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 [08-15 WRX/STI] Plug-N-Play Aluminum Fan Shroud Kit | MMFS-STI-08P](//jdmuscleusa.com/cdn/shop/products/mishimoto-plug-n-play-aluminum-fan-shroud-kit-subaru-impreza-wrx-sti-2008-2019-radiator-fans-mishimoto-mmfs-sti-08p.jpg?v=1614515244&width=220)
![Mishimoto [08-15 WRX/STI] Plug-N-Play Aluminum Fan Shroud Kit | MMFS-STI-08P](//jdmuscleusa.com/cdn/shop/products/mishimoto-plug-n-play-aluminum-fan-shroud-kit-subaru-impreza-wrx-sti-2008-2019-radiator-fans-mishimoto-mmfs-sti-08p-2.jpg?v=1614515245&width=220)
Up to $33.05 off
In StockMishimoto Plug-N-Play Aluminum Fan Shroud Kit | MMFS-STI-08P
Fits: 08-15 WRX/STI
Only 7 leftRegular price $334.95Sale price $334.95 Regular priceUnit price per$368.00 -
![Extreme Online Store [08 - 21 STI / 08 - 14 WRX] Performance Catted Downpipe - JDMuscleFront Pipes and Downpipes / J - Pipes](//jdmuscleusa.com/cdn/shop/files/extreme-online-store-08-21-sti-08-14-wrx-performance-catted-downpipe-8738233.jpg?v=1770326780&width=220)
![Extreme Online Store [08 - 21 STI / 08 - 14 WRX] Performance Catted Downpipe - JDMuscleFront Pipes and Downpipes / J - Pipes](//jdmuscleusa.com/cdn/shop/files/extreme-online-store-08-21-sti-08-14-wrx-performance-catted-downpipe-2866454.jpg?v=1770326780&width=220)
In StockEOS Performance Catted Downpipe
Fits: 08-21 STI / 08-14 WRX
Only 1 leftRegular price $380.00Sale price $380.00 Regular priceUnit price per$329.98 -
![Extreme Online Store [15 - 21 WRX / STi] Axle Back Quad Burnt Tips Exhaust - JDMuscleAxle Back ExhaustsEXT-MD002-BTQuad Burnt Tips](//jdmuscleusa.com/cdn/shop/files/extreme-online-store-15-21-wrx-sti-axle-back-quad-burnt-tips-exhaust-7063058.jpg?v=1770326790&width=220)
![Extreme Online Store [15 - 21 WRX / STi] Axle Back Quad Burnt Tips Exhaust - JDMuscleAxle Back ExhaustsEXT-MD002-BTQuad Burnt Tips](//jdmuscleusa.com/cdn/shop/files/extreme-online-store-15-21-wrx-sti-axle-back-quad-burnt-tips-exhaust-5366294.jpg?v=1770326791&width=220)
In StockEOS Axle Back Quad Burnt Tips Exhaust
Fits: 15-21 WRX / STI
Only 1 leftRegular price $330.00Sale price $330.00 Regular priceUnit price per$289.98 -
![COBB [08 - 21 WRX/STI] Redline Fuse Cover - Gloss Finish - JDMuscleFuse Box Coverscobb844660](//jdmuscleusa.com/cdn/shop/products/cobb-08-21-wrxsti-redline-fuse-cover-gloss-finish-7155898.jpg?v=1770330626&width=220)
![COBB [08 - 21 WRX/STI] Redline Fuse Cover - Gloss Finish - JDMuscleFuse Box Coverscobb844660](//jdmuscleusa.com/cdn/shop/products/cobb-08-21-wrxsti-redline-fuse-cover-gloss-finish-7089390.jpg?v=1770330626&width=220)
In StockCOBB Redline Fuse Cover - Gloss Finish
Fits: 08-21 WRX/STI, 18 Type RA, 19 S209
Only 15 leftRegular price $207.00Sale price $207.00 Regular priceUnit price per$207.00 -
![PLM [15-21 WRX/STI] Axle-Back Exhaust Muffler Deletes V2 - JDMuscleAxle Back ExhaustsPLM-SUB-TKP-DUAL-2015-2-BLUETITANIUM BLUE TIP](//jdmuscleusa.com/cdn/shop/products/plm-15-21-wrxsti-axle-back-exhaust-muffler-deletes-v2-9362250.jpg?v=1789267818&width=220)
![PLM [15-21 WRX/STI] Axle-Back Exhaust Muffler Deletes V2 - JDMuscleAxle Back ExhaustsPLM-SUB-TKP-DUAL-2015-2-POLISHPOLISHED TIP](//jdmuscleusa.com/cdn/shop/products/plm-15-21-wrxsti-axle-back-exhaust-muffler-deletes-v2-1146440.jpg?v=1789267818&width=220)
Up to $51 off
In StockPLM Axle-Back Exhaust Muffler Deletes V2
Fits: 15-21 WRX/STI
Only 7 leftRegular price From $299.00Sale price From $299.00 Regular priceUnit price per$350.00 -
![Revel [15-21 WRX / STI] GT Dry Carbon Air Intake Cover - 1 Piece | 1TR4GT0AS08](//jdmuscleusa.com/cdn/shop/products/1TR4GT0AS08.jpg?v=1669934847&width=220)
Up to $12.75 off
In StockRevel GT Dry Carbon Air Intake Cover - 1 Piece
Fits: 15-21 WRX/STI
Only 1 leftRegular price $242.25Sale price $242.25 Regular priceUnit price per$255.00 -
![Tomei [02-07 WRX, 04-21 STI, 04-08 FXT] Silicone Turbo Inlet Hose - Black | TB301A-SB01B](//jdmuscleusa.com/cdn/shop/products/TB301A-SB01B.jpg?v=1669932204&width=220)
![Tomei [02-07 WRX, 04-21 STI, 04-08 FXT] Silicone Turbo Inlet Hose - Black | TB301A-SB01B](//jdmuscleusa.com/cdn/shop/products/TB301A-SB01B_1.jpg?v=1667810532&width=220)
Up to $19 off
In StockTomei Silicone Turbo Inlet Hose - Black | TB301A-SB01B
Fits: 02-07 WRX, 04-21 STI, 04-08 FXT
Only 5 leftRegular price $171.00Sale price $171.00 Regular priceUnit price per$190.00 -
![COBB [08 - 14 WRX, 08 - 21 STI, 05 - 09 LGT, 05 - 09 OBXT, 09 - 13 FXT] V3 Air / Oil Separator - AOS - JDMuscleAir Oil Separatorscobb822615](//jdmuscleusa.com/cdn/shop/products/cobb-08-14-wrx-08-21-sti-05-09-lgt-05-09-obxt-09-13-fxt-v3-air-oil-separator-aos-1666996.jpg?v=1770336429&width=220)
![COBB [08 - 14 WRX, 08 - 21 STI, 05 - 09 LGT, 05 - 09 OBXT, 09 - 13 FXT] V3 Air / Oil Separator - AOS - JDMuscleAir Oil Separatorscobb822615](//jdmuscleusa.com/cdn/shop/products/cobb-08-14-wrx-08-21-sti-05-09-lgt-05-09-obxt-09-13-fxt-v3-air-oil-separator-aos-3273984.jpg?v=1770336430&width=220)
In StockCobb Tuning V3 Air/Oil Separator - AOS
Fits: 08-14 WRX, 08-21 STI, 05-09 Legacy GT/Outback XT, 09-13 Forester XT
Regular price $595.00Sale price $595.00 Regular priceUnit price per$595.00 -
![COBB [08 - 21 STI] Silicone Turbo Inlet V2 - Black - JDMuscleTurbo Inlet Hoses and Pipescobb712450](//jdmuscleusa.com/cdn/shop/products/cobb-08-21-sti-silicone-turbo-inlet-v2-black-5349387.jpg?v=1770336440&width=220)
![COBB [08 - 21 STI] Silicone Turbo Inlet V2 - Black - JDMuscleTurbo Inlet Hoses and Pipescobb712450](//jdmuscleusa.com/cdn/shop/products/cobb-08-21-sti-silicone-turbo-inlet-v2-black-7767070.jpg?v=1770336440&width=220)
In StockCobb Tuning Silicone Turbo Inlet V2 - Black
Fits: 08-21 STI
Regular price $290.00Sale price $290.00 Regular priceUnit price per$290.00 -
![COBB [08 - 14 WRX, 08 - 21 STI, 05 - 09 Legacy GT, 09 - 13 Forester XT, 05 - 09 Outback XT] 3 - Port Boost Control Solenoid (BCS)| 715750 - JDMuscleBoost Control Solenoidscobb715750](//jdmuscleusa.com/cdn/shop/products/cobb-08-14-wrx-08-21-sti-05-09-legacy-gt-09-13-forester-xt-05-09-outback-xt-3-port-boost-control-solenoid-bcs-715750-7295743.jpg?v=1770336560&width=220)
![COBB [08 - 14 WRX, 08 - 21 STI, 05 - 09 Legacy GT, 09 - 13 Forester XT, 05 - 09 Outback XT] 3 - Port Boost Control Solenoid (BCS)| 715750 - JDMuscleBoost Control Solenoidscobb715750](//jdmuscleusa.com/cdn/shop/products/cobb-08-14-wrx-08-21-sti-05-09-legacy-gt-09-13-forester-xt-05-09-outback-xt-3-port-boost-control-solenoid-bcs-715750-4255865.jpg?v=1770336560&width=220)
In StockCobb Tuning 3-Port Boost Control Solenoid (BCS)
Fits: 08-14 WRX, 08-21 STI, 05-09 Legacy GT, 05-09 Outback XT, 09-13 Forester XT
Regular price $188.00Sale price $188.00 Regular priceUnit price per$188.00 -
![Grimmspeed [08-21 WRX / 08-18 STI / 09-18 Forester / 13-17 Crosstrek / 05-17 Legacy] DRY-CON Panel Filter | 060091 - JDMuscleHigh Flow Replacement Panel Filtersgrm060091](//jdmuscleusa.com/cdn/shop/products/grimmspeed-08-21-wrx-08-18-sti-09-18-forester-13-17-crosstrek-05-17-legacy-dry-con-panel-filter-060091-5367637.jpg?v=1781013196&width=220)
![Grimmspeed [08-21 WRX / 08-18 STI / 09-18 Forester / 13-17 Crosstrek / 05-17 Legacy] DRY-CON Panel Filter | 060091 - JDMuscleHigh Flow Replacement Panel Filtersgrm060091](//jdmuscleusa.com/cdn/shop/products/grimmspeed-08-21-wrx-08-18-sti-09-18-forester-13-17-crosstrek-05-17-legacy-dry-con-panel-filter-060091-3575296.jpg?v=1781013196&width=220)
In StockGrimmspeed DRY-CON Panel Filter | 060091
Fits: 08-21 WRX / 08-18 STI / 09-18 Forester / 13-17 Crosstrek / 05-17 Legacy
Regular price $82.00Sale price $82.00 Regular priceUnit price per$82.00 -
Up to $6.21 off
In StockTorque Solution Thermal Oil Filter Blanket Short WRX/STI EJ Engine
Only 6 leftRegular price $66.00Sale price $66.00 Regular priceUnit price per$72.21 -
In StockGrimmSpeed Downpipe to Catback 3in Gasket - Universal | 022001
Only 1 leftRegular price $42.00Sale price $42.00 Regular priceUnit price per$42.00 -
Up to $20.53 offARP Head Studs 11mm Subaru Turbo Models
Fits: 02-14 WRX, 04-21 STI, 05-12 LGT, 04-13 FXT
Regular price $283.00Sale price $283.00 Regular priceUnit price per$303.53 -
![Grimmspeed [08 - 21 WRX/STI, 05 - 09 LGT, 13 - 21 BRZ] 12MM Two Position Exhaust Hanger (Set of 4) | 070047 - JDMuscleExhaust Hangersgrm070047](//jdmuscleusa.com/cdn/shop/files/grimmspeed-08-21-wrxsti-05-09-lgt-13-21-brz-12mm-two-position-exhaust-hanger-set-of-4-070047-5797139.jpg?v=1770328223&width=220)
![Grimmspeed [08 - 21 WRX/STI, 05 - 09 LGT, 13 - 21 BRZ] 12MM Two Position Exhaust Hanger (Set of 4) | 070047 - JDMuscleExhaust Hangersgrm070047](//jdmuscleusa.com/cdn/shop/files/grimmspeed-08-21-wrxsti-05-09-lgt-13-21-brz-12mm-two-position-exhaust-hanger-set-of-4-070047-5761858.jpg?v=1770328224&width=220)
In StockGrimmspeed 12MM Two Position Exhaust Hanger (Set of 4) | 070047
Fits: 08-21 WRX/STI, 05-09 LGT, 13-21 BRZ
Only 1 leftRegular price $66.00Sale price $66.00 Regular priceUnit price per$66.00 -
![COBB Subaru Redline Fuse Cover [08 - 21 WRX/STI, 2019 S209, 2018 Type RA] - JDMuscleFuse Box CoversCOB844660](//jdmuscleusa.com/cdn/shop/products/cobb-subaru-redline-fuse-cover-08-21-wrxsti-2019-s209-2018-type-ra-2604858.jpg?v=1770330019&width=220)
![COBB Subaru Redline Fuse Cover [08 - 21 WRX/STI, 2019 S209, 2018 Type RA] - JDMuscleFuse Box CoversCOB844660](//jdmuscleusa.com/cdn/shop/products/cobb-subaru-redline-fuse-cover-08-21-wrxsti-2019-s209-2018-type-ra-6909168.jpg?v=1770330019&width=220)
In StockCOBB Redline Fuse Cover - Carbon Fiber/Gloss Black
Fits: 08-21 WRX/STI, 18 Type RA, 19 S209
Only 14 leftRegular price $207.00Sale price $207.00 Regular priceUnit price per$207.00
![Mishimoto [08-15 WRX/STI] Plug-N-Play Aluminum Fan Shroud Kit | MMFS-STI-08P](http://jdmuscleusa.com/cdn/shop/products/mishimoto-plug-n-play-aluminum-fan-shroud-kit-subaru-impreza-wrx-sti-2008-2019-radiator-fans-mishimoto-mmfs-sti-08p.jpg?v=1614515244&width=220)
![Mishimoto [08-15 WRX/STI] Plug-N-Play Aluminum Fan Shroud Kit | MMFS-STI-08P](http://jdmuscleusa.com/cdn/shop/products/mishimoto-plug-n-play-aluminum-fan-shroud-kit-subaru-impreza-wrx-sti-2008-2019-radiator-fans-mishimoto-mmfs-sti-08p-2.jpg?v=1614515245&width=220)
![Extreme Online Store [08 - 21 STI / 08 - 14 WRX] Performance Catted Downpipe - JDMuscleFront Pipes and Downpipes / J - Pipes](http://jdmuscleusa.com/cdn/shop/files/extreme-online-store-08-21-sti-08-14-wrx-performance-catted-downpipe-8738233.jpg?v=1770326780&width=220)
![Extreme Online Store [08 - 21 STI / 08 - 14 WRX] Performance Catted Downpipe - JDMuscleFront Pipes and Downpipes / J - Pipes](http://jdmuscleusa.com/cdn/shop/files/extreme-online-store-08-21-sti-08-14-wrx-performance-catted-downpipe-2866454.jpg?v=1770326780&width=220)
![Extreme Online Store [15 - 21 WRX / STi] Axle Back Quad Burnt Tips Exhaust - JDMuscleAxle Back ExhaustsEXT-MD002-BTQuad Burnt Tips](http://jdmuscleusa.com/cdn/shop/files/extreme-online-store-15-21-wrx-sti-axle-back-quad-burnt-tips-exhaust-7063058.jpg?v=1770326790&width=220)
![Extreme Online Store [15 - 21 WRX / STi] Axle Back Quad Burnt Tips Exhaust - JDMuscleAxle Back ExhaustsEXT-MD002-BTQuad Burnt Tips](http://jdmuscleusa.com/cdn/shop/files/extreme-online-store-15-21-wrx-sti-axle-back-quad-burnt-tips-exhaust-5366294.jpg?v=1770326791&width=220)
![COBB [08 - 21 WRX/STI] Redline Fuse Cover - Gloss Finish - JDMuscleFuse Box Coverscobb844660](http://jdmuscleusa.com/cdn/shop/products/cobb-08-21-wrxsti-redline-fuse-cover-gloss-finish-7155898.jpg?v=1770330626&width=220)
![COBB [08 - 21 WRX/STI] Redline Fuse Cover - Gloss Finish - JDMuscleFuse Box Coverscobb844660](http://jdmuscleusa.com/cdn/shop/products/cobb-08-21-wrxsti-redline-fuse-cover-gloss-finish-7089390.jpg?v=1770330626&width=220)
![PLM [15-21 WRX/STI] Axle-Back Exhaust Muffler Deletes V2 - JDMuscleAxle Back ExhaustsPLM-SUB-TKP-DUAL-2015-2-BLUETITANIUM BLUE TIP](http://jdmuscleusa.com/cdn/shop/products/plm-15-21-wrxsti-axle-back-exhaust-muffler-deletes-v2-9362250.jpg?v=1789267818&width=220)
![PLM [15-21 WRX/STI] Axle-Back Exhaust Muffler Deletes V2 - JDMuscleAxle Back ExhaustsPLM-SUB-TKP-DUAL-2015-2-POLISHPOLISHED TIP](http://jdmuscleusa.com/cdn/shop/products/plm-15-21-wrxsti-axle-back-exhaust-muffler-deletes-v2-1146440.jpg?v=1789267818&width=220)
![Revel [15-21 WRX / STI] GT Dry Carbon Air Intake Cover - 1 Piece | 1TR4GT0AS08](http://jdmuscleusa.com/cdn/shop/products/1TR4GT0AS08.jpg?v=1669934847&width=220)
![Tomei [02-07 WRX, 04-21 STI, 04-08 FXT] Silicone Turbo Inlet Hose - Black | TB301A-SB01B](http://jdmuscleusa.com/cdn/shop/products/TB301A-SB01B.jpg?v=1669932204&width=220)
![Tomei [02-07 WRX, 04-21 STI, 04-08 FXT] Silicone Turbo Inlet Hose - Black | TB301A-SB01B](http://jdmuscleusa.com/cdn/shop/products/TB301A-SB01B_1.jpg?v=1667810532&width=220)
![COBB [08 - 14 WRX, 08 - 21 STI, 05 - 09 LGT, 05 - 09 OBXT, 09 - 13 FXT] V3 Air / Oil Separator - AOS - JDMuscleAir Oil Separatorscobb822615](http://jdmuscleusa.com/cdn/shop/products/cobb-08-14-wrx-08-21-sti-05-09-lgt-05-09-obxt-09-13-fxt-v3-air-oil-separator-aos-1666996.jpg?v=1770336429&width=220)
![COBB [08 - 14 WRX, 08 - 21 STI, 05 - 09 LGT, 05 - 09 OBXT, 09 - 13 FXT] V3 Air / Oil Separator - AOS - JDMuscleAir Oil Separatorscobb822615](http://jdmuscleusa.com/cdn/shop/products/cobb-08-14-wrx-08-21-sti-05-09-lgt-05-09-obxt-09-13-fxt-v3-air-oil-separator-aos-3273984.jpg?v=1770336430&width=220)
![COBB [08 - 21 STI] Silicone Turbo Inlet V2 - Black - JDMuscleTurbo Inlet Hoses and Pipescobb712450](http://jdmuscleusa.com/cdn/shop/products/cobb-08-21-sti-silicone-turbo-inlet-v2-black-5349387.jpg?v=1770336440&width=220)
![COBB [08 - 21 STI] Silicone Turbo Inlet V2 - Black - JDMuscleTurbo Inlet Hoses and Pipescobb712450](http://jdmuscleusa.com/cdn/shop/products/cobb-08-21-sti-silicone-turbo-inlet-v2-black-7767070.jpg?v=1770336440&width=220)
![COBB [08 - 14 WRX, 08 - 21 STI, 05 - 09 Legacy GT, 09 - 13 Forester XT, 05 - 09 Outback XT] 3 - Port Boost Control Solenoid (BCS)| 715750 - JDMuscleBoost Control Solenoidscobb715750](http://jdmuscleusa.com/cdn/shop/products/cobb-08-14-wrx-08-21-sti-05-09-legacy-gt-09-13-forester-xt-05-09-outback-xt-3-port-boost-control-solenoid-bcs-715750-7295743.jpg?v=1770336560&width=220)
![COBB [08 - 14 WRX, 08 - 21 STI, 05 - 09 Legacy GT, 09 - 13 Forester XT, 05 - 09 Outback XT] 3 - Port Boost Control Solenoid (BCS)| 715750 - JDMuscleBoost Control Solenoidscobb715750](http://jdmuscleusa.com/cdn/shop/products/cobb-08-14-wrx-08-21-sti-05-09-legacy-gt-09-13-forester-xt-05-09-outback-xt-3-port-boost-control-solenoid-bcs-715750-4255865.jpg?v=1770336560&width=220)
![Grimmspeed [08-21 WRX / 08-18 STI / 09-18 Forester / 13-17 Crosstrek / 05-17 Legacy] DRY-CON Panel Filter | 060091 - JDMuscleHigh Flow Replacement Panel Filtersgrm060091](http://jdmuscleusa.com/cdn/shop/products/grimmspeed-08-21-wrx-08-18-sti-09-18-forester-13-17-crosstrek-05-17-legacy-dry-con-panel-filter-060091-5367637.jpg?v=1781013196&width=220)
![Grimmspeed [08-21 WRX / 08-18 STI / 09-18 Forester / 13-17 Crosstrek / 05-17 Legacy] DRY-CON Panel Filter | 060091 - JDMuscleHigh Flow Replacement Panel Filtersgrm060091](http://jdmuscleusa.com/cdn/shop/products/grimmspeed-08-21-wrx-08-18-sti-09-18-forester-13-17-crosstrek-05-17-legacy-dry-con-panel-filter-060091-3575296.jpg?v=1781013196&width=220)
![Grimmspeed [08 - 21 WRX/STI, 05 - 09 LGT, 13 - 21 BRZ] 12MM Two Position Exhaust Hanger (Set of 4) | 070047 - JDMuscleExhaust Hangersgrm070047](http://jdmuscleusa.com/cdn/shop/files/grimmspeed-08-21-wrxsti-05-09-lgt-13-21-brz-12mm-two-position-exhaust-hanger-set-of-4-070047-5797139.jpg?v=1770328223&width=220)
![Grimmspeed [08 - 21 WRX/STI, 05 - 09 LGT, 13 - 21 BRZ] 12MM Two Position Exhaust Hanger (Set of 4) | 070047 - JDMuscleExhaust Hangersgrm070047](http://jdmuscleusa.com/cdn/shop/files/grimmspeed-08-21-wrxsti-05-09-lgt-13-21-brz-12mm-two-position-exhaust-hanger-set-of-4-070047-5761858.jpg?v=1770328224&width=220)
![COBB Subaru Redline Fuse Cover [08 - 21 WRX/STI, 2019 S209, 2018 Type RA] - JDMuscleFuse Box CoversCOB844660](http://jdmuscleusa.com/cdn/shop/products/cobb-subaru-redline-fuse-cover-08-21-wrxsti-2019-s209-2018-type-ra-2604858.jpg?v=1770330019&width=220)
![COBB Subaru Redline Fuse Cover [08 - 21 WRX/STI, 2019 S209, 2018 Type RA] - JDMuscleFuse Box CoversCOB844660](http://jdmuscleusa.com/cdn/shop/products/cobb-subaru-redline-fuse-cover-08-21-wrxsti-2019-s209-2018-type-ra-6909168.jpg?v=1770330019&width=220)