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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ACL **Coated** Subaru 4 EJ20/EJ22/EJ25 Race Series Engine Connecting Rod Bearing Set | 4B8296HC-.025
Regular price $78.00Sale price $78.00 Regular priceUnit price per$78.00 -
ACL Subaru 4 EJ20/EJ22/EJ25 | 5 flange Engine Crankshaft Main Bearing Set | 5M8309A-.75
Regular price $41.00Sale price $41.00 Regular priceUnit price per$41.00 -
Up to $56.25 offACL +005 O/S Subaru 4 EJ20/EJ22/EJ25 Race Series Engine Crankshaft Main Bearing Set | 5M8309HO/S5-.025
Regular price $139.00Sale price $139.00 Regular priceUnit price per$195.25 -
ACL +002 O/S Subaru 4 EJ20/EJ22/EJ25 Race Series Engine Crankshaft Main Bearing Set | 5M8309HO/S2-.025
Regular price $133.00Sale price $133.00 Regular priceUnit price per$133.00 -
Up to $56.25 offACL +005 O/S Subaru 4 EJ20/EJ22/EJ25 Race Series Engine Crankshaft Main Bearing Set | 5M8309HXO/S5-STD
Regular price $139.00Sale price $139.00 Regular priceUnit price per$195.25 -
ACL +002 O/S Subaru 4 EJ20/EJ22/EJ25 Race Series Engine Crankshaft Main Bearing Set | 5M8309HXO/S2-STD
Regular price $133.00Sale price $133.00 Regular priceUnit price per$133.00 -
ACL +005 O/S Subaru 4 EJ20/EJ22/EJ25 Race Series Engine Crankshaft Main Bearing Set | 5M8309HO/S5-STD
Regular price $142.00Sale price $142.00 Regular priceUnit price per$142.00 -
ACL +002 O/S Subaru 4 EJ20/EJ22/EJ25 Race Series Engine Crankshaft Main Bearing Set | 5M8309HO/S2-STD
Regular price $133.00Sale price $133.00 Regular priceUnit price per$133.00 -
Up to $4.99 offTorque Solution 02-07 WRX / 04-07 STi Small Battery Tie Down - Blue | TS-SU-613BU
Regular price $45.00Sale price $45.00 Regular priceUnit price per$49.99 -
IAG Performance Blemished EJ Competition Series Oil Pan | Black / Condition B09 | BLEM-ENG-2203BK-B09
Fits: 02-14 WRX, 04-21 STI, 05-09 LGT, 04-13 FXT
Regular price $599.99Sale price $599.99 Regular priceUnit price per$599.99 -
IAG Performance Blemished EJ Street Series Oil Pan | Black / Condition B07 | BLEM-ENG-2200BK-B07
Fits: 02-14 WRX, 04-21 STI, 05-09 LGT, 04-13 FXT
Regular price $479.99Sale price $479.99 Regular priceUnit price per$479.99 -
IAG Performance Blemished EJ Street Series Oil Pan | Black / Condition B09 | BLEM-ENG-2200BK-B09
Fits: 02-14 WRX, 04-21 STI, 05-09 LGT, 04-13 FXT
Regular price $499.99Sale price $499.99 Regular priceUnit price per$499.99 -
Wiseco EJ257 WRX/STI 4v Dish -19cc 100mm Piston Shelf Stock | 6598M100
Regular price $216.99Sale price $216.99 Regular priceUnit price per$216.99 -
GReddy 02-14 WRX / 04-21 STI / 05-12 LGT / 04-13 FXT Timing Belt | 13564500
Regular price $258.00Sale price $258.00 Regular priceUnit price per$258.00 -
IAG Performance Replacement V3 AOS 20" Coolant Line & Fitting
Fits: 02-14 WRX, 04-21 STI, 05-09 LGT
Regular price $49.99Sale price $49.99 Regular priceUnit price per$49.99 -
IAG Performance Crest CNC Stage X 2.5L Subaru Billet Aluminum Short Block
Fits: 02-14 WRX, 04-21 STi, 05-12 LGT, 04-13 FXT
Regular price $17,999.99Sale price $17,999.99 Regular priceUnit price per$17,999.99
