Collection: Engine Upgrades For Subaru WRX S4 VA
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COBB AccessPORT V3 ECU Tuner | Subaru WRX/STI (15-21) / Forester XT CVT (14-18) (AP3-SUB-004)
Vendor:COBBRegular price $770.00 USDRegular priceUnit price / per$770.00 USDSale price $770.00 USD -
Perrin Pitch Stop Mount | Subaru WRX/WRX STI/Legacy GT (15-20) (PSP-DRV-101BL)
Vendor:Perrin PerformanceRegular price $87.75 USDRegular priceUnit price / per$117.00 USDSale price $87.75 USDSale -
Torque Solution Steering Rack Brace | 2008-2021 Subaru WRX/STI (TS-SU-388)
Vendor:Torque SolutionRegular price $54.89 USDRegular priceUnit price / per$66.65 USDSale price $54.89 USDSale -
Turbo XS Hella Horn Wiring Harness | Subaru WRX (15-21) (WS15-HHWH)
Vendor:Turbo XSRegular price $35.49 USDRegular priceUnit price / per$48.00 USDSale price $35.49 USDSale -
COBB NexGen Stage 2 + CAN Flex Fuel Power Package w/SF Intake Black Intercooler | Subaru WRX 6MT (18-21) (SUB004NG2W2-BK2FF)
Vendor:COBBRegular price $3,900.00 USDRegular priceUnit price / per$3,900.00 USDSale price $3,900.00 USD -
COBB NexGen Stage 2 Power Package w/SF Intake & Silver Intercooler | Subaru WRX (15-21) (SUB004NG2W2-SL)
Vendor:COBBRegular price $2,565.00 USDRegular priceUnit price / per$2,565.00 USDSale price $2,565.00 USD -
Perrin Alternator Pulley - Blue | 2007-2021 Subaru WRX STI (PSP-ENG-119BL)
Vendor:Perrin PerformanceRegular price $45.75 USDRegular priceUnit price / per$61.00 USDSale price $45.75 USDSale -
Perrin Alternator Pulley - Black | 2007-2021 Subaru WRX STI (PSP-ENG-119BK)
Vendor:Perrin PerformanceRegular price $45.75 USDRegular priceUnit price / per$61.00 USDSale price $45.75 USDSale -
Torque Solution Fuel Line Disconnect Tool | Multiple Subaru Fitments (TS-TL-706)
Vendor:Torque SolutionRegular price $12.26 USDRegular priceUnit price / per$14.88 USDSale price $12.26 USDSale -
PERRIN 15-21 Subaru WRX/STI Front Mount Intercooler Core + Mounting Beam - Silver Core
Vendor:Perrin PerformanceRegular price $1,058.25 USDRegular priceUnit price / per$1,411.00 USDSale price $1,058.25 USDSale -
Torque Solution Engine Pulley Covers |2015-2021 Subaru WRX (TS-SU-289R)
Vendor:Torque SolutionRegular price $82.34 USDRegular priceUnit price / per$99.99 USDSale price $82.34 USDSale -
Torque Solution Engine Mounts with Mount Plates | 2006-2015 Subaru WRX/STI (TS-SU-200-PL)
Vendor:Torque SolutionRegular price $320.26 USDRegular priceUnit price / per$388.88 USDSale price $320.26 USDSale -
HKS SSQV4 Black Recirculation BOV Kit | Subaru WRX FA20 (15-21) (71008-KF015B)
Vendor:HKSRegular price $404.80 USDRegular priceUnit price / per$404.80 USDSale price $404.80 USD -
GSC Power Division GSC Exhaust Valve Sets -STD | 2015 - 2021 Subaru FA20F WRX (B2281-50)
Vendor:GSC Power DivisionRegular price $1,055.77 USDRegular priceUnit price / per$1,242.08 USDSale price $1,055.77 USDSale -
GSC Power Division GSC Intake Valve Sets -STD | 2015 - 2021 Subaru FA20F WRX (B2282-50)
Vendor:GSC Power DivisionRegular price $1,048.15 USDRegular priceUnit price / per$1,233.12 USDSale price $1,048.15 USDSale -
HKS Turbo Timer Harness Type FT-6 | Subaru WRX/STI (08-14) (41003-AF006)
Vendor:HKSRegular price $30.00 USDRegular priceUnit price / per$30.00 USDSale price $30.00 USD -
Cometic 89.5mm MLX Head Gasket | Subaru WRX FA20DIT (15-19) (C4955-032)
Vendor:Cometic GasketRegular price $72.12 USDRegular priceUnit price / per$85.13 USDSale price $72.12 USDSale -

Cometic Subaru 15-19 WRX FA20DIT 89.5mm Bore .032in MLX Head Gasket | Subaru WRX (C4954-032)
Vendor:Cometic GasketRegular price $72.12 USDRegular priceUnit price / per$85.13 USDSale price $72.12 USDSale -
COBB 2.5"-2.75" Aluminum Charge Pipe | Subaru WRX/Ascent/Outback XT/Legacy XT (22-25/19-25/20-25) (746110)
Vendor:COBBRegular price $305.00 USDRegular priceUnit price / per$305.00 USDSale price $305.00 USD -
Mishimoto Charge-Pipe Kit | 2015+ Subaru WRX (MMICP-WRX-15)
Vendor:MishimotoRegular price $319.95 USDRegular priceUnit price / per$352.00 USDSale price $319.95 USDSale
Engine Upgrades for Subaru WRX S4 VA: Boost Power and Performance
Unlock the full potential of your Subaru WRX S4 VA with engine upgrades designed specifically for this model. Our collection focuses on enhancing power delivery, throttle response, and engine efficiency to elevate your driving experience. Whether you want to increase horsepower, improve reliability, or refine your exhaust note, these parts deliver targeted performance gains.
What are the benefits of upgrading your Subaru WRX S4 VA’s engine components?
Upgrading key engine components can significantly improve your WRX S4 VA’s responsiveness and overall power output. Performance intakes and exhausts optimize airflow, while tuning accessories help your engine run more efficiently under load. These upgrades also contribute to a more engaging driving experience by sharpening throttle response and enhancing engine sound.
- Improved air intake and exhaust flow for better combustion
- Enhanced throttle response and smoother power delivery
- Increased engine efficiency and potential for higher output
- Refined engine sound tailored to your preferences
How to choose the right engine upgrades for your Subaru WRX S4 VA?
Selecting the right parts depends on your performance goals and daily driving needs. Consider whether you want to focus on power gains, reliability, or sound enhancement. Intake and exhaust components are common starting points, while tuning accessories allow for precise engine management. Always ensure parts are designed for the WRX S4 VA platform to guarantee fitment and compatibility.
Supporting modifications and where to shop Subaru WRX S4 VA engine upgrades
Supporting modifications such as upgraded intercoolers, blow-off valves, and catch cans can complement your engine upgrades by improving cooling and reliability. Proper installation and tuning are essential to maximize benefits. Explore our curated selection of engine upgrades for the Subaru WRX S4 VA at WheelFlip to find quality aftermarket parts with fitment confidence and expert support.












