/shop/products/perrin-15-21-wrxsti-radiator-shroud-with-oem-intake-scoop-black-4441694.jpg?v=1770327921&width=220)
![Perrin [15 - 21 WRX/STI] Radiator Shroud | With OEM Intake Scoop - Black - JDMuscleNon - CategorizedperPSP-ENG-512-4BK](http://jdmuscleusa.com/cdn/shop/products/perrin-15-21-wrxsti-radiator-shroud-with-oem-intake-scoop-black-4455470.jpg?v=1770327921&width=220)
![Perrin [15 - 21 WRX/STI] Radiator Shroud with OEM Intake Scoop - Hyper Pink | PSP - ENG - 512 - 4HP - JDMuscleRadiator ShroudsperPSP-ENG-512-4HP](http://jdmuscleusa.com/cdn/shop/products/perrin-15-21-wrxsti-radiator-shroud-with-oem-intake-scoop-hyper-pink-psp-eng-512-4hp-8991737.jpg?v=1770327921&width=220)
![Perrin [15 - 21 WRX/STI] Radiator Shroud with OEM Intake Scoop - Hyper Pink | PSP - ENG - 512 - 4HP - JDMuscleRadiator ShroudsperPSP-ENG-512-4HP](http://jdmuscleusa.com/cdn/shop/products/perrin-15-21-wrxsti-radiator-shroud-with-oem-intake-scoop-hyper-pink-psp-eng-512-4hp-3281667.jpg?v=1770327921&width=220)
![FactionFab [15 - 21 WRX, 15 - 18 STI] Axle Back Exhaust Polished Tip | 1.10204.1 - JDMuscleAxle Back Exhausts1.10204.1](http://jdmuscleusa.com/cdn/shop/files/factionfab-15-21-wrx-15-18-sti-axle-back-exhaust-polished-tip-1102041-5689418.jpg?v=1770327979&width=220)
![FactionFab [15 - 21 WRX, 15 - 18 STI] Axle Back Exhaust Polished Tip | 1.10204.1 - JDMuscleAxle Back Exhausts1.10204.1](http://jdmuscleusa.com/cdn/shop/files/factionfab-15-21-wrx-15-18-sti-axle-back-exhaust-polished-tip-1102041-1324329.jpg?v=1770327979&width=220)
