Mishimoto Racing Thermostat - Honda Civic SI 06-13, Acura TSX 04-08, Honda CRV 07-13 - MMTS-CIV-06PRODUCT FEATURES Fits the 20062013 Honda Civic SI Activates at lower temperature so coolant flows through system earlier Allows for cooler engine temperatures Mishimoto Lifetime Warranty DESCRIPTION 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