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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In StockWalbro 450lph In-Tank Fuel Pump E85 Version F90000267 - Universal
Regular price From $128.99Sale price From $128.99 Regular priceUnit price per$0.00 -
Up to $20.50 off
In StockPerrin Oil Cap Round Style Black Most Subaru Models | PSP-ENG-711BK
Only 3 leftRegular price $61.50Sale price $61.50 Regular priceUnit price per$82.00 -
Up to $4.05 offMishimoto Carbon Fiber Radiator Cap - Universal
Regular price $40.95Sale price $40.95 Regular priceUnit price per$45.00 -
Grimmspeed Up Pipe 3-Bolt Inlet - Subaru 2002-2014 WRX / 2004-21 STI / 2005-2009 LGT / 2004-2013 FXT | 007064
Regular price $393.00Sale price $393.00 Regular priceUnit price per$393.00 -
Killer B Motorsport 02-14 WRX / 04-21 STI High Performance Oil Pan w/ OG Style Pick and Baffle Combo | PPBC
Regular price $681.00Sale price $681.00 Regular priceUnit price per$681.00 -
Up to $20 off
In StockAEM Electronics E85 High Flow In-Tank Fuel Pump - Universal | 50-1200
Regular price $155.95Sale price $155.95 Regular priceUnit price per$175.95 -
Up to $45.40 off
In StockARP 02-14 WRX / 02-21 STI Custom Age 625+ Head Stud Kit | 260-4704
Only 19 leftRegular price $610.00Sale price $610.00 Regular priceUnit price per$655.40 -
Up to $13 offSeibon Carbon Fiber Hood/Trunk Prop - Universal
Regular price $117.00Sale price $117.00 Regular priceUnit price per$130.00 -
![Subaru OEM Intake Manifold to TGV Gasket [Most Subaru Models] | 14075AA161](//jdmuscleusa.com/cdn/shop/products/SUB14075AA161.jpg?v=1669935312&width=220)
Subaru OEM Intake Manifold to TGV Gasket | 14075AA161
Fits: Most Subaru Models
Regular price $9.88Sale price $9.88 Regular priceUnit price per$9.88 -
Up to $20 off
In StockRadium Engineering Fuel Rail Plumbing Kit - Parallel
Fits: 04-21 STI
Only 8 leftRegular price $379.95Sale price $379.95 Regular priceUnit price per$399.95 -
![GrimmSpeed [02 - 14 WRX, 04 - 21 STI, 05 - 12 LGT, 04 - 13 FXT] Intake Manifold to TGV Gasket Pair | 023001 - JDMuscleIntake System Gasketgrm023001](//jdmuscleusa.com/cdn/shop/files/grimmspeed-02-14-wrx-04-21-sti-05-12-lgt-04-13-fxt-intake-manifold-to-tgv-gasket-pair-023001-4508665.jpg?v=1770327638&width=220)
GrimmSpeed Intake Manifold to TGV Gasket Pair | 023001
Fits: 02-14 WRX, 04-21 STI, 05-12 LGT, 04-13 FXT
Regular price $29.00Sale price $29.00 Regular priceUnit price per$29.00 -
![GrimmSpeed [02-07 WRX / 04-21 STI] Intercooler Y-Pipe Gaskets | 020024](//jdmuscleusa.com/cdn/shop/products/grimmspeed-top-mount-intercooler-y-pipe-gasket-pair-subaru-wrx-2002-2007-sti-2004-2020-020024-gaskets-grimmspeed-grm020024.jpg?v=1614517939&width=220)
![GrimmSpeed [02-07 WRX / 04-21 STI] Intercooler Y-Pipe Gaskets | 020024](//jdmuscleusa.com/cdn/shop/products/grimmspeed-top-mount-intercooler-y-pipe-gasket-pair-subaru-wrx-2002-2007-sti-2004-2020-020024-gaskets-grimmspeed-grm020024-2.jpg?v=1614675534&width=220)
GrimmSpeed Intercooler Y-Pipe Gaskets | 020024
Fits: 02-07 WRX / 04-21 STI
Regular price $33.00Sale price $33.00 Regular priceUnit price per$33.00 -
Subaru OEM Donut Gasket Subaru Turbo Models | 44022AA123
Regular price $24.70Sale price $24.70 Regular priceUnit price per$24.70 -
Up to $4 off
In StockRadium Engineering DIY Fuel Pump Wiring Kit - Universal
Regular price $75.95Sale price $75.95 Regular priceUnit price per$79.95 -
Up to $29.25 off
In StockPerrin Turbo Heat Shield Turbo | PSP-EXT-001
Fits: 02-14 WRX, 04-21 STI, 05-09 LGT, 04-05 FXT
Regular price $87.75Sale price $87.75 Regular priceUnit price per$117.00 -
![COBB [02 - 07 WRX, 04 - 21 STI, 04 - 08 FXT] Throttle Body Coupler - Black | 712455 - JDMuscleThrottle Body Hosescobb712455](//jdmuscleusa.com/cdn/shop/products/cobb-02-07-wrx-04-21-sti-04-08-fxt-throttle-body-coupler-black-712455-6973469.jpg?v=1770336382&width=220)
In StockCOBB Throttle Body Coupler-Black
Fits: 02-07 WRX, 04-21 STI, 04-08 FXT
Only 20 leftRegular price $58.00Sale price $58.00 Regular priceUnit price per$58.00
![Subaru OEM Intake Manifold to TGV Gasket [Most Subaru Models] | 14075AA161](http://jdmuscleusa.com/cdn/shop/products/SUB14075AA161.jpg?v=1669935312&width=220)
![GrimmSpeed [02 - 14 WRX, 04 - 21 STI, 05 - 12 LGT, 04 - 13 FXT] Intake Manifold to TGV Gasket Pair | 023001 - JDMuscleIntake System Gasketgrm023001](http://jdmuscleusa.com/cdn/shop/files/grimmspeed-02-14-wrx-04-21-sti-05-12-lgt-04-13-fxt-intake-manifold-to-tgv-gasket-pair-023001-4508665.jpg?v=1770327638&width=220)
![GrimmSpeed [02-07 WRX / 04-21 STI] Intercooler Y-Pipe Gaskets | 020024](http://jdmuscleusa.com/cdn/shop/products/grimmspeed-top-mount-intercooler-y-pipe-gasket-pair-subaru-wrx-2002-2007-sti-2004-2020-020024-gaskets-grimmspeed-grm020024.jpg?v=1614517939&width=220)
![GrimmSpeed [02-07 WRX / 04-21 STI] Intercooler Y-Pipe Gaskets | 020024](http://jdmuscleusa.com/cdn/shop/products/grimmspeed-top-mount-intercooler-y-pipe-gasket-pair-subaru-wrx-2002-2007-sti-2004-2020-020024-gaskets-grimmspeed-grm020024-2.jpg?v=1614675534&width=220)
![COBB [02 - 07 WRX, 04 - 21 STI, 04 - 08 FXT] Throttle Body Coupler - Black | 712455 - JDMuscleThrottle Body Hosescobb712455](http://jdmuscleusa.com/cdn/shop/products/cobb-02-07-wrx-04-21-sti-04-08-fxt-throttle-body-coupler-black-712455-6973469.jpg?v=1770336382&width=220)