Optimize your Subaru STI 2004-2007 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.
Subaru STI 2004-2007 Engine Parts
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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 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 10 leftRegular price From $314.95Sale price From $314.95 Regular priceUnit price per$349.94 -
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 Radiator Shroud w/ Integrated Tool Tray - Black WRX/STI 2002-2007 | 096005
Only 16 leftRegular price $83.00Sale price $83.00 Regular priceUnit price per$83.00 -
In StockGrimmspeed Radiator Shroud w/ Integrated Tool Tray - Red WRX/STI 2002-2007 | 096006
Only 1 leftRegular price $83.00Sale price $83.00 Regular priceUnit price per$83.00 -
In StockInjector Dymanics Fuel Injector PnP Adapter USCAR to EV1 - Universal
Regular price $11.55Sale price $11.55 Regular priceUnit price per$11.55 -
In StockInjector Dynamics Denso EV1 PnP Injector Adapter - Universal
Only 16 leftRegular price $17.33Sale price $17.33 Regular priceUnit price per$17.33 -
Injector Dynamics Denso OBD2 PnP Injector Adapter - Universal
Regular price $17.33Sale price $17.33 Regular priceUnit price per$17.33 -
In StockInjector Dynamics ID-F750 Performance Fuel Filter - Universal
Only 11 leftRegular price $346.50Sale price $346.50 Regular priceUnit price per$346.50 -
Mishimoto Complete Cooling Upgrade Combo WRX/STI 2002-2007
Regular price $399.00Sale price $399.00 Regular priceUnit price per$0.00 -
Up to $34.05 off
In StockMishimoto Radiator WRX/STI 2002-2007
Only 9 leftRegular price $339.95Sale price $339.95 Regular priceUnit price per$374.00
![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)
