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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Up to $21.20 off
In StockTurbosmart IWG75 150mm Rod 14 PSI Black Internal Wastegate Actuator - Universal
Only 6 leftRegular price $190.79Sale price $190.79 Regular priceUnit price per$211.99 -
Up to $40 off
In StockTurbosmart Comp-Gate40 External Wastegate - Universal
Only 12 leftRegular price From $314.95Sale price From $314.95 Regular priceUnit price per$349.94 -
Walbro 255LPH Fuel Pump + Install for 93-97 Mazda MX-6
Regular price $98.99Sale price $98.99 Regular priceUnit price per$0.00 -
Walbro 255LPH Fuel Pump + Install for 93-97 Mazda MX6
Regular price $98.99Sale price $98.99 Regular priceUnit price per$0.00 -
Walbro 255lph Fuel Pump only FD3S 93-96 Mazda RX7
Regular price $87.99Sale price $87.99 Regular priceUnit price per$0.00 -
Walbro 255LPH Fuel Pump for Mitsubishi Lancer Evo
Regular price From $87.99Sale price From $87.99 Regular priceUnit price per$0.00 -
GrimmSpeed 38mm 2-Bolt External Wastegate Gasket - Universal | 021001
Regular price $13.00Sale price $13.00 Regular priceUnit price per$13.00 -
GrimmSpeed Pair Exhaust Manifold to Crosspipe Gasket - Subaru Turbo | 025001
Regular price $19.00Sale price $19.00 Regular priceUnit price per$19.00 -
GrimmSpeed 2X Thick Exhaust Manifold to Crosspipe Gasket - Subaru EJ Turbo | 077001
Regular price $27.00Sale price $27.00 Regular priceUnit price per$27.00 -
Grimmspeed 44/45mm V-Band External Wastegate Block Off Plate - Subaru Universal | 008008
Regular price $97.00Sale price $97.00 Regular priceUnit price per$97.00 -
GrimmSpeed 4-Bolt T4 Divided Turbo Manifold Gasket - Universal | 020029
Regular price $25.00Sale price $25.00 Regular priceUnit price per$25.00 -
![GrimmSpeed [02-14 WRX, 04-21 STI] Alternator Cover Red | 099017](//jdmuscleusa.com/cdn/shop/products/grimmspeed-red-alternator-cover-subaru-wrx-sti-forester-xt-outback-xt-099017-alternator-covers-grimmspeed-grm099017.jpg?v=1625804048&width=220)
![GrimmSpeed [02-14 WRX, 04-21 STI] Alternator Cover Red | 099017](//jdmuscleusa.com/cdn/shop/products/AlternatorCover-7__84781.1614103288.jpg?v=1625804098&width=220)
In StockGrimmSpeed Alternator Cover Red | 099017
Fits: 02-14 WRX, 04-21 STI
Only 1 leftRegular price $135.00Sale price $135.00 Regular priceUnit price per$135.00 -
In StockGrimmSpeed 08-14 WRX/ 08-21 STI Gates Stretch Belt Pulley Adapter | 095012
Only 1 leftRegular price $32.00Sale price $32.00 Regular priceUnit price per$32.00 -
![GrimmSpeed [Subaru Models inc. 02-14 WRX / 04-21 STI] Lightweight Crank Pulley | 095015BK](//jdmuscleusa.com/cdn/shop/products/grimmspeed-lightweight-crank-pulley-1998-2001-subaru-impreza-25rs-pulleys-grimmspeed-black-095015bk-2.jpg?v=1742240962&width=220)
In StockGrimmSpeed Lightweight Crank Pulley | 095015BK
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 -
![GrimmSpeed [02-14 WRX, 04-21 STI, 05-12 LGT, 04-13 FXT] Phenolic Thermal Spacer 8mm | 019001](//jdmuscleusa.com/cdn/shop/products/grimmspeed-3x-thick-8mm-phenolic-spacer-wrx-sti-legacy-gt-forester-xt-019001-phenolic-thermal-intake-manifold-spacers-grimmspeed-grm019001.jpg?v=1614517849&width=220)
![GrimmSpeed [02-14 WRX, 04-21 STI, 05-12 LGT, 04-13 FXT] Phenolic Thermal Spacer 8mm | 019001](//jdmuscleusa.com/cdn/shop/files/grimmspeed-phenolic-thermal-spacer-8mm-2002-2014-wrx-2004-2021-sti-2005-2012-lgt-2004-2013-fxt-019001-780723_500x500_ef3883b7-1e66-4832-af53-12f192e8f8ad.jpg?v=1688750773&width=220)
In StockGrimmSpeed Phenolic Thermal Spacer 8mm | 019001
Fits: 02-14 WRX, 04-21 STI, 05-12 LGT, 04-13 FXT
Only 1 leftRegular price $94.00Sale price $94.00 Regular priceUnit price per$94.00 -
In StockGrimmspeed 15-21 STI Stage 1 Power Package w/ Black Intake |191013
Only 1 leftRegular price $603.00Sale price $603.00 Regular priceUnit price per$603.00
![GrimmSpeed [02-14 WRX, 04-21 STI] Alternator Cover Red | 099017](http://jdmuscleusa.com/cdn/shop/products/grimmspeed-red-alternator-cover-subaru-wrx-sti-forester-xt-outback-xt-099017-alternator-covers-grimmspeed-grm099017.jpg?v=1625804048&width=220)
![GrimmSpeed [02-14 WRX, 04-21 STI] Alternator Cover Red | 099017](http://jdmuscleusa.com/cdn/shop/products/AlternatorCover-7__84781.1614103288.jpg?v=1625804098&width=220)
![GrimmSpeed [Subaru Models inc. 02-14 WRX / 04-21 STI] Lightweight Crank Pulley | 095015BK](http://jdmuscleusa.com/cdn/shop/products/grimmspeed-lightweight-crank-pulley-1998-2001-subaru-impreza-25rs-pulleys-grimmspeed-black-095015bk-2.jpg?v=1742240962&width=220)
![GrimmSpeed [02-14 WRX, 04-21 STI, 05-12 LGT, 04-13 FXT] Phenolic Thermal Spacer 8mm | 019001](http://jdmuscleusa.com/cdn/shop/products/grimmspeed-3x-thick-8mm-phenolic-spacer-wrx-sti-legacy-gt-forester-xt-019001-phenolic-thermal-intake-manifold-spacers-grimmspeed-grm019001.jpg?v=1614517849&width=220)
![GrimmSpeed [02-14 WRX, 04-21 STI, 05-12 LGT, 04-13 FXT] Phenolic Thermal Spacer 8mm | 019001](http://jdmuscleusa.com/cdn/shop/files/grimmspeed-phenolic-thermal-spacer-8mm-2002-2014-wrx-2004-2021-sti-2005-2012-lgt-2004-2013-fxt-019001-780723_500x500_ef3883b7-1e66-4832-af53-12f192e8f8ad.jpg?v=1688750773&width=220)
