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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![Cobb [15 - 21 STI] Radiator Shroud + Alternator Cover Package Wrinkle Black - JDMuscleRadiator ShroudscobbSUB00008](//jdmuscleusa.com/cdn/shop/products/cobb-15-21-sti-radiator-shroud-alternator-cover-package-wrinkle-black-7744721.jpg?v=1770336205&width=220)
![Cobb [15 - 21 STI] Radiator Shroud + Alternator Cover Package Wrinkle Black - JDMuscleRadiator ShroudscobbSUB00008](//jdmuscleusa.com/cdn/shop/products/cobb-15-21-sti-radiator-shroud-alternator-cover-package-wrinkle-black-9385586.jpg?v=1770336205&width=220)
In StockCOBB Radiator Shroud + Alternator Cover Package - Wrinkle Black
Fits: 15-21 STI
Only 5 leftRegular price $193.00Sale price $193.00 Regular priceUnit price per$193.00 -
In StockCobb Tuning Delrin Oil Cap
Fits: 02-26 WRX/STI, 13-26 BRZ, 04-18 Forester XT, 05-12 Legacy GT/20-25 Legacy XT, 05-09 & 20-26 Outback XT, 19-26 Ascent, 13-16 FR-S, 17-21 GT86, 22-26 GR86
Only 5 leftRegular price $97.00Sale price $97.00 Regular priceUnit price per$97.00 -
![Cobb [08 - 21 STI/WRX, 09 - 10 Impreza 2.5GT] Coolant Overflow Tank - JDMuscleOverflow / Expansion Tankscobb800650](//jdmuscleusa.com/cdn/shop/products/cobb-08-21-stiwrx-09-10-impreza-25gt-coolant-overflow-tank-5219125.jpg?v=1775590688&width=220)
![Cobb [08 - 21 STI/WRX, 09 - 10 Impreza 2.5GT] Coolant Overflow Tank - JDMuscleOverflow / Expansion Tankscobb800650](//jdmuscleusa.com/cdn/shop/products/cobb-08-21-stiwrx-09-10-impreza-25gt-coolant-overflow-tank-7229131.jpg?v=1775590688&width=220)
Cobb Tuning Coolant Overflow Tank - Wrinkle Black
Fits: 08-21 WRX/STI, 09-10 Impreza 2.5 GT
Regular price $182.00Sale price $182.00 Regular priceUnit price per$182.00 -
In StockCobb Tuning Fuel Rails - Black Anodized
Fits: 08-21 STI
Regular price $300.00Sale price $300.00 Regular priceUnit price per$300.00 -
In StockCobb Tuning Fuel Rail Line Kit
Fits: 08-21 STI
Regular price $595.00Sale price $595.00 Regular priceUnit price per$595.00 -
In StockCobb Tuning Aluminum Alternator Cover - Wrinkle Black
Fits: 08-14 WRX, 08-21 STI
Only 5 leftRegular price $106.00Sale price $106.00 Regular priceUnit price per$106.00 -
In StockCobb Tuning SF Intake System Hardware Kit
Fits: 08-14 WRX, 08-21 STI, 09-13 Forester XT, 09-10 Impreza 2.5 GT
Only 11 leftRegular price $16.00Sale price $16.00 Regular priceUnit price per$16.00 -
Cobb Tuning Battery Tie Down - Black
Fits: 02-26 WRX, 04-21 STI, 13-26 BRZ, 22-26 GR86, 13-16 FR-S, 17-21 GT86, 04-17 Forester XT, 05-12 Legacy GT, 05-09/20-23* Outback XT, 12-26 Impreza, 19-25 Ascent
Regular price $65.00Sale price $65.00 Regular priceUnit price per$65.00 -
![Cobb Tuning [08-14 WRX, 08-21 STI, 09-13 Forester XT] SF Short Ram Intake System - Blue](//jdmuscleusa.com/cdn/shop/files/preview_images/537912932-6ee69593d31119d3cd0638e4ac9bfdc0efe687c7f41b0e800a2afc196788de63-d_295x166_5337a7ec-ef37-47c9-b4c9-2e46f860d47e.jpg?v=1789295987&width=220)
In StockCobb Tuning SF Short Ram Intake System - Blue
Fits: 08-14 WRX, 08-21 STI, 09-13 Forester XT
Only 11 leftRegular price $340.00Sale price $340.00 Regular priceUnit price per$340.00 -
![COBB [19 - 21 STI, 18 STI Type RA] Stage 1+ Power Package w/ SF Intake | SUB0040S1P - BK - JDMuscleEngine Package DealscobbSUB0040S1P-BKBlack](//jdmuscleusa.com/cdn/shop/products/cobb-19-21-sti-18-sti-type-ra-stage-1-power-package-w-sf-intake-sub0040s1p-bk-8665827.jpg?v=1770336433&width=220)
![COBB [19 - 21 STI, 18 STI Type RA] Stage 1+ Power Package w/ SF Intake | SUB0040S1P - BK - JDMuscleEngine Package DealscobbSUB0040S1P-BKBlack](//jdmuscleusa.com/cdn/shop/products/cobb-19-21-sti-18-sti-type-ra-stage-1-power-package-w-sf-intake-sub0040s1p-bk-4613204.jpg?v=1770336434&width=220)
In StockCobb Tuning Stage 1+ Power Package - SF Intake, Airbox & V3 Accessport
Fits: 19-21 STI, 18 STI Type RA
Regular price $1,315.00Sale price $1,315.00 Regular priceUnit price per$1,315.00 -
![COBB [08 - 14 WRX, 08 - 21 STI, 09 - 13 FXT] SF Intake System - Black | 715100 - BK - JDMuscleIntakescobb715100-BK](//jdmuscleusa.com/cdn/shop/products/cobb-08-14-wrx-08-21-sti-09-13-fxt-sf-intake-system-black-715100-bk-6796051.jpg?v=1770336436&width=220)
![COBB [08 - 14 WRX, 08 - 21 STI, 09 - 13 FXT] SF Intake System - Black | 715100 - BK - JDMuscleIntakescobb715100-BK](//jdmuscleusa.com/cdn/shop/products/cobb-08-14-wrx-08-21-sti-09-13-fxt-sf-intake-system-black-715100-bk-3520725.jpg?v=1770336436&width=220)
In StockCobb Tuning SF Intake System - Black
Fits: 08-14 WRX, 08-21 STI, 09-13 Forester XT
Regular price $340.00Sale price $340.00 Regular priceUnit price per$340.00 -
![Torque Solution [02-14 WRX, 07-20 STI, 08-12 LGT, 06-13 FXT] Top Feed Fuel Rails Black - JDMuscleFuel RailstqsTS-SU-400BK.2](//jdmuscleusa.com/cdn/shop/files/torque-solution-02-14-wrx-07-20-sti-08-12-lgt-06-13-fxt-top-feed-fuel-rails-black-8433037.jpg?v=1786511648&width=220)
![Torque Solution [02-14 WRX, 07-20 STI, 08-12 LGT, 06-13 FXT] Top Feed Fuel Rails Black - JDMuscleFuel RailstqsTS-SU-400BK.2](//jdmuscleusa.com/cdn/shop/files/torque-solution-02-14-wrx-07-20-sti-08-12-lgt-06-13-fxt-top-feed-fuel-rails-black-9514976.jpg?v=1786511649&width=220)
Up to $25.21 off
In StockTorque Solution Top Feed Fuel Rails Black
Fits: 02-14 WRX, 07-20 STI, 08-12 LGT, 06-13 FXT
Only 7 leftRegular price $197.00Sale price $197.00 Regular priceUnit price per$222.21 -
GrimmSpeed Front Mount Intercooler Pipe Kit Black Subaru STI 15-21 | GRM090232
Regular price $908.00Sale price $908.00 Regular priceUnit price per$908.00 -
Moroso Coolant Expansion Tank WRX 2008-2020 / STI 2008-2020 | 63871
Regular price $225.99Sale price $225.99 Regular priceUnit price per$225.99 -
![Radium Engineering [15-21 WRX/STI] Fuel Pump Access Cover | 20-0746 - JDMuscleFuel Pumps and Accessoriesrad20-0746](//jdmuscleusa.com/cdn/shop/products/radium-engineering-15-21-wrxsti-fuel-pump-access-cover-20-0746-4071817.jpg?v=1781013553&width=220)
![Radium Engineering [15-21 WRX/STI] Fuel Pump Access Cover | 20-0746 - JDMuscleFuel Pumps and Accessoriesrad20-0746](//jdmuscleusa.com/cdn/shop/products/radium-engineering-15-21-wrxsti-fuel-pump-access-cover-20-0746-4541192.jpg?v=1781013554&width=220)
Up to $4 off
In StockRadium Engineering Fuel Pump Access Cover | 20-0746
Fits: 15-21 WRX/STI
Only 2 leftRegular price $75.95Sale price $75.95 Regular priceUnit price per$79.95 -
![Radium Engineering [08-21 WRX/STI, 05-09 LGT] V2 Fuel Pump Hanger for use w/ DW400 Pumps | 20-0781-00 - JDMuscleFuel Pumps and Accessoriesrad20-0781-00](//jdmuscleusa.com/cdn/shop/products/radium-engineering-08-21-wrxsti-05-09-lgt-v2-fuel-pump-hanger-for-use-w-dw400-pumps-20-0781-00-1683143.jpg?v=1781013620&width=220)
![Radium Engineering [08-21 WRX/STI, 05-09 LGT] V2 Fuel Pump Hanger for use w/ DW400 Pumps | 20-0781-00 - JDMuscleFuel Pumps and Accessoriesrad20-0781-00](//jdmuscleusa.com/cdn/shop/products/radium-engineering-08-21-wrxsti-05-09-lgt-v2-fuel-pump-hanger-for-use-w-dw400-pumps-20-0781-00-4343294.jpg?v=1781013620&width=220)
Up to $27 off
In StockRadium Engineering V2 Fuel Pump Hanger for use w/ DW400 Pumps | 20-0781-00
Fits: 08-21 WRX/STI, 05-09 LGT
Only 4 leftRegular price $512.95Sale price $512.95 Regular priceUnit price per$539.95
![Cobb [15 - 21 STI] Radiator Shroud + Alternator Cover Package Wrinkle Black - JDMuscleRadiator ShroudscobbSUB00008](http://jdmuscleusa.com/cdn/shop/products/cobb-15-21-sti-radiator-shroud-alternator-cover-package-wrinkle-black-7744721.jpg?v=1770336205&width=220)
![Cobb [15 - 21 STI] Radiator Shroud + Alternator Cover Package Wrinkle Black - JDMuscleRadiator ShroudscobbSUB00008](http://jdmuscleusa.com/cdn/shop/products/cobb-15-21-sti-radiator-shroud-alternator-cover-package-wrinkle-black-9385586.jpg?v=1770336205&width=220)
![Cobb [08 - 21 STI/WRX, 09 - 10 Impreza 2.5GT] Coolant Overflow Tank - JDMuscleOverflow / Expansion Tankscobb800650](http://jdmuscleusa.com/cdn/shop/products/cobb-08-21-stiwrx-09-10-impreza-25gt-coolant-overflow-tank-5219125.jpg?v=1775590688&width=220)
![Cobb [08 - 21 STI/WRX, 09 - 10 Impreza 2.5GT] Coolant Overflow Tank - JDMuscleOverflow / Expansion Tankscobb800650](http://jdmuscleusa.com/cdn/shop/products/cobb-08-21-stiwrx-09-10-impreza-25gt-coolant-overflow-tank-7229131.jpg?v=1775590688&width=220)
![Cobb Tuning [08-14 WRX, 08-21 STI, 09-13 Forester XT] SF Short Ram Intake System - Blue](http://jdmuscleusa.com/cdn/shop/files/preview_images/537912932-6ee69593d31119d3cd0638e4ac9bfdc0efe687c7f41b0e800a2afc196788de63-d_295x166_5337a7ec-ef37-47c9-b4c9-2e46f860d47e.jpg?v=1789295987&width=220)
![COBB [19 - 21 STI, 18 STI Type RA] Stage 1+ Power Package w/ SF Intake | SUB0040S1P - BK - JDMuscleEngine Package DealscobbSUB0040S1P-BKBlack](http://jdmuscleusa.com/cdn/shop/products/cobb-19-21-sti-18-sti-type-ra-stage-1-power-package-w-sf-intake-sub0040s1p-bk-8665827.jpg?v=1770336433&width=220)
![COBB [19 - 21 STI, 18 STI Type RA] Stage 1+ Power Package w/ SF Intake | SUB0040S1P - BK - JDMuscleEngine Package DealscobbSUB0040S1P-BKBlack](http://jdmuscleusa.com/cdn/shop/products/cobb-19-21-sti-18-sti-type-ra-stage-1-power-package-w-sf-intake-sub0040s1p-bk-4613204.jpg?v=1770336434&width=220)
![COBB [08 - 14 WRX, 08 - 21 STI, 09 - 13 FXT] SF Intake System - Black | 715100 - BK - JDMuscleIntakescobb715100-BK](http://jdmuscleusa.com/cdn/shop/products/cobb-08-14-wrx-08-21-sti-09-13-fxt-sf-intake-system-black-715100-bk-6796051.jpg?v=1770336436&width=220)
![COBB [08 - 14 WRX, 08 - 21 STI, 09 - 13 FXT] SF Intake System - Black | 715100 - BK - JDMuscleIntakescobb715100-BK](http://jdmuscleusa.com/cdn/shop/products/cobb-08-14-wrx-08-21-sti-09-13-fxt-sf-intake-system-black-715100-bk-3520725.jpg?v=1770336436&width=220)
![Torque Solution [02-14 WRX, 07-20 STI, 08-12 LGT, 06-13 FXT] Top Feed Fuel Rails Black - JDMuscleFuel RailstqsTS-SU-400BK.2](http://jdmuscleusa.com/cdn/shop/files/torque-solution-02-14-wrx-07-20-sti-08-12-lgt-06-13-fxt-top-feed-fuel-rails-black-8433037.jpg?v=1786511648&width=220)
![Torque Solution [02-14 WRX, 07-20 STI, 08-12 LGT, 06-13 FXT] Top Feed Fuel Rails Black - JDMuscleFuel RailstqsTS-SU-400BK.2](http://jdmuscleusa.com/cdn/shop/files/torque-solution-02-14-wrx-07-20-sti-08-12-lgt-06-13-fxt-top-feed-fuel-rails-black-9514976.jpg?v=1786511649&width=220)
![Radium Engineering [15-21 WRX/STI] Fuel Pump Access Cover | 20-0746 - JDMuscleFuel Pumps and Accessoriesrad20-0746](http://jdmuscleusa.com/cdn/shop/products/radium-engineering-15-21-wrxsti-fuel-pump-access-cover-20-0746-4071817.jpg?v=1781013553&width=220)
![Radium Engineering [15-21 WRX/STI] Fuel Pump Access Cover | 20-0746 - JDMuscleFuel Pumps and Accessoriesrad20-0746](http://jdmuscleusa.com/cdn/shop/products/radium-engineering-15-21-wrxsti-fuel-pump-access-cover-20-0746-4541192.jpg?v=1781013554&width=220)
![Radium Engineering [08-21 WRX/STI, 05-09 LGT] V2 Fuel Pump Hanger for use w/ DW400 Pumps | 20-0781-00 - JDMuscleFuel Pumps and Accessoriesrad20-0781-00](http://jdmuscleusa.com/cdn/shop/products/radium-engineering-08-21-wrxsti-05-09-lgt-v2-fuel-pump-hanger-for-use-w-dw400-pumps-20-0781-00-1683143.jpg?v=1781013620&width=220)
![Radium Engineering [08-21 WRX/STI, 05-09 LGT] V2 Fuel Pump Hanger for use w/ DW400 Pumps | 20-0781-00 - JDMuscleFuel Pumps and Accessoriesrad20-0781-00](http://jdmuscleusa.com/cdn/shop/products/radium-engineering-08-21-wrxsti-05-09-lgt-v2-fuel-pump-hanger-for-use-w-dw400-pumps-20-0781-00-4343294.jpg?v=1781013620&width=220)