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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Blouch Performance 02-07 WRX/ 04-21 STI Dominator 1.5XT-R Ball Bearing Turbocharger | SUB-DOM1.5XT-R
Regular price From $1,815.00Sale price From $1,815.00 Regular priceUnit price per$0.00 -
Remark 15-21 WRX/STI (VA) R1 Spec Single-Exit Stainless Catback Exhaust (Resonated)
Regular price $1,095.00Sale price $1,095.00 Regular priceUnit price per$1,095.00 -
Kartboy 02-14 WRX / 04-21 STi / 04-13 Forester EJ Alternator Cover - Carbon Fiber
Regular price $185.00Sale price $185.00 Regular priceUnit price per$185.00 -
GrimmSpeed Intercooler Core - 2015-2021 WRX / STI | 090235
Regular price $1,171.00Sale price $1,171.00 Regular priceUnit price per$1,171.00 -
AeroflowDynamics AFD F1 Valved Catback Exhaust
Fits: 15-21 WRX/STI
Regular price From $1,999.99Sale price From $1,999.99 Regular priceUnit price per -
K&N 2019 WRX STI 2.5L F/I Replacement Air Filter | knn33-5092
Regular price $59.99Sale price $59.99 Regular priceUnit price per$59.99 -
![MRT [15 - 21 WRX/STI] MRT Extreme Cat Back for use with MRT J Pipe ONLY | 92P117 - JDMuscleCat Back Exhaust SystemMRT92P117](//jdmuscleusa.com/cdn/shop/files/mrt-15-21-wrxsti-mrt-extreme-cat-back-for-use-with-mrt-j-pipe-only-92p117-1443171.jpg?v=1770326714&width=220)
MRT MRT Extreme Cat Back for use with MRT J Pipe ONLY | 92P117
Fits: 15-21 WRX/STI
Regular price $1,751.99Sale price $1,751.99 Regular priceUnit price per$1,751.99 -
EOS 2004-21 WRX STi | 02-14 WRX Impreza T-304 Up-Pipe
Regular price $230.00Sale price $230.00 Regular priceUnit price per$199.98 -
P&L Motorsports CNC’d WRX/STI/BRZ Exhaust Head Flange | PL-CNC505
Regular price $109.95Sale price $109.95 Regular priceUnit price per$109.95 -
P&L Motorsports Subaru EJ Top Feed Fuel Rails
Regular price From $230.95Sale price From $230.95 Regular priceUnit price per$230.95 -
P&L Motorsports 15+ STI Front Mount Intercooler Kit - Rotated Location | PL-SUB211
Regular price $1,814.95Sale price $1,814.95 Regular priceUnit price per$1,814.95 -
P&L Motorsports Track Series Cat Back Exhaust
Fits: 15-21 WRX/STI
Regular price From $1,270.95Sale price From $1,270.95 Regular priceUnit price per$1,270.95 -
P&L Motorsports 08+ WRX/STI Pro Comp Turbo Kit
Regular price $5,545.00Sale price $5,545.00 Regular priceUnit price per$5,545.00 -
P&L Motorsports 08+ STI Front Mount Intercooler – Rotated Turbo
Regular price From $1,905.95Sale price From $1,905.95 Regular priceUnit price per$1,905.95 -
DELICIOUS TUNING 08-21 STI 3-PORT EBCS | DT_STI3_EBCS_V010
Regular price $156.00Sale price $156.00 Regular priceUnit price per$156.00 -
DELICIOUS TUNING 02-14 WRX / 04+ STI SET OF FOUR | 4 OEM+ COIL PACKS | YELLOW | DT_SUB1_COIL_R540
Regular price $495.00Sale price $495.00 Regular priceUnit price per$495.00
![MRT [15 - 21 WRX/STI] MRT Extreme Cat Back for use with MRT J Pipe ONLY | 92P117 - JDMuscleCat Back Exhaust SystemMRT92P117](http://jdmuscleusa.com/cdn/shop/files/mrt-15-21-wrxsti-mrt-extreme-cat-back-for-use-with-mrt-j-pipe-only-92p117-1443171.jpg?v=1770326714&width=220)
