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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Torque Solution 06-07 WRX / 04-21 STI Throttle Body Spacer Red | TS-TBS-027R
Regular price $78.00Sale price $78.00 Regular priceUnit price per$78.00 -
ACL 02-14 WRX / 04-21 STI Race Main Bearing Set Standard Size Position 3 | 5M8297H-STD
Regular price $122.88Sale price $122.88 Regular priceUnit price per$122.88 -
Torque Solution 06-07 WRX / 04-21 STI Throttle Body Spacer Silver | TS-TBS-027
Regular price $78.00Sale price $78.00 Regular priceUnit price per$78.00 -
Turbo XS 02-07 WRX / 04-21 STI RFL Series Recirculating Bypass Valve | TXS-WS-RBV
Regular price $249.99Sale price $249.99 Regular priceUnit price per$249.99 -
Kartboy 02-14 WRX / 04-21 STI / 94-09 Legacy / 98-13 Forester Aluminum Single Belt Crank Pulley | KB-050-EJ-S
Regular price $125.00Sale price $125.00 Regular priceUnit price per$125.00 -
GSC Power-Division 02-14 WRX / 04-21 STI Super Alloy Exhaust Valves +1 | 2017-8
Regular price $211.92Sale price $211.92 Regular priceUnit price per$211.92 -
Up to $54.99 off
In StockTorque Solution 02-07 WRX / 04-21 STI / 04-08 FXT 3 Inch Recirculating Style Turbo Inlet Hose - Black | TS-SU-565-R
Only 2 leftRegular price $245.00Sale price $245.00 Regular priceUnit price per$299.99 -
Killer B Motorsport 02-14 WRX / 04-21 STI 4-1 Max VE Holy Header Exhaust Manifold 2 Bolt | HH-2BOLT-VE
Regular price $1,599.00Sale price $1,599.00 Regular priceUnit price per$1,599.00 -
IAG Black Timing Belt Kit | Competition Tensioner / Belt / Guide
Fits: 02-14 WRX, 04-21 STI, 05-12 LGT, 04-13 FXT
Regular price $899.99Sale price $899.99 Regular priceUnit price per$899.99 -
Turbo XS 3in Downpipe to Stock Cat-Back Adapter w/ Stainless Exhaust Gasket | ADA-3DP-OEMCB-1
Regular price $84.00Sale price $84.00 Regular priceUnit price per$84.00 -
Turbosmart 02-07 WRX / 04-21 STI / 06-08 FXT Plumb Back Recirculating Blow Off Valve Black | TS-0205-1216
Regular price $329.95Sale price $329.95 Regular priceUnit price per$329.95 -
HKS 02-14 WRX / 04-21 STI / 05-12 LGT / 04-13 FXT Fine Tune Timing Belt | 24999-AF001
Regular price $383.00Sale price $383.00 Regular priceUnit price per$383.00 -
Verus Engineering 02-21 WRX/STI / 13-21 BRZ/FRS/86 RLA Oil Cap Anodized Red | A0270A-RED
Regular price $78.10Sale price $78.10 Regular priceUnit price per$71.00 -
Verus Engineering 02-21 WRX/STI / 13-21 BRZ/FRS/86 RLA Oil Cap Anodized Red | A0270A-BLK
Regular price $78.10Sale price $78.10 Regular priceUnit price per$71.00 -
HKS 04-21 STI Fuel Upgrade Kit | 14007-AF003
Regular price $1,187.00Sale price $1,187.00 Regular priceUnit price per$1,187.00 -
Moroso 02-14 WRX / 04-21 STI Aluminum Oil Pan and Oil Pick Up Combo | 20968
Regular price $1,011.99Sale price $1,011.99 Regular priceUnit price per$1,011.99