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Perrin Crank Pulley W/o AC Only Red For Ej Engines Subaru WRX 2002-2014/ Outback 1995-2009/ Outback XT 2005-2009 / Forester 2003-2010/ Forester XT 2003-2013 /Legacy 1994-2009 / STI 2004-21/ Impreza 1993-2011 | PSP-ENG-102RD
Regular price $77.88Regular priceUnit price per$135.00Sale price $77.88Sale -
Subaru Oil Cap Gasket Ascent 2019-2022 / Baja 2002-2006 / BRZ 2013-2022 / Crosstrek 2013-2022 / Forester 1998-2022 / Impreza 1993-2022 / Justy 1988-1994 / Legacy 1990-2002 / Outback 2005-2022 / STI 2004-21 / WRX 2002-2022 | 803942020
Regular price $10.66Regular priceUnit price per$10.66Sale price $10.66 -
Subaru OEM Valve Cover Left Baja 2004-2006 / Forester 2004-2013 / Impreza 2004-2010 / Legacy 2005-2012 / Outback 2005-2009 / STI 2004-21 / WRX 2006-21 | 13278AA320
Regular price $127.66Regular priceUnit price per$127.66Sale price $127.66 -
Subaru OEM Valve Cover Left Baja 2004-2006 / Forester 2004-2013 / Impreza 2004-2010 / Legacy 2005-2009 / Outback 2005-2009 / STI 2004-21 / WRX 2006-21 | 13264AA400
Regular price $127.66Regular priceUnit price per$127.66Sale price $127.66 -
GrimmSpeed Post MAF Hose Kit Red Subaru WRX 2002-2007 / STI 2002-2007 | 125010
Regular price $80.00Regular priceUnit price per$80.00Sale price $80.00 -
Grimmspeed Turbocharger Replacement Oil Line Kit EJ Models | 123000
Regular price $80.00Regular priceUnit price per$80.00Sale price $80.00 -
Perrin 15-21 Subaru WRX Oil Cooler Kit w/PERRIN Core | PSP-OIL-111
Regular price $638.88Regular priceUnit price per$925.00Sale price $638.88Sale -
Grimmspeed 02-07 WRX / 04-21 STI CHASE JB400 Turbocharger Kit | 123005
Regular price $1,350.00Regular priceUnit price per$1,350.00Sale price $1,350.00 -
Grimmspeed 02-07 WRX / 04-21 STI OVERTAKE BB500 Turbocharger Kit | 123006
Regular price $1,650.00Regular priceUnit price per$1,650.00Sale price $1,650.00 -
Tomei ARMS BX7760 Turbo Saab 9-2X 2005-2006 / Subaru Baja 2005-2006 / Forester 2004-2008 / Impreza WRX 2002-2007 / Impreza STI 2004-2007 / WRX STI 15-21 | TB403A-SB01A
Regular price $1,602.00Regular priceUnit price per$1,780.00Sale price $1,602.00Sale -
Perrin 19-21 Subaru WRX STI Panel Filter | PSP-INT-114
Regular price $43.88Regular priceUnit price per$76.00Sale price $43.88Sale -
Perrin Crank Pulley W/o AC Only Blue For Ej Engines Subaru WRX 2002-2014/ Outback 1995-2009/ Outback XT 2005-2009 / Forester 2003-2010/ Forester XT 2003-2013 /Legacy 1994-2009 / STI 2004-21/ Impreza 1993-2011 | PSP-ENG-102BL
Regular price $77.88Regular priceUnit price per$135.00Sale price $77.88Sale -
FactionFab 02-07 WRX / 04-07 STI MAF Sensor Replacement O ring | 1.10117.1
Regular price $6.88Regular priceUnit price per$7.00Sale price $6.88Sale -
Injen SP Cold Air Intake Polished Subaru Impreza WRX STI 2004-2007 / Impreza WRX 2004-2007 | SP1202P
Regular price $306.36Regular priceUnit price per$306.36Sale price $306.36 -
Perrin Drop In Panel Filter Subaru WRX 2002-2007 / STI 2002-2007 | PSP-INT-100
Regular price $38.88Regular priceUnit price per$67.00Sale price $38.88Sale -
Killer B Performance Hardened Uppipe Studs Subaru WRX/STI (All Turbo Models) | STS
Regular price $32.00Regular priceUnit price per$32.00Sale price $32.00
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.