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 $3.25 offRadium Engineering 6AN Dry Break 27mm Fitting Inner - Universal
Regular price $61.70Sale price $61.70 Regular priceUnit price per$64.95 -
Up to $1 off
In StockRadium Engineering Universal 8AN Orb to 5/16 SAE Male - Universal
Only 2 leftRegular price $18.95Sale price $18.95 Regular priceUnit price per$19.95 -
Radium Engineering Bulkead Harness Internal Triple Walbro F90000262 Pump - Universal
Regular price $80.70Sale price $80.70 Regular priceUnit price per$59.95 -
Up to $5 offRadium Engineering FPD-XR Direct Mount 8AN ORB Fuel Pulse Damper Kit - Universal
Regular price $94.95Sale price $94.95 Regular priceUnit price per$99.95 -
Up to $4.50 off
In StockRadium Engineering Fuel Cell Weld Flange 24-Bolt Aluminum - Universal
Only 4 leftRegular price $85.45Sale price $85.45 Regular priceUnit price per$89.95 -
Up to $1.25 offRadium Engineering -10AN 90 Deg 2-Piece Adapter for 5/8 Push-Lok Hose - Black - Universal
Regular price $23.70Sale price $23.70 Regular priceUnit price per$24.95 -
Up to $3.25 off
In StockRadium Engineering Fuel Pulse Damper - Universal
Only 11 leftRegular price $61.70Sale price $61.70 Regular priceUnit price per$64.95 -
Up to $4.50 off
In StockRadium Engineering 3 Into 1 Distribution Block w/ Fittings - Universal
Only 3 leftRegular price $85.45Sale price $85.45 Regular priceUnit price per$89.95 -
Up to $6.50 offRadium Engineering 8AN Dry Break 27mm Fitting - Universal
Regular price $123.45Sale price $123.45 Regular priceUnit price per$129.95 -
Up to $1.50 off
In StockRadium Engineering -6 AN, -6 AN, -6 AN Y Adapter Fitting - Universal
Only 8 leftRegular price $28.45Sale price $28.45 Regular priceUnit price per$29.95 -
Up to $1 off
In StockRadium Engineering -8AN Inline to 1/8NPT Female Fitting - Universal
Only 5 leftRegular price $18.95Sale price $18.95 Regular priceUnit price per$19.95 -
Up to $4 offRadium Engineering Remote Mount Filler Neck - Universal
Regular price $75.95Sale price $75.95 Regular priceUnit price per$79.95 -
Up to $0.75 offRadium Engineering 3/8 SAE FEMALE TO 90 deg 5/16in Barb - Universal
Regular price $14.20Sale price $14.20 Regular priceUnit price per$14.95 -
Up to $0.75 offRadium Engineering 6AN Male to 1/4NPT Male 90DEG - Universal
Regular price $14.20Sale price $14.20 Regular priceUnit price per$14.95 -
Up to $0.50 off
In StockRadium Engineering 6AN To 6AN Male Fitting - Universal
Regular price $9.45Sale price $9.45 Regular priceUnit price per$9.95 -
Up to $0.50 off
In StockRadium Engineering 6AN To 8AN Male Fitting - Universal
Regular price $9.45Sale price $9.45 Regular priceUnit price per$9.95
