Racing Thermostat fits HONDA CIVIC SI 2006-2013 (MMTS-CIV-06)


  • Fits the 2006–2013 Honda Civic SI
  • Activates at lower temperature so coolant flows through system earlier
  • Allows for cooler engine temperatures
  • Mishimoto Lifetime Warranty

In Stock


The Mishimoto racing thermostat for the 2006-2011 Honda Civic Si 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 (68°C) than standard thermostats (82°C), also allowing the coolant to flow through the engine sooner thus reducing and maintaining cooler engine temperatures.

Additional information

Weight 1 lbs
Dimensions 4 × 4 × 4 in


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