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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Subaru OEM Outer Middle Timing Cover Most Turbo Subaru Models | 13570AA045
Regular price $38.23Sale price $38.23 Regular priceUnit price per$38.23 -
IAG Performance Replacement Blow Off Valve Elbow Silver
Fits: 02-07 WRX, 04-21 STI
Regular price $64.99Sale price $64.99 Regular priceUnit price per$64.99 -
Subaru OEM Oil Return Hose EJ25 Turbo Models | 807515712
Regular price $12.92Sale price $12.92 Regular priceUnit price per$12.92 -
Up to $19.05 off
In StockMishimoto 02-07 WRX / 04-21 STI Aluminum Coolant Expansion Tank Black | MMRT-WRX-01EBK
Only 8 leftRegular price $188.95Sale price $188.95 Regular priceUnit price per$208.00 -
iBR FLX01 - Upgrade Kit | 3 Pin and 5 Pin Harnesses
Regular price $399.99Sale price $399.99 Regular priceUnit price per$399.99 -
IAG 02-14 WRX/04-21 STI/04-13 FXT/05-12 LGT Timing Guide, Comp Tensioner & Red Racing Timing Belt Kit | IAG-ENG-5130
Regular price $899.99Sale price $899.99 Regular priceUnit price per$899.99 -
IAG Red Racing Timing Belt
Fits: 02-14 WRX, 04-21 STI, 04-13 FXT, 05-12 LGT
Regular price $229.99Sale price $229.99 Regular priceUnit price per$229.99 -
IAG V3 Top Feed TGV Housings with Butterfly Pass Thru
Fits: 08-14 WRX, 07-14 STI, 07-12 LGT, 09-13 FXT
Regular price $399.99Sale price $399.99 Regular priceUnit price per$399.99 -
IAG 02-14 WRX/04-21 STI Timing Belt Kit with IAG Black Racing Belt, Timing Guide, Adjustable Idlers & Tensioner | IAG-ENG-5132BK
Regular price $699.99Sale price $699.99 Regular priceUnit price per$699.99 -
IAG 750 EJ25 Subaru Closed Deck Short Block - 750BHP
Fits: WRX, STI, LGT, FXT
Regular price $5,499.99Sale price $5,499.99 Regular priceUnit price per$5,499.99 -
IAG 950 EJ25 Subaru Closed Deck Short Block - 950 BHP
Fits: WRX, STI, LGT, FXT
Regular price $6,499.99Sale price $6,499.99 Regular priceUnit price per$6,499.99 -
IAG 1150 2.5L Subaru Closed Deck Short Block - 1150 BHP
Fits: WRX, STI, LGT, FXT
Regular price $9,499.99Sale price $9,499.99 Regular priceUnit price per$9,499.99 -
IAG 02-14 WRX / 04-21 STI / 05-09 LGT / 04-13 FXT 550 Street Cylinder Heads Package | IAG-ENG-H550WE
Regular price $3,399.99Sale price $3,399.99 Regular priceUnit price per$3,399.99 -
IAG 02-14 WRX, 04-21 STI, 05-09 LGT, 04-13 FXT 550 Street Cylinder Heads Package | IAG-ENG-H550VE
Regular price $3,399.99Sale price $3,399.99 Regular priceUnit price per$3,399.99 -
IAG 02-14 WRX, 04-21 STI, 05-09 LGT, 04-13 FXT 550 Street Cylinder Heads Package | IAG-ENG-H550DE
Regular price $3,399.99Sale price $3,399.99 Regular priceUnit price per$3,399.99 -
IAG 02-14 WRX, 04-21 STI, 05-09 LGT, 04-13 FXT 550 Street Cylinder Heads Package | IAG-ENG-H550SE
Regular price $3,399.99Sale price $3,399.99 Regular priceUnit price per$3,399.99