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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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)
GrimmSpeed Alternator Cover Red | 099017
Fits: 02-14 WRX, 04-21 STI
Regular 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 1 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 -
In StockInjector Dynamics Denso OBD2 PnP Injector Adapter - Universal
Only 5 leftRegular price $17.33Sale price $17.33 Regular priceUnit price per$17.33 -
In StockInjector Dynamics ID-F750 Performance Fuel Filter - Universal
Only 9 leftRegular price $346.50Sale price $346.50 Regular priceUnit price per$346.50 -
Up to $495.60 off
In StockInvidia Regular N1 Burnt Tip Cat Back Exhaust WRX/STI 2002-2007 | HS02SW1GTT
Only 6 leftRegular price $1,092.00Sale price $1,092.00 Regular priceUnit price per$1,587.60 -
Up to $495.60 offInvidia Regular Stainless Steel Tip N1 Muffler Cat Back Exhaust WRX/STI 2002-2007 | HS02SW1GTP
Regular price $1,092.00Sale price $1,092.00 Regular priceUnit price per$1,587.60 -
Up to $743.80 off
In StockInvidia Full Titanium Cat Back Exhaust WRX/STI 2002-2007 | HS02SW1TRG
Only 7 leftRegular price $1,359.00Sale price $1,359.00 Regular priceUnit price per$2,102.80 -
Up to $545.60 offInvidia G200 Racing Titanium Cat Back Exhaust WRX/STI 2002-2007 | HS02SW1G2T
Regular price $1,203.00Sale price $1,203.00 Regular priceUnit price per$1,748.60 -
Up to $114.40 offPerrin Black Air Oil Separator WRX/STI w/ TMIC 2002-2007 | PSP-ENG-605BK
Regular price $457.60Sale price $457.60 Regular priceUnit price per$572.00 -
Up to $114.40 offPerrin Air Oil Separator Black w/ FMIC | PSP-ENG-607BK
Fits: 02-14 WRX, 04-21 STI, 05-09 LGT
Regular price $457.60Sale price $457.60 Regular priceUnit price per$572.00 -
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 6 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)
