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 02-14 WRX, 04-21 STI, 05-09 LGT, 04-13 FXT 750 CNC Pocket Ported Competition Cylinder Heads Package | IAG-ENG-H750NL
Only 1 leftRegular price $6,199.99Sale price $6,199.99 Regular priceUnit price per$6,199.99 -
In StockIAG 02-14 WRX, 04-21 STI, 05-09 LGT, 04-13 FXT 750 CNC Pocket Ported Competition Cylinder Heads Package | IAG-ENG-H750VL
Only 1 leftRegular price $6,199.99Sale price $6,199.99 Regular priceUnit price per$6,199.99 -
In StockIAG 02-14 WRX, 04-21 STI, 05-09 LGT, 04-13 FXT 750 CNC Pocket Ported Competition Cylinder Heads Package | IAG-ENG-H750DL
Only 1 leftRegular price $6,199.99Sale price $6,199.99 Regular priceUnit price per$6,199.99 -
In StockIAG 02-14 WRX, 04-21 STI, 05-09 LGT, 04-13 FXT 750 CNC Pocket Ported Competition Cylinder Heads Package | IAG-ENG-H750SL
Only 1 leftRegular price $6,199.99Sale price $6,199.99 Regular priceUnit price per$6,199.99 -
In StockIAG 02-14 WRX, 04-21 STI, 05-09 LGT, 04-13 FXT 750 CNC Pocket Ported Competition Cylinder Heads Package | IAG-ENG-H750SCL
Only 1 leftRegular price $6,399.99Sale price $6,399.99 Regular priceUnit price per$6,399.99 -
In StockIAG 02-14 WRX, 04-21 STI, 05-09 LGT, 04-13 FXT 950 CNC Ported Race Cylinder Heads Package | IAG-ENG-H950WE
Only 1 leftRegular price $4,999.99Sale price $4,999.99 Regular priceUnit price per$4,999.99 -
In StockIAG 02-14 WRX, 04-21 STI, 05-09 LGT, 04-13 FXT 950 CNC Ported Race Cylinder Heads Package | IAG-ENG-H950NE
Only 1 leftRegular price $4,999.99Sale price $4,999.99 Regular priceUnit price per$4,999.99 -
In StockIAG 02-14 WRX, 04-21 STI, 05-09 LGT, 04-13 FXT 950 CNC Ported Race Cylinder Heads Package | IAG-ENG-H950VE
Only 1 leftRegular price $4,999.99Sale price $4,999.99 Regular priceUnit price per$4,999.99 -
In StockIAG 02-14 WRX, 04-21 STI, 05-09 LGT, 04-13 FXT 950 CNC Ported Race Cylinder Heads Package | IAG-ENG-H950DE
Only 1 leftRegular price $4,999.99Sale price $4,999.99 Regular priceUnit price per$4,999.99 -
In StockIAG 02-14 WRX, 04-21 STI, 05-09 LGT, 04-13 FXT 950 CNC Ported Race Cylinder Heads Package | IAG-ENG-H950SE
Only 1 leftRegular price $4,999.99Sale price $4,999.99 Regular priceUnit price per$4,999.99 -
In StockIAG 02-14 WRX, 04-21 STI, 05-09 LGT, 04-13 FXT 950 CNC Ported Race Cylinder Heads Package | IAG-ENG-H950SCE
Only 1 leftRegular price $5,249.99Sale price $5,249.99 Regular priceUnit price per$5,249.99 -
In StockIAG 02-14 WRX/04-21 STI/05-09 LGT/04-13 FXT 950 CNC Ported Race Cylinder Heads Package | IAG-ENG-H950WL
Only 1 leftRegular price $6,799.99Sale price $6,799.99 Regular priceUnit price per$6,799.99 -
In StockIAG 02-14 WRX, 04-21 STI, 05-09 LGT, 04-13 FXT 950 CNC Ported Race Cylinder Heads Package | IAG-ENG-H950NL
Only 1 leftRegular price $6,799.99Sale price $6,799.99 Regular priceUnit price per$6,799.99 -
In StockIAG 02-14 WRX/04-21 STI/05-09 LGT/04-13 FXT 950 CNC Ported Race Cylinder Heads Package | IAG-ENG-H950VL
Only 1 leftRegular price $6,799.99Sale price $6,799.99 Regular priceUnit price per$6,799.99 -
In StockIAG 02-14 WRX, 04-21 STI, 05-09 LGT, 04-13 FXT 950 CNC Ported Race Cylinder Heads Package | IAG-ENG-H950DL
Only 1 leftRegular price $6,799.99Sale price $6,799.99 Regular priceUnit price per$6,799.99 -
In StockIAG 02-14 WRX/04-21 STI/05-09 LGT/04-13 FXT 950 CNC Ported Race Cylinder Heads Package | IAG-ENG-H950SL
Only 1 leftRegular price $6,799.99Sale price $6,799.99 Regular priceUnit price per$6,799.99
