My Garage
Cart

Genuine Subaru WRX Thermostat

Engine Coolant Thermostat
  • Select Vehicle by Model
  • Select Vehicle by VIN
Select Vehicle by Model
Make
Model
Year
or
Select Vehicle by VIN
For the most accurate results, select vehicle by your VIN (Vehicle Identification Number).

6 Thermostats found

  • Diagram for Subaru WRX Thermostat - 21210AA030
    View related parts

    Subaru WRX THERMOSTAT Gasket Assembly

    Part Number: 21210AA030
    $19.67 MSRP: $28.50
    You Save: $8.83 (31%)
    ADD TO CART
    Product Specifications
    • Other Name: Thermo And Gasket Assembly; Repair Kit, Thermostat, Thermostat Unit
    • Warranty: This genuine part is guaranteed by Subaru's factory warranty.
    Fits the following Vehicles:
    • 2015-2020 Subaru WRX | Base, Limited, Premium, S209, Type RA | 2.5L H4 Turbo
  • Diagram for Subaru WRX Thermostat - 21200AA072
    View related parts

    Subaru WRX Thermostat

    Part Number: 21200AA072
    $22.60 MSRP: $32.75
    You Save: $10.15 (31%)
    Ships in 1-3 Business Days
    ADD TO CART
    Product Specifications
    • Other Name: Thermo Assembly
    • Replaces: 21200AA071, 21200AA070
    • Warranty: This genuine part is guaranteed by Subaru's factory warranty.
    Fits the following Vehicles:
    • 2015-2020 Subaru WRX | Base, Limited, Premium, S209, Type RA | 2.5L H4 Turbo
  • Diagram for Subaru WRX Thermostat - 21210AA221
    View related parts

    Subaru WRX THERMO And Gasket Assembly

    Part Number: 21210AA221
    $27.21 MSRP: $39.43
    You Save: $12.22 (31%)
    Ships in 1-2 Business Days
    ADD TO CART
    Product Specifications
    • Other Name: Thermostat
    • Replaces: 21210AA220
    • Warranty: This genuine part is guaranteed by Subaru's factory warranty.
    Fits the following Vehicles:
    • 2015-2020 Subaru WRX | Base, Limited, Premium | 2.0L H4
  • Diagram for Subaru WRX Thermostat - 73540FG011
    View related parts

    Subaru WRX THMS THERMO Assembly

    Part Number: 73540FG011
    $39.79 MSRP: $57.67
    You Save: $17.88 (31%)
    Ships in 1-3 Business Days
    ADD TO CART
    Product Specifications
    • Other Name: Thermostat-Cooling; Refrigerant Temp Sensor, Temp Sensor
    • Replaces: 73540FG010
    • Warranty: This genuine part is guaranteed by Subaru's factory warranty.
    Fits the following Vehicles:
    • 2015-2020 Subaru WRX | Base, Limited, Premium, S209, Type RA | 2.0L H4, 2.5L H4 Turbo
  • Subaru WRX Thermostat - 21210AA291
    Diagram for Subaru WRX Thermostat - 21210AA291
    View related parts

    Subaru WRX THERMO & GSKT AY

    Part Number: 21210AA291
    $27.21 MSRP: $39.43
    You Save: $12.22 (31%)
    Ships in 1-2 Business Days
    ADD TO CART
    Product Specifications
    • Replaces: 21210AA290
    • Warranty: This genuine part is guaranteed by Subaru's factory warranty.
    Fits the following Vehicles:
    • 2022-2025 Subaru WRX | 4 Cyl 2.4L CVT
  • Subaru WRX Thermostat - 73540FL000
    Diagram for Subaru WRX Thermostat - 73540FL000
    View related parts

    Subaru WRX THERMISTOR THERMO Ay

    Part Number: 73540FL000
    $39.79 MSRP: $57.67
    You Save: $17.88 (31%)
    Ships in 1-3 Business Days
    ADD TO CART
    Product Specifications
    • Warranty: This genuine part is guaranteed by Subaru's factory warranty.
    Fits the following Vehicles:
    • 2022-2025 Subaru WRX | 4 Cyl 2.4L 6MT, 4 Cyl 2.4L CVT

Subaru WRX Thermostat

Subaru WRX Thermostat protects the powertrain by sustaining coolant flow. So, engine heat remains in the sweet spot for longevity and power. This durable Thermostat sits between the block and radiator and stays closed for cold starts. Subsequently, it opens quickly once target temperature is reached. The wax pellet core expands with increasing heat, forcing a plunger that operates on the valve with split second accuracy, a simple design that gives excellent reliability. By cycling on command, the Thermostat modulates combustion, alleviates thermal shock, and feeds the heater core with warmed coolant, providing drivers with steady cabin comfort on chilly mornings. Every Subaru WRX from first-generation sedans to today's performance editions relies on this Thermostat to prevent overcooling while the turbo is spooled and to prevent overheating when at red line pulls. This single proven part will perform across all WRX years from the classic 2.0 liter rally icons to the later 2.5 liter STI variants and the recent global chassis. Because spirited launches and stop/start traffic create wide temperature swings, the Thermostat responds rapidly, helping the cooling fans work less and improving fuel efficiency. A functioning Subaru WRX Thermostat also saves gaskets and heads, reducing the chance for costly failures and giving you peace of mind on long road trips. A corrosion resistant housing and tight manufacturing tolerances help the Thermostat stand out in a field of competitors. It affirms the sporty legacy which penetrates the wider Subaru WRX family. For drivers trying to beat grid times at the track or driving to the shops, this little defender keeps the Subaru WRX engine safe, strong, and ready for the next mile.

Our website stands as the go-to online destination for OEM Subaru WRX Thermostat. With complete lines of genuine Subaru WRX Thermostat available at unbeatable market prices, we ensure top quality, reliability, and durability. Each part comes backed by the manufacturer's warranty, reinforcing your trust in our offerings.

Related Subaru WRX Parts