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 $20 offBLOX Purple Racing Manual Boost Controller - Universal
Regular price $80.00Sale price $80.00 Regular priceUnit price per$100.00 -
Up to $21 offBLOX Red Racing Manual Boost Controller - Universal
Regular price $84.00Sale price $84.00 Regular priceUnit price per$105.00 -
Up to $20 offBLOX Blue Racing Manual Boost Controller - Universal
Regular price $80.00Sale price $80.00 Regular priceUnit price per$100.00 -
Up to $4 offBlox Racing T3 Turbo Discharge Flange, 1018 Mild Steel - Universal
Regular price $16.00Sale price $16.00 Regular priceUnit price per$20.00 -
Up to $4.60 offBlox Racing T25 Turbo Inlet Flange, 1018 Mild Steel - Universal
Regular price $18.40Sale price $18.40 Regular priceUnit price per$23.00 -
Up to $5 offBlox Racing T3 Divided Turbo Inlet Flange, 1018 Mild Steel - Universal
Regular price $20.00Sale price $20.00 Regular priceUnit price per$25.00 -
Up to $5 offBlox Racing T3 Turbo Inlet Flange, 1018 Mild Steel - Universal
Regular price $20.00Sale price $20.00 Regular priceUnit price per$25.00 -
Up to $5 offBlox Racing T4 Turbo Inlet Flange, 1018 Mild Steel - Universal
Regular price $20.00Sale price $20.00 Regular priceUnit price per$25.00 -
Up to $6.40 offBlox Racing T3/T4 Divided Turbo Inlet Flange, 1018 Mild Steel - Universal
Regular price $25.60Sale price $25.60 Regular priceUnit price per$32.00 -
Up to $3 off
In StockBlox Racing TiAL/Deltagate 38mm Weld-On Wastegate Flange, 1018 Mild Steel - Universal
Only 2 leftRegular price $12.00Sale price $12.00 Regular priceUnit price per$15.00 -
Up to $21.50 off
In StockGReddy PRofec Electronic Boost Controller - Universal | 15500214
Only 18 leftRegular price $408.50Sale price $408.50 Regular priceUnit price per$430.00 -
GReddy Type FV Blow Off Valve Kit Subaru STI 2008-2019 | 11561210
Regular price $443.00Sale price $443.00 Regular priceUnit price per$443.00 -
Up to $4.21 off
In StockTorque Solution Tial Blow off Valve Adapter WRX 2002-2007 / STI 2004-21 | TS-SU-TIAL
Only 5 leftRegular price $38.00Sale price $38.00 Regular priceUnit price per$42.21 -
Up to $3.10 offTorque Solution Stainless Steel Blow Off Valve Flange Tial Q & Q-R - Universal
Regular price $38.00Sale price $38.00 Regular priceUnit price per$41.10 -
Up to $2.65 off
In StockTorque Solution Aluminum Blow Off Valve Flange Tial Q & Q-R - Universal
Only 3 leftRegular price $34.00Sale price $34.00 Regular priceUnit price per$36.65 -
Up to $4.21 off
In StockTorque Solution Greddy Blow Off Valve Adapter WRX 2002-2007 / STI 2004-2019
Only 1 leftRegular price $38.00Sale price $38.00 Regular priceUnit price per$42.21
