Optimize your Subaru STI 2015-2021 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.
2015-2021 Subaru WRX STI Engine Parts
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Up to $38.21 off
In StockTorque Solution Top Feed Fuel Rails Blue WRX 2002-2014 / STI 2007-2020 / Legacy GT 2008-2012 / Forester XT 2006-2013 | TS-SU-400BU.2
Only 1 leftRegular price $184.00Sale price $184.00 Regular priceUnit price per$222.21 -
Up to $8.43 off
In StockTorque Solution HD Cam Bolt Kit for Dual AVCS Subaru STI EJ25 2008-2020 | TS-SU-626-4
Only 3 leftRegular price $56.00Sale price $56.00 Regular priceUnit price per$64.43 -
Up to $43.99 off
In StockTorque Solution V2 Reversed Intake Manifold Alternator Relocation Kit WRX 2002-2014 / STI 2004-21 | TS-SU-440
Only 2 leftRegular price $206.00Sale price $206.00 Regular priceUnit price per$249.99 -
Brian Crower Stroker Kit 83mm Billet Crank/ProH625+ Rods 5.141in Custom Pistons Subaru EJ257 STI 2004-2017 | BC0628
Regular price $4,029.00Sale price $4,029.00 Regular priceUnit price per$4,029.00 -
HKS 04-21 STI Fuel Upgrade Kit | 14007-AF003
Regular price $1,187.00Sale price $1,187.00 Regular priceUnit price per$1,187.00 -
Moroso 02-14 WRX / 04-21 STI Steel Oil Pan and Oil Pick Up Combo | 20966
Regular price $580.99Sale price $580.99 Regular priceUnit price per$580.99 -
Moroso 02-14 WRX / 04-21 STI Aluminum Oil Pan and Oil Pick Up Combo | 20968
Regular price $1,011.99Sale price $1,011.99 Regular priceUnit price per$1,011.99 -
Moroso Oil Pickup Tube for OEM Pans Subaru EJ25 Turbo WRX 2006-2014 / STI 2004-2014 | 24965
Regular price $141.99Sale price $141.99 Regular priceUnit price per$141.99 -
Subaru Valve Lifter Baja 2004-2006 / Forester 2009-2013 / Impreza 2003-2010 / Legacy 2005-2012 / Outback 2005-2009 / STI 2006-21 / WRX 2003-21 | 13228AB412
Regular price $31.66Sale price $31.66 Regular priceUnit price per$31.66 -
Subaru Valve Lifter Baja 2004-2006 / Forester 2009-2013 / Impreza 2003-2010 / Legacy 2005-2012 / Outback 2005-2009 / STI 2006-21 / WRX 2003-21 | 13228AB482
Regular price $31.66Sale price $31.66 Regular priceUnit price per$31.66 -
Subaru Valve Lifter Baja 2004-2006 / Forester 2004-2013 / Impreza 2003-2010 / Legacy 2005-2012 / Outback 2005-2009 / STI 2004-21 / WRX 2003-21 | 13228AB472
Regular price $31.66Sale price $31.66 Regular priceUnit price per$31.66 -
Subaru Valve Lifter Baja 2004-2006 / Forester 2009-2013 / Impreza 2003-2010 / Legacy 2005-2012 / Outback 2005-2009 / STI 2006-21 / WRX 2003-21 | 13228AB452
Regular price $31.66Sale price $31.66 Regular priceUnit price per$31.66 -
Subaru Valve Lifter Baja 2004-2006 / Forester 2009-2013 / Impreza 2003-2010 / Legacy 2005-2012 / Outback 2005-2009 / STI 2006-21 / WRX 2003-21 | 13228AB442
Regular price $31.66Sale price $31.66 Regular priceUnit price per$31.66 -
Subaru Valve Lifter Baja 2004-2006 / Forester 2009-2013 / Impreza 2003-2010 / Legacy 2005-2012 / Outback 2005-2009 / STI 2006-21 / WRX 2003-21 | 13228AB462
Regular price $31.66Sale price $31.66 Regular priceUnit price per$31.66 -
Subaru Valve Lifter Baja 2004-2006 / Forester 2009-2013 / Impreza 2003-2010 / Legacy 2005-2012 / Outback 2005-2009 / STI 2006-21 / WRX 2003-21 | 13228AB432
Regular price $31.66Sale price $31.66 Regular priceUnit price per$31.66 -
Subaru Valve Lifter Baja 2004-2006 / Forester 2004-2013 / Impreza 2003-2010 / Legacy 2005-2012 / Outback 2005-2009 / STI 2004-21 / WRX 2003-21 | 13228AB362
Regular price $31.66Sale price $31.66 Regular priceUnit price per$31.66
