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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![IAG Performance [02 - 14 WRX / 04 - 21 STI / 05 - 09 LGT / 04 - 13 FXT] Street Series Oil Pan Silver | IAG - ENG - 2200SL - JDMuscleOil PansIAG-ENG-2200SL](//jdmuscleusa.com/cdn/shop/files/iag-performance-02-14-wrx-04-21-sti-05-09-lgt-04-13-fxt-street-series-oil-pan-silver-iag-eng-2200sl-7871498.jpg?v=1770327974&width=220)
![IAG Performance [02 - 14 WRX / 04 - 21 STI / 05 - 09 LGT / 04 - 13 FXT] Street Series Oil Pan Silver | IAG - ENG - 2200SL - JDMuscleOil PansIAG-ENG-2200SL](//jdmuscleusa.com/cdn/shop/files/iag-performance-02-14-wrx-04-21-sti-05-09-lgt-04-13-fxt-street-series-oil-pan-silver-iag-eng-2200sl-8214944.jpg?v=1770327974&width=220)
In StockIAG Performance Street Series Oil Pan Silver
Fits: 02-14 WRX, 04-21 STI, 05-09 LGT, 04-13 FXT
Only 1 leftRegular price $529.99Sale price $529.99 Regular priceUnit price per$529.99 -
IAG Performance Blow Off Valve Adapter
Fits: 02-07 WRX, 04-21 STI
Regular price $49.99Sale price $49.99 Regular priceUnit price per$49.99 -
![COBB [15 - 21 STI] NexGen Stage 1+ to Stage 2 + Flex Fuel Power Package Upgrade - JDMuscleEngine Package DealscobbSUB004NG2FF-S1P-UP](//jdmuscleusa.com/cdn/shop/files/cobb-15-21-sti-nexgen-stage-1-to-stage-2-flex-fuel-power-package-upgrade-2682088.jpg?v=1770328224&width=220)
![COBB [15 - 21 STI] NexGen Stage 1+ to Stage 2 + Flex Fuel Power Package Upgrade - JDMuscleEngine Package DealscobbSUB004NG2FF-S1P-UP](//jdmuscleusa.com/cdn/shop/files/cobb-15-21-sti-nexgen-stage-1-to-stage-2-flex-fuel-power-package-upgrade-3854326.jpg?v=1770328224&width=220)
In StockCobb Tuning NexGen Stage 1+ to Stage 2+ Flex Fuel Power Package Upgrade
Fits: 08-21 STI, 18 Type RA
Only 16 leftRegular price $3,230.00Sale price $3,230.00 Regular priceUnit price per$3,230.00 -
In StockGrimmSpeed Front Mount Intercooler Kit - Silver Core with Red Piping
Fits: 15-21 STI
Only 1 leftRegular price $2,174.00Sale price $2,174.00 Regular priceUnit price per$2,174.00 -
Cobb Tuning 4 Bar MAP Sensor - Sensor Only
Fits: 02-14 WRX, 04-21 STI, 05-08 Forester XT
Regular price $197.00Sale price $197.00 Regular priceUnit price per$197.00 -
In StockIAG Timing Belt Kit with IAG Red Racing Belt, Timing Guide, Adjustable Idlers & Tensioner
Fits: 02-14 WRX, 04-21 STI, 05-12 LGT, 04-13 FXT
Only 1 leftRegular price $699.99Sale price $699.99 Regular priceUnit price per$699.99 -
In StockIAG STI Big Bore 76mm Throttle Body w/ Electronics & Adapter Intake Manifolds | IAG-AFD-2027BK
Only 1 leftRegular price $414.99Sale price $414.99 Regular priceUnit price per$414.99 -
In StockIAG STI Big Bore 76mm Throttle Body w/ Electronics & Adapter Package Process West Intake Manifolds | IAG-AFD-2028BK
Only 1 leftRegular price $414.99Sale price $414.99 Regular priceUnit price per$414.99 -
![Mishimoto [08 - 15 WRX/STI] PNP Aluminum Fan Shroud Black | MMFS - STI - 08PBK - JDMuscleElectric FansmisMMFS-STI-08PBK](//jdmuscleusa.com/cdn/shop/products/mishimoto-08-15-wrxsti-pnp-aluminum-fan-shroud-black-mmfs-sti-08pbk-9276511.png?v=1770329012&width=220)
![Mishimoto [08 - 15 WRX/STI] PNP Aluminum Fan Shroud Black | MMFS - STI - 08PBK - JDMuscleElectric FansmisMMFS-STI-08PBK](//jdmuscleusa.com/cdn/shop/products/mishimoto-08-15-wrxsti-pnp-aluminum-fan-shroud-black-mmfs-sti-08pbk-7065278.png?v=1770329012&width=220)
Up to $36.05 off
In StockMishimoto PNP Aluminum Fan Shroud Black | MMFS-STI-08PBK
Fits: 08-15 WRX/STI
Only 3 leftRegular price $359.95Sale price $359.95 Regular priceUnit price per$396.00 -
![HPS Performance [15 - 21 STI] Black Cold Air Intake w/ Heatshield | 837 - 573WB - JDMuscleIntakesHPS837-573WB](//jdmuscleusa.com/cdn/shop/files/hps-performance-15-21-sti-black-cold-air-intake-w-heatshield-837-573wb-6543550.jpg?v=1770329175&width=220)
![HPS Performance [15 - 21 STI] Black Cold Air Intake w/ Heatshield | 837 - 573WB - JDMuscleIntakesHPS837-573WB](//jdmuscleusa.com/cdn/shop/files/hps-performance-15-21-sti-black-cold-air-intake-w-heatshield-837-573wb-2455727.jpg?v=1770329175&width=220)
Up to $10 offHPS Performance Black Cold Air Intake w/ Heatshield | 837-573WB
Fits: 15-21 STI
Regular price $271.00Sale price $271.00 Regular priceUnit price per$281.00 -
![GrimmSpeed [Subaru Models inc. 02 - 14 WRX / 04 - 21 STI] Lightweight Crank Pulley Red | GRM095015R - JDMusclePulleysgrm095015R](//jdmuscleusa.com/cdn/shop/products/grimmspeed-subaru-models-inc-02-14-wrx-04-21-sti-lightweight-crank-pulley-red-grm095015r-6951138.jpg?v=1770329532&width=220)
![GrimmSpeed [Subaru Models inc. 02 - 14 WRX / 04 - 21 STI] Lightweight Crank Pulley Red | GRM095015R - JDMusclePulleysgrm095015R](//jdmuscleusa.com/cdn/shop/products/grimmspeed-subaru-models-inc-02-14-wrx-04-21-sti-lightweight-crank-pulley-red-grm095015r-2827011.jpg?v=1770329532&width=220)
In StockGrimmSpeed Lightweight Crank Pulley Red | GRM095015R
Fits: Subaru Models inc. 02-14 WRX / 04-21 STI
Only 1 leftRegular price $189.00Sale price $189.00 Regular priceUnit price per$189.00 -
In StockETS Front Mount Intercooler Piping Kit Wrinkle Black Subaru STI 15-2020 | 200-30-ICP-001
Only 1 leftRegular price $795.00Sale price $795.00 Regular priceUnit price per$795.00 -
Up to $14 offHPS Performance 15-21 STI Full Cooling System Hose Kit Blue | 57-1516-BLUE
Regular price $318.00Sale price $318.00 Regular priceUnit price per$332.00 -
Up to $7.50 offBLOX Racing Air Box Intake Hose - Black
Fits: 08-14 WRX, 08-20 STI
Regular price $67.50Sale price $67.50 Regular priceUnit price per$75.00 -
![Cobb [18 STI Type RA, 19 STI] Stage 3+ Flex Fuel Power Package | Titanium - Black - JDMuscleFlex FuelcobbSUB0041130FTI-BK](//jdmuscleusa.com/cdn/shop/files/cobb-18-sti-type-ra-19-sti-stage-3-flex-fuel-power-package-titanium-black-5770544.jpg?v=1772959631&width=220)
![Cobb [18 STI Type RA, 19 STI] Stage 3+ Flex Fuel Power Package | Titanium - Black - JDMuscleFlex FuelcobbSUB0041130FTI-BK](//jdmuscleusa.com/cdn/shop/files/cobb-18-sti-type-ra-19-sti-stage-3-flex-fuel-power-package-titanium-black-6802810.jpg?v=1772959631&width=220)
COBB Stage 3+ Flex Fuel Power Package - Titanium/Black *Discontinued*
Fits: 18 STI Type RA
Regular price $0.00Sale price $0.00 Regular priceUnit price per$0.00 -
![Cobb [15 - 19 WRX/STi] Titanium 3in Catback Exhaust Replacement Hardware Kit - JDMuscleExhaust Gaskets and Hardwarecobb515140-HW](//jdmuscleusa.com/cdn/shop/products/cobb-15-19-wrxsti-titanium-3in-catback-exhaust-replacement-hardware-kit-4382989.jpg?v=1770330433&width=220)
![Cobb [15 - 19 WRX/STi] Titanium 3in Catback Exhaust Replacement Hardware Kit - JDMuscleExhaust Gaskets and Hardwarecobb515140-HW](//jdmuscleusa.com/cdn/shop/products/cobb-15-19-wrxsti-titanium-3in-catback-exhaust-replacement-hardware-kit-3528128.jpg?v=1770330433&width=220)
COBB Titanium 3in Catback Exhaust Replacement Hardware Kit
Fits: 11-21 WRX/STI Sedan, 22+ WRX
Regular price $53.00Sale price $53.00 Regular priceUnit price per$53.00
![IAG Performance [02 - 14 WRX / 04 - 21 STI / 05 - 09 LGT / 04 - 13 FXT] Street Series Oil Pan Silver | IAG - ENG - 2200SL - JDMuscleOil PansIAG-ENG-2200SL](http://jdmuscleusa.com/cdn/shop/files/iag-performance-02-14-wrx-04-21-sti-05-09-lgt-04-13-fxt-street-series-oil-pan-silver-iag-eng-2200sl-7871498.jpg?v=1770327974&width=220)
![IAG Performance [02 - 14 WRX / 04 - 21 STI / 05 - 09 LGT / 04 - 13 FXT] Street Series Oil Pan Silver | IAG - ENG - 2200SL - JDMuscleOil PansIAG-ENG-2200SL](http://jdmuscleusa.com/cdn/shop/files/iag-performance-02-14-wrx-04-21-sti-05-09-lgt-04-13-fxt-street-series-oil-pan-silver-iag-eng-2200sl-8214944.jpg?v=1770327974&width=220)
![COBB [15 - 21 STI] NexGen Stage 1+ to Stage 2 + Flex Fuel Power Package Upgrade - JDMuscleEngine Package DealscobbSUB004NG2FF-S1P-UP](http://jdmuscleusa.com/cdn/shop/files/cobb-15-21-sti-nexgen-stage-1-to-stage-2-flex-fuel-power-package-upgrade-2682088.jpg?v=1770328224&width=220)
![COBB [15 - 21 STI] NexGen Stage 1+ to Stage 2 + Flex Fuel Power Package Upgrade - JDMuscleEngine Package DealscobbSUB004NG2FF-S1P-UP](http://jdmuscleusa.com/cdn/shop/files/cobb-15-21-sti-nexgen-stage-1-to-stage-2-flex-fuel-power-package-upgrade-3854326.jpg?v=1770328224&width=220)
![Mishimoto [08 - 15 WRX/STI] PNP Aluminum Fan Shroud Black | MMFS - STI - 08PBK - JDMuscleElectric FansmisMMFS-STI-08PBK](http://jdmuscleusa.com/cdn/shop/products/mishimoto-08-15-wrxsti-pnp-aluminum-fan-shroud-black-mmfs-sti-08pbk-9276511.png?v=1770329012&width=220)
![Mishimoto [08 - 15 WRX/STI] PNP Aluminum Fan Shroud Black | MMFS - STI - 08PBK - JDMuscleElectric FansmisMMFS-STI-08PBK](http://jdmuscleusa.com/cdn/shop/products/mishimoto-08-15-wrxsti-pnp-aluminum-fan-shroud-black-mmfs-sti-08pbk-7065278.png?v=1770329012&width=220)
![HPS Performance [15 - 21 STI] Black Cold Air Intake w/ Heatshield | 837 - 573WB - JDMuscleIntakesHPS837-573WB](http://jdmuscleusa.com/cdn/shop/files/hps-performance-15-21-sti-black-cold-air-intake-w-heatshield-837-573wb-6543550.jpg?v=1770329175&width=220)
![HPS Performance [15 - 21 STI] Black Cold Air Intake w/ Heatshield | 837 - 573WB - JDMuscleIntakesHPS837-573WB](http://jdmuscleusa.com/cdn/shop/files/hps-performance-15-21-sti-black-cold-air-intake-w-heatshield-837-573wb-2455727.jpg?v=1770329175&width=220)
![GrimmSpeed [Subaru Models inc. 02 - 14 WRX / 04 - 21 STI] Lightweight Crank Pulley Red | GRM095015R - JDMusclePulleysgrm095015R](http://jdmuscleusa.com/cdn/shop/products/grimmspeed-subaru-models-inc-02-14-wrx-04-21-sti-lightweight-crank-pulley-red-grm095015r-6951138.jpg?v=1770329532&width=220)
![GrimmSpeed [Subaru Models inc. 02 - 14 WRX / 04 - 21 STI] Lightweight Crank Pulley Red | GRM095015R - JDMusclePulleysgrm095015R](http://jdmuscleusa.com/cdn/shop/products/grimmspeed-subaru-models-inc-02-14-wrx-04-21-sti-lightweight-crank-pulley-red-grm095015r-2827011.jpg?v=1770329532&width=220)
![Cobb [18 STI Type RA, 19 STI] Stage 3+ Flex Fuel Power Package | Titanium - Black - JDMuscleFlex FuelcobbSUB0041130FTI-BK](http://jdmuscleusa.com/cdn/shop/files/cobb-18-sti-type-ra-19-sti-stage-3-flex-fuel-power-package-titanium-black-5770544.jpg?v=1772959631&width=220)
![Cobb [18 STI Type RA, 19 STI] Stage 3+ Flex Fuel Power Package | Titanium - Black - JDMuscleFlex FuelcobbSUB0041130FTI-BK](http://jdmuscleusa.com/cdn/shop/files/cobb-18-sti-type-ra-19-sti-stage-3-flex-fuel-power-package-titanium-black-6802810.jpg?v=1772959631&width=220)
![Cobb [15 - 19 WRX/STi] Titanium 3in Catback Exhaust Replacement Hardware Kit - JDMuscleExhaust Gaskets and Hardwarecobb515140-HW](http://jdmuscleusa.com/cdn/shop/products/cobb-15-19-wrxsti-titanium-3in-catback-exhaust-replacement-hardware-kit-4382989.jpg?v=1770330433&width=220)
![Cobb [15 - 19 WRX/STi] Titanium 3in Catback Exhaust Replacement Hardware Kit - JDMuscleExhaust Gaskets and Hardwarecobb515140-HW](http://jdmuscleusa.com/cdn/shop/products/cobb-15-19-wrxsti-titanium-3in-catback-exhaust-replacement-hardware-kit-3528128.jpg?v=1770330433&width=220)