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 [02-07 WRX, 04-07 STI, 04-08 FXT] Cold Air Intake - Red | 060075](//jdmuscleusa.com/cdn/shop/products/grimmspeed-cold-air-intake-red-wrx-sti-2002-2007-forester-xt-2004-2008-060075-cold-air-intakes-grimmspeed-grm060075.jpg?v=1614517789&width=220)
![GrimmSpeed [02-07 WRX, 04-07 STI, 04-08 FXT] Cold Air Intake - Red | 060075](//jdmuscleusa.com/cdn/shop/products/grimmspeed-cold-air-intake-red-wrx-sti-2002-2007-forester-xt-2004-2008-060075-cold-air-intakes-grimmspeed-grm060075-2.jpg?v=1614675455&width=220)
GrimmSpeed Cold Air Intake - Red | 060075
Fits: 02-07 WRX, 04-07 STI, 04-08 FXT
Regular price $484.00Sale price $484.00 Regular priceUnit price per$484.00 -
Grimmspeed Top Mount Intercooler Splitter
Fits: 06-07 WRX/STI
Regular price $306.00Sale price $306.00 Regular priceUnit price per$306.00 -
Up to $434.20 off
In StockInvidia N1 Racing Stainless Steel Cat Back Exhaust WRX/STI 2002-2007 | HS02SW1GTR
Only 12 leftRegular price $956.00Sale price $956.00 Regular priceUnit price per$1,390.20 -
Up to $11 offPERRIN 02-07 WRX / 04-21 STI Throttle Body Hose Blue | PSP-ITR-301BL
Regular price $33.00Sale price $33.00 Regular priceUnit price per$44.00 -
Up to $49.75 off
In StockPerrin EBCS Pro Electronic Boost Control Solenoid WRX/STI 2002-2007 | ASM-TAC-729
Only 9 leftRegular price $149.25Sale price $149.25 Regular priceUnit price per$199.00 -
Up to $4.25 off
In StockPerrin 15mm Polyurethane Exhaust Hanger
Fits: 93-08 WRX/STI/FXT/Impreza
Regular price $12.75Sale price $12.75 Regular priceUnit price per$17.00 -
Up to $12.05 off
In StockMishimoto Slim Electric Fan - Universal
Regular price From $66.75Sale price From $66.75 Regular priceUnit price per$0.00 -
Up to $20.05 off
In StockMishimoto 19 Row Oil Cooler - Universal
Only 10 leftRegular price $196.95Sale price $196.95 Regular priceUnit price per$217.00 -
Up to $3.57 off
In StockMishimoto Straight Coupler 2.5-in D X 3-in L - Universal
Regular price From $11.95Sale price From $11.95 Regular priceUnit price per$13.00 -
![Mishimoto [02-07 WRX, 04-21 STI, 04-08 FXT] Turbo Inlet Hose Red | MMHOSE-SUB-IHRD](//jdmuscleusa.com/cdn/shop/products/mishimoto-red-silicone-turbo-inlet-hose-subaru-wrx-2002-2007-sti-2004-2019-turbo-inlet-hoses-and-pipes-mishimoto-mmhose-sub-ihrd.jpg?v=1614515263&width=220)
![Mishimoto [02-07 WRX, 04-21 STI, 04-08 FXT] Turbo Inlet Hose Red | MMHOSE-SUB-IHRD](//jdmuscleusa.com/cdn/shop/products/mishimoto-red-silicone-turbo-inlet-hose-subaru-wrx-2002-2007-sti-2004-2019-turbo-inlet-hoses-and-pipes-mishimoto-mmhose-sub-ihrd-2.jpg?v=1614515264&width=220)
Up to $28.05 off
In StockMishimoto Turbo Inlet Hose Red | MMHOSE-SUB-IHRD
Fits: 02-07 WRX, 04-21 STI, 04-08 FXT
Only 2 leftRegular price $276.95Sale price $276.95 Regular priceUnit price per$305.00 -
GrimmSpeed 02-14 WRX / 04-21 STI / 05-12 LGT / 04-13 FXT Phenolic Thermal Spacer 3mm | 018001
Regular price $80.00Sale price $80.00 Regular priceUnit price per$80.00 -
Grimmspeed Top Mount Intercooler Splitter - Subaru Scoop
Fits: 04-05 STI
Regular price $306.00Sale price $306.00 Regular priceUnit price per$306.00 -
In StockGrimmspeed Hood Struts
Fits: 02-07 WRX/STI
Only 11 leftRegular price $189.00Sale price $189.00 Regular priceUnit price per$189.00 -
![GrimmSpeed [02-07 WRX, 04-07 STI, 04-08 FXT] Cold Air Intake - Black | 060074](//jdmuscleusa.com/cdn/shop/products/grimmspeed-cold-air-intake-black-wrx-sti-2002-2007-forester-xt-2004-2008-060074-cold-air-intakes-grimmspeed-grm060074.jpg?v=1614517777&width=220)
![GrimmSpeed [02-07 WRX, 04-07 STI, 04-08 FXT] Cold Air Intake - Black | 060074](//jdmuscleusa.com/cdn/shop/products/grimmspeed-cold-air-intake-black-wrx-sti-2002-2007-forester-xt-2004-2008-060074-cold-air-intakes-grimmspeed-grm060074-2.jpg?v=1614675448&width=220)
GrimmSpeed Cold Air Intake - Black | 060074
Fits: 02-07 WRX, 04-07 STI, 04-08 FXT
Regular price $484.00Sale price $484.00 Regular priceUnit price per$484.00 -
Up to $38.05 off
In StockMishimoto R Line Intercooler Black - Universal
Only 4 leftRegular price $376.95Sale price $376.95 Regular priceUnit price per$415.00 -
Up to $35.05 off
In StockMishimoto M Line Intercooler Eat Sleep Race Edition G/G - Universal
Only 6 leftRegular price $351.95Sale price $351.95 Regular priceUnit price per$387.00
![GrimmSpeed [02-07 WRX, 04-07 STI, 04-08 FXT] Cold Air Intake - Red | 060075](http://jdmuscleusa.com/cdn/shop/products/grimmspeed-cold-air-intake-red-wrx-sti-2002-2007-forester-xt-2004-2008-060075-cold-air-intakes-grimmspeed-grm060075.jpg?v=1614517789&width=220)
![GrimmSpeed [02-07 WRX, 04-07 STI, 04-08 FXT] Cold Air Intake - Red | 060075](http://jdmuscleusa.com/cdn/shop/products/grimmspeed-cold-air-intake-red-wrx-sti-2002-2007-forester-xt-2004-2008-060075-cold-air-intakes-grimmspeed-grm060075-2.jpg?v=1614675455&width=220)
![Mishimoto [02-07 WRX, 04-21 STI, 04-08 FXT] Turbo Inlet Hose Red | MMHOSE-SUB-IHRD](http://jdmuscleusa.com/cdn/shop/products/mishimoto-red-silicone-turbo-inlet-hose-subaru-wrx-2002-2007-sti-2004-2019-turbo-inlet-hoses-and-pipes-mishimoto-mmhose-sub-ihrd.jpg?v=1614515263&width=220)
![Mishimoto [02-07 WRX, 04-21 STI, 04-08 FXT] Turbo Inlet Hose Red | MMHOSE-SUB-IHRD](http://jdmuscleusa.com/cdn/shop/products/mishimoto-red-silicone-turbo-inlet-hose-subaru-wrx-2002-2007-sti-2004-2019-turbo-inlet-hoses-and-pipes-mishimoto-mmhose-sub-ihrd-2.jpg?v=1614515264&width=220)
![GrimmSpeed [02-07 WRX, 04-07 STI, 04-08 FXT] Cold Air Intake - Black | 060074](http://jdmuscleusa.com/cdn/shop/products/grimmspeed-cold-air-intake-black-wrx-sti-2002-2007-forester-xt-2004-2008-060074-cold-air-intakes-grimmspeed-grm060074.jpg?v=1614517777&width=220)
![GrimmSpeed [02-07 WRX, 04-07 STI, 04-08 FXT] Cold Air Intake - Black | 060074](http://jdmuscleusa.com/cdn/shop/products/grimmspeed-cold-air-intake-black-wrx-sti-2002-2007-forester-xt-2004-2008-060074-cold-air-intakes-grimmspeed-grm060074-2.jpg?v=1614675448&width=220)
