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 $78.05 offMishimoto Top Mount Intercooler Kit Black & Blue Hoses WRX/STI 2002-2007
Regular price $776.95Sale price $776.95 Regular priceUnit price per$855.00 -
Up to $78.05 offMishimoto Top Mount Intercooler Kit Black & Red Hoses WRX/STI 2002-2007
Regular price $776.95Sale price $776.95 Regular priceUnit price per$855.00 -
![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 Black | MMHOSE-SUB-IHBK](//jdmuscleusa.com/cdn/shop/products/mishimoto-black-silicone-turbo-inlet-hose-subaru-wrx-2002-2007-sti-2004-2019-turbo-inlet-hoses-and-pipes-mishimoto-mmhose-sub-ihbk-2.jpg?v=1746735998&width=220)
![Mishimoto [02-07 WRX, 04-21 STI, 04-08 FXT] Turbo Inlet Hose Black | MMHOSE-SUB-IHBK](//jdmuscleusa.com/cdn/shop/products/mishimoto-black-silicone-turbo-inlet-hose-subaru-wrx-2002-2007-sti-2004-2019-turbo-inlet-hoses-and-pipes-mishimoto-mmhose-sub-ihbk.jpg?v=1746735998&width=220)
Up to $28.05 off
In StockMishimoto Turbo Inlet Hose Black | MMHOSE-SUB-IHBK
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 -
Up to $2.10 off
In StockMishimoto 1.375-in D X 3-in L Straight Coupler - Universal
Only 3 leftRegular price From $7.20Sale price From $7.20 Regular priceUnit price per$0.00 -
Up to $1.05 offMishimoto 0.875-in to 1.125-in Transition Coupler - Universal
Regular price From $6.95Sale price From $6.95 Regular priceUnit price per$0.00 -
Up to $27.29 off
In StockMishimoto 2.5-inch 45 Degree Bend Coupler - Universal
Only 6 leftRegular price From $44.95Sale price From $44.95 Regular priceUnit price per$0.00 -
Up to $2.10 off
In StockMishimoto 2.5-inch Long Straight Coupler - Universal
Only 2 leftRegular price From $6.95Sale price From $6.95 Regular priceUnit price per$0.00 -
Up to $10.98 off
In StockMishimoto 2.5-inch Straight Hump Coupler - Universal
Only 3 leftRegular price From $17.95Sale price From $17.95 Regular priceUnit price per$25.00 -
Up to $17.05 off
In StockMishimoto In-Line Oil Thermostat - Universal
Only 4 leftRegular price $166.95Sale price $166.95 Regular priceUnit price per$184.00 -
Up to $292.76 offMishimoto Silver Front Mount Intercooler Kit w/ Intake WRX/STI 2002-2007
Regular price $1,308.95Sale price $1,308.95 Regular priceUnit price per$1,601.71 -
Up to $40.05 off
In StockMishimoto Gold R Line Intercooler - Universal
Only 1 leftRegular price $398.95Sale price $398.95 Regular priceUnit price per$439.00 -
In StockMishimoto Magnetic Oil Drain Plug M12 x 1.25 Black - Universal
Only 5 leftRegular price $32.00Sale price $32.00 Regular priceUnit price per$32.00 -
Up to $40.05 off
In StockMishimoto Large Bar and Plate Dual Pass Oil Cooler - Universal
Only 2 leftRegular price $399.95Sale price $399.95 Regular priceUnit price per$440.00 -
Up to $30.05 off
In StockMishimoto Small Bar and Plate Dual Pass Oil Cooler - Universal
Only 6 leftRegular price $296.95Sale price $296.95 Regular priceUnit price per$327.00 -
GrimmSpeed 02-14 WRX / 04-21 STI Alternator Cover Hi-Vis Neon Yellow | 099050
Regular price $141.00Sale price $141.00 Regular priceUnit price per$141.00
![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)
![Mishimoto [02-07 WRX, 04-21 STI, 04-08 FXT] Turbo Inlet Hose Black | MMHOSE-SUB-IHBK](http://jdmuscleusa.com/cdn/shop/products/mishimoto-black-silicone-turbo-inlet-hose-subaru-wrx-2002-2007-sti-2004-2019-turbo-inlet-hoses-and-pipes-mishimoto-mmhose-sub-ihbk-2.jpg?v=1746735998&width=220)
![Mishimoto [02-07 WRX, 04-21 STI, 04-08 FXT] Turbo Inlet Hose Black | MMHOSE-SUB-IHBK](http://jdmuscleusa.com/cdn/shop/products/mishimoto-black-silicone-turbo-inlet-hose-subaru-wrx-2002-2007-sti-2004-2019-turbo-inlet-hoses-and-pipes-mishimoto-mmhose-sub-ihbk.jpg?v=1746735998&width=220)
