For XF Engine Coolant Thermostat Housing LR073372 LR1357091 Function: The automotive thermostat is built to withstand the harsh environment of the engine compartment ensuring your vehicle's cooling system remains in optimal working order For time. Temperature Control Performance: Built-in thermostat helps adjust engine temperature and keep it within the proper range. Material: Thermometer housing is made of a rugged and durable material, with stability and durability, which can prevent rupture of pipes or seals and extend service life. Features: The thermostat housing's material effectively resists warping and cracking preventing potential coolant leaks and serious engine damage ensuring the long-lasting performance of your vehicle.