Mishimoto Racing Thermostat 2001-14 Impreza WRX & 2001-20 STI

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Mishimoto Racing Thermostat 2001-14 Impreza WRX & 2001-20 STI

Fits the 2001–2014 Impreza WRX & 2001–2020 STI

Activates at lower temperature so coolant flows through system earlier

Allows for cooler engine temperatures

Mishimoto Lifetime Warranty


The Mishimoto racing thermostat for the Subaru WRX 2001–2014 / STI 2001–2016 will promote greater cooling efficiency throughout your engine. The Mishimoto racing thermostat will significantly lower high engine temperature produced by modified and upgraded turbo applications. Once the engine is fully warmed up the Mishimoto racing thermostat will open up at a lower temperature than standard thermostats, also allowing the coolant to flow through the engine sooner thus reducing and maintaining cooler engine temperatures.

OEM Activation Temp C 78°C
Mishimoto Activation Temp (Celsius) 68°C

Purchase Includes

  • 1 Mishimoto Thermostat
  • Mishimoto Lifetime Warranty


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1997-10 Forester Inc GT/XT
1989-10 Liberty