Fit For： Ford Focus 2.0L 2012-2018 What is a car thermostat? The primary function of a thermostat is to maintain a minimum operating temperature in the car's engine. When the engine is started, the antifreeze and coolant mixture is kept within the engine by the thermostat. It opens upon reaching a specified temperature. What is a Thermostat Housing? The thermostat housing is where the thermostat is fitted to perform its operation. A broken housing might cause the thermostat to fail, which, in turn, could cause damage by overheating your engine. How To Replace a Car's Thermostat？ .
