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Perrin 02-14 WRX / 04-21 STI Belt Cover Hyper Pink | PSP-ENG-150HP
Regular price $65.88Regular priceUnit price per$113.00Sale price $65.88Sale -
IAG Performance / ARP 14mm Head Stud Set Most Subaru Models | IAG-ENG-1711
Regular price $579.99Regular priceUnit price per$579.99Sale price $579.99 -
IAG Garret GT Series Turbo Oil Feed Line & AVCS Line for Subaru Multiple Fitments | IAG-ENG-2072
Regular price From $129.99Regular priceUnit price per$129.99Sale price From $129.99 -
IAG Performance 02-14 WRX / 04-21 STI / 05-09 LGT / 04-13 FXT V2 Oil Pickup | IAG-ENG-2082
Regular price $139.99Regular priceUnit price per$139.99Sale price $139.99 -
IAG V2 Alternator Relocation Kit for Reversed Intake Manifold for Multiple Subaru Fitments | IAG-ENG-5211
Regular price $209.99Regular priceUnit price per$209.99Sale price $209.99 -
IAG AOS Street to Competition Series Conversion Kit for 2006-2014 Subaru WRX and 2004-21 Subaru WRX STI | IAG-ENG-7210
Regular price $89.99Regular priceUnit price per$89.99Sale price $89.99 -
IAG 02-14 WRX / 04-21 STI / 05-09 LGT / 04-08 FXT V2 Timing Belt Guide | IAG-ENG-5101BK
Regular price $54.99Regular priceUnit price per$54.99Sale price $54.99 -
IAG 06-07 WRX / 04-07 STI V3 Street Series Air/Oil Separator | IAG-ENG-7180
Regular price $439.99Regular priceUnit price per$439.99Sale price $439.99 -
Perrin Hardware for Subaru Pulley Cover | S-PSP-ENG-150
Regular price $27.88Regular priceUnit price per$40.00Sale price $27.88Sale -
Perrin 02-07 WRX / 04-21 STI / 04-08 FXT Turbo Inlet Replacement Nylon Coupler | X-PSP-INT-404
Regular price $21.88Regular priceUnit price per$33.00Sale price $21.88Sale -
COBB Delrin Oil Cap Most Subaru Models | 800515
Regular price $85.00Regular priceUnit price per$85.00Sale price $85.00 -
COBB Oil Filler Cap Black Most Subaru Models | 800510-BK
Regular price $85.00Regular priceUnit price per$85.00Sale price $85.00 -
Turbosmart 02-07 WRX / 04-21 STI / 06-08 FXT Dual Port Blow Off Valve Black | TS-0205-1016
Regular price $354.95Regular priceUnit price per$394.39Sale price $354.95Sale -
MAPerformance 4-1 Equal Length Header Subaru STI 2004-2020 | SUB-ELH-REV2-PARENT
Regular price From $1,349.99Regular priceUnit price per$1,349.99Sale price From $1,349.99 -
Cobb Stainless Steel 3-inch Cat Back Exhaust Subaru WRX 2002-2007 / STI 2002-2007 | 512100
Regular price $825.00Regular priceUnit price per$825.00Sale price $825.00 -
Moroso Aluminum Coolant Expansion Tank Subaru WRX 2002-2007/ STI 2004-2007 / Forester XT 2004-2008 | 63784
Regular price $199.99Regular priceUnit price per$231.46Sale price $199.99Sale
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.