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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Deatschwerks P1-P2 Sidefeed Injector Adapter Kit 4 cyl - Universal
Regular price $99.00Sale price $99.00 Regular priceUnit price per$99.00 -
Deatschwerks P1-P2 Sidefeed Injector Adapter Kit 8 cyl - Universal
Regular price $229.00Sale price $229.00 Regular priceUnit price per$229.00 -
In StockDeatschwerks DWR2000 Adjustable Fuel Pressure Regulator - Black - Universal
Only 13 leftRegular price $169.00Sale price $169.00 Regular priceUnit price per$169.00 -
In StockDeatschwerks DWR2000 Adjustable Fuel Pressure Regulator - Titanium - Universal
Only 4 leftRegular price $169.00Sale price $169.00 Regular priceUnit price per$169.00 -
In StockDeatschWerks DW400 In-Tank Fuel Pump w/ Set Up Kit - Universal
Only 20 leftRegular price $239.00Sale price $239.00 Regular priceUnit price per$239.00 -
In StockDeatschWerks Fuel Injectors 1000cc w/ Top Feed Fuel Rails WRX 2002-2014 / STI 2007-2019 / Legacy GT 2007-2012
Only 5 leftRegular price $619.00Sale price $619.00 Regular priceUnit price per$619.00 -
In StockDeatschwerks Sumitomo Re-pin Connector for Fuel Injector - Universal
Only 2 leftRegular price $7.00Sale price $7.00 Regular priceUnit price per$7.00 -
In StockDeatschwerks 88lb | 900cc 4 Set Long Fuel Injectors - Universal
Only 1 leftRegular price $329.00Sale price $329.00 Regular priceUnit price per$329.00 -
In StockDeatschwerks Fuel Pump Hardwire Installation Kit - Universal
Regular price $59.00Sale price $59.00 Regular priceUnit price per$59.00 -
In StockDeatschWerks Bosch EV14 1200cc Injectors Set 2002-2014 WRX / 2007-2019 STI / 2007-2012 Legacy GT / Outback XT 2007-2009
Only 4 leftRegular price $569.00Sale price $569.00 Regular priceUnit price per$569.00 -
DeatschWerks DW350iL In-Line External Fuel Pump w/ Mounting Brackets - Universal
Regular price $219.00Sale price $219.00 Regular priceUnit price per$219.00 -
Bosch Inline Electric Fuel Pump - Universal
Regular price $159.99Sale price $159.99 Regular priceUnit price per$0.00 -
Up to $8.10 off
In StockTorque Solution 02-14 WRX / 04-21 STI 2.5i Fuel Rail Adapters | TS-SU-308
Only 1 leftRegular price $53.00Sale price $53.00 Regular priceUnit price per$61.10 -
In StockWalbro 400LPH Fuel Pump - Universal
Regular price $122.00Sale price $122.00 Regular priceUnit price per$122.00 -
Walbro Fuel Filter + Wiring Harness Installation Kit for F90000267 E85 Pump- Universal
Regular price $22.80Sale price $22.80 Regular priceUnit price per$0.00 -
Walbro Installation Kit for F90000267 E85 Fuel Pump - Universal
Regular price $24.00Sale price $24.00 Regular priceUnit price per$0.00
