Optimize your Subaru STI 2015-2021 engine's performance with a comprehensive range of top-quality aftermarket parts from industry-leading brands. Elevate the power and efficiency of your vehicle with ETS, HKS, Perrin, Mishimoto, AMS, Grimmspeed, Cobb, Remark, PLM, Turbosmart, IAG Performance, and more. Enhance airflow and filtration through AIR INTAKE DUCTS and COLD AIR INTAKES, while maintaining engine cleanliness with AIR OIL SEPARATORS and CATCH CANS. Experience impeccable control and responsiveness with BLOW OFF VALVES and BOOST CONTROL SOLENOID COVERS, complemented by the reliability of ENGINE MOUNTS and meticulously crafted ENGINE MANAGEMENT HARNESSES. Simplify maintenance and improve overall performance with DIPSTICKS and explore comprehensive ENGINE PACKAGE DEALS for a holistic approach to upgrading your Subaru WRX's engine. Unleash the full potential of your vehicle through precision-engineered components designed to deliver both power and durability, all meticulously designed to give your Subaru STI the edge on the road or track.
2015-2021 Subaru WRX STI Engine Parts
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Turbosmart WG38 Ultra-Gate External Wastegate 38hp 35psi Blue - Universal
Regular price $378.22Sale price $378.22 Regular priceUnit price per$368.99 -
Up to $12.42 offTurbosmart WG40 Comp-Gate External Wastegate 40hp 35psi Blue - Universal
Regular price $401.57Sale price $401.57 Regular priceUnit price per$413.99 -
Turbosmart WG38 Ultra-Gate External Wastegate 38hp 35psi Black - Universal
Regular price $378.22Sale price $378.22 Regular priceUnit price per$368.99 -
Turbosmart WG40 Comp-Gate External Wastegate 40hp 35psi Black - Universal
Regular price $424.34Sale price $424.34 Regular priceUnit price per$413.99 -
Turbosmart WG45 Hyper-Gate External Wastegate 17psi Red - Universal
Regular price $396.67Sale price $396.67 Regular priceUnit price per$396.67 -
Up to $56.66 offTurbosmart WG45 Hyper-Gate External Wastegate 45hp 35psi Blue - Universal
Regular price $509.95Sale price $509.95 Regular priceUnit price per$566.61 -
Turbosmart WG45 Hyper-Gate External Wastegate 45hp 35psi Black - Universal
Regular price $498.14Sale price $498.14 Regular priceUnit price per$485.99 -
Up to $15.26 offTurbosmart WG50 Pro-Gate Wastegate 50 Lite 35psi Blue - Universal
Regular price $493.49Sale price $493.49 Regular priceUnit price per$508.75 -
Turbosmart WG50 Pro-Gate Wastegate 50 Lite 35psi Black - Universal
Regular price $562.49Sale price $562.49 Regular priceUnit price per$508.75 -
Up to $8.30 offTurbosmart WG38 Ultragate 38 Wastegate 14psi Blue - Universal
Regular price $268.44Sale price $268.44 Regular priceUnit price per$276.74 -
Turbosmart WG38 Ultragate 38 Wastegate 14psi Black - Universal
Regular price $276.74Sale price $276.74 Regular priceUnit price per$276.74 -
Up to $21.20 off
In StockTurbosmart IWG75 150mm Rod 14 PSI Black Internal Wastegate Actuator - Universal
Only 4 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 6 leftRegular price From $314.95Sale price From $314.95 Regular priceUnit price per$349.94 -
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 -
Up to $11.05 off
In StockMishimoto Transmission Cooler Kit - Universal
Only 7 leftRegular price $110.95Sale price $110.95 Regular priceUnit price per$122.00 -
![Mishimoto [02-07 WRX, 04-21 STI, 04-08 FXT] Turbo Inlet Hose Blue | MMHOSE-SUB-IHBL](//jdmuscleusa.com/cdn/shop/products/mishimoto-blue-silicone-turbo-inlet-hose-subaru-wrx-2002-2007-sti-2004-2019-turbo-inlet-hoses-and-pipes-mishimoto-mmhose-sub-ihbl.jpg?v=1614515266&width=220)
![Mishimoto [02-07 WRX, 04-21 STI, 04-08 FXT] Turbo Inlet Hose Blue | MMHOSE-SUB-IHBL](//jdmuscleusa.com/cdn/shop/products/mishimoto-blue-silicone-turbo-inlet-hose-subaru-wrx-2002-2007-sti-2004-2019-turbo-inlet-hoses-and-pipes-mishimoto-mmhose-sub-ihbl-2.jpg?v=1614515267&width=220)
Up to $28.05 off
In StockMishimoto Turbo Inlet Hose Blue | MMHOSE-SUB-IHBL
Fits: 02-07 WRX, 04-21 STI, 04-08 FXT
Only 5 leftRegular price $276.95Sale price $276.95 Regular priceUnit price per$305.00
![Mishimoto [02-07 WRX, 04-21 STI, 04-08 FXT] Turbo Inlet Hose Blue | MMHOSE-SUB-IHBL](http://jdmuscleusa.com/cdn/shop/products/mishimoto-blue-silicone-turbo-inlet-hose-subaru-wrx-2002-2007-sti-2004-2019-turbo-inlet-hoses-and-pipes-mishimoto-mmhose-sub-ihbl.jpg?v=1614515266&width=220)
![Mishimoto [02-07 WRX, 04-21 STI, 04-08 FXT] Turbo Inlet Hose Blue | MMHOSE-SUB-IHBL](http://jdmuscleusa.com/cdn/shop/products/mishimoto-blue-silicone-turbo-inlet-hose-subaru-wrx-2002-2007-sti-2004-2019-turbo-inlet-hoses-and-pipes-mishimoto-mmhose-sub-ihbl-2.jpg?v=1614515267&width=220)