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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In StockTurbo XS Donut Gasket with 76mm/3 inch I.D. - Universal | WS-HW-DONUT
Regular price $20.00Sale price $20.00 Regular priceUnit price per$20.00 -
Up to $44 off
In StockAEM Ethanol Content Flex Fuel Sensor w/ -6AN fittings Kit - Universal | 30-2201
Only 4 leftRegular price $349.95Sale price $349.95 Regular priceUnit price per$393.95 -
In StockDeatschwerks 2200cc Bosch EV14 Fuel Injectors 2002-2014 WRX / 2007-2012 Legacy GT / 2007-2019 STI / Outback XT 2007-2009
Only 1 leftRegular price $859.00Sale price $859.00 Regular priceUnit price per$859.00 -
In StockDeatschwerks 50 lb | 550 cc 4 Set Compact Fuel Injectors - Universal
Only 4 leftRegular price $269.00Sale price $269.00 Regular priceUnit price per$269.00 -
Deatschwerks 50 lb | 550 cc 4 Set Standard Fuel Injectors - Universal
Regular price $369.00Sale price $369.00 Regular priceUnit price per$369.00 -
Deatschwerks 60 lb | 650 cc 4 Set Standard Fuel Injectors - Universal
Regular price $389.00Sale price $389.00 Regular priceUnit price per$389.00 -
In StockDeatschwerks 60lb | 650cc 4 Set Long Fuel Injectors - Universal
Only 5 leftRegular price $299.00Sale price $299.00 Regular priceUnit price per$299.00 -
In StockDeatschwerks 78lb | 800cc 4 Set Long Fuel Injectors - Universal
Only 3 leftRegular price $299.00Sale price $299.00 Regular priceUnit price per$299.00 -
In StockDeatschWerks DW300c Fuel Pump w/ Install Kit WRX 2008-2014 / STI 2008-2019 / Legacy GT 2005-2009 / Outback XT 2005-2009
Regular price $189.00Sale price $189.00 Regular priceUnit price per$189.00 -
In StockDeatschWerks DWR1000 Adjustable Fuel Pressure Regulator - Black - Universal
Regular price $169.00Sale price $169.00 Regular priceUnit price per$169.00 -
In StockDeatschWerks DWR1000 Adjustable Fuel Pressure Regulator - Titanium - Universal
Regular price $169.00Sale price $169.00 Regular priceUnit price per$169.00 -
In StockDeatschWerks Fuel Injectors 1200cc w/ Top Feed Fuel Rails
Fits: 02-14 WRX, 07-19 STI, 07-12 LGT
Only 1 leftRegular price $699.00Sale price $699.00 Regular priceUnit price per$699.00 -
Walbro Fuel Pump Install Kit - Universal
Regular price $16.50Sale price $16.50 Regular priceUnit price per$0.00 -
In StockWalbro GSS341G3 Intank Fuel Pump 255LPH High Pressure - Universal
Regular price $76.00Sale price $76.00 Regular priceUnit price per$76.00 -
Up to $21.99 offTurbosmart FPR-1200 -6AN Adjustable Fuel Pressure Regulator - Universal
Regular price From $188.95Sale price From $188.95 Regular priceUnit price per$209.94 -
In StockInjector Dynamics 1340cc Fuel Injectors WRX 2002-2014 / STI 2007-2019
Only 17 leftRegular price $1,039.50Sale price $1,039.50 Regular priceUnit price per$1,039.50
