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 StockIAG Red Racing Timing Belt
Fits: 02-14 WRX, 04-21 STI, 04-13 FXT, 05-12 LGT
Only 1 leftRegular price $229.99Sale price $229.99 Regular priceUnit price per$229.99 -
In StockIAG V3 Top Feed TGV Housings with Butterfly Pass Thru
Fits: 08-14 WRX, 07-14 STI, 07-12 LGT, 09-13 FXT
Only 1 leftRegular price $399.99Sale price $399.99 Regular priceUnit price per$399.99 -
In StockIAG 02-14 WRX/04-21 STI Timing Belt Kit with IAG Black Racing Belt, Timing Guide, Adjustable Idlers & Tensioner | IAG-ENG-5132BK
Only 1 leftRegular price $699.99Sale price $699.99 Regular priceUnit price per$699.99 -
In StockIAG 750 EJ25 Subaru Closed Deck Short Block - 750BHP
Fits: WRX, STI, LGT, FXT
Only 1 leftRegular price $5,499.99Sale price $5,499.99 Regular priceUnit price per$5,499.99 -
In StockIAG 950 EJ25 Subaru Closed Deck Short Block - 950 BHP
Fits: WRX, STI, LGT, FXT
Only 1 leftRegular price $6,499.99Sale price $6,499.99 Regular priceUnit price per$6,499.99 -
In StockIAG 1150 2.5L Subaru Closed Deck Short Block - 1150 BHP
Fits: WRX, STI, LGT, FXT
Only 1 leftRegular price $9,499.99Sale price $9,499.99 Regular priceUnit price per$9,499.99 -
In StockIAG 02-14 WRX / 04-21 STI / 05-09 LGT / 04-13 FXT 550 Street Cylinder Heads Package | IAG-ENG-H550WE
Only 1 leftRegular price $3,399.99Sale price $3,399.99 Regular priceUnit price per$3,399.99 -
In StockIAG 02-14 WRX, 04-21 STI, 05-09 LGT, 04-13 FXT 550 Street Cylinder Heads Package | IAG-ENG-H550VE
Only 1 leftRegular price $3,399.99Sale price $3,399.99 Regular priceUnit price per$3,399.99 -
In StockIAG 02-14 WRX, 04-21 STI, 05-09 LGT, 04-13 FXT 550 Street Cylinder Heads Package | IAG-ENG-H550DE
Only 1 leftRegular price $3,399.99Sale price $3,399.99 Regular priceUnit price per$3,399.99 -
In StockIAG 02-14 WRX, 04-21 STI, 05-09 LGT, 04-13 FXT 550 Street Cylinder Heads Package | IAG-ENG-H550SE
Only 1 leftRegular price $3,399.99Sale price $3,399.99 Regular priceUnit price per$3,399.99 -
In StockIAG 02-14 WRX, 04-21 STI, 05-09 LGT, 04-13 FXT 550 Street Cylinder Heads Package | IAG-ENG-H550WL
Only 1 leftRegular price $5,149.99Sale price $5,149.99 Regular priceUnit price per$5,149.99 -
![Turbo XS [02 - 14 WRX, 04 - 21 STI, 05 - 09 LGT, 04 - 13 FXT] Up - Pipe Hardware Kit | WS - UP - HW - JDMuscleExhaust Gaskets and HardwaretxsWS-UP-HW](//jdmuscleusa.com/cdn/shop/products/turbo-xs-02-14-wrx-04-21-sti-05-09-lgt-04-13-fxt-up-pipe-hardware-kit-ws-up-hw-7382731.jpg?v=1770328594&width=220)
Up to $1 off
In StockTurbo XS Up-Pipe Hardware Kit
Fits: 02-14 WRX, 04-21 STI, 05-09 LGT, 04-13 FXT
Regular price $28.00Sale price $28.00 Regular priceUnit price per$29.00 -
In StockACL 02-14 WRX / 04-21 STI Main Bearing Set Standard Size Position 3 | 5M8297A-STD
Only 13 leftRegular price $34.00Sale price $34.00 Regular priceUnit price per$34.00 -
Up to $91.05 offMishimoto 01-07 WRX/STI Performance Aluminum Radiator Manual Transmission | WRX-01
Regular price $339.95Sale price $339.95 Regular priceUnit price per$431.00 -
In StockACL 02-14 WRX / 04-21 STI Rod Bearings Standard Size 52mm Journal | 4B8296A-STD
Only 13 leftRegular price $18.00Sale price $18.00 Regular priceUnit price per$18.00 -
Aeromotive 02-14 WRX / 07-21 STI Billet Fuel Rails - Black | 14169
Regular price $300.31Sale price $300.31 Regular priceUnit price per$300.31
![Turbo XS [02 - 14 WRX, 04 - 21 STI, 05 - 09 LGT, 04 - 13 FXT] Up - Pipe Hardware Kit | WS - UP - HW - JDMuscleExhaust Gaskets and HardwaretxsWS-UP-HW](http://jdmuscleusa.com/cdn/shop/products/turbo-xs-02-14-wrx-04-21-sti-05-09-lgt-04-13-fxt-up-pipe-hardware-kit-ws-up-hw-7382731.jpg?v=1770328594&width=220)
