
The Mishimoto 68°C racing thermostat for 2006–2011 Honda Civic Si promotes earlier coolant flow by opening at a lower temperature than stock thermostats. Intended for modified or turbocharged engines, it allows coolant circulation to begin sooner to reduce peak oil and engine temperatures. The aftermarket thermostat is supplied specifically for Civic Si models and targets improved cooling performance under demanding conditions.
Mishimoto 06+ Honda Civic Si Racing Thermostat 68 Degrees