Genuine OEM Mini Thermostat With Gasket, part number 11537596787. This thermostat regulates engine coolant temperature by controlling the flow of coolant through the radiator. It opens and closes at specific temperatures to maintain the engine within its optimal operating range, ensuring efficiency and preventing overheating or undercooling. The included gasket ensures a proper seal. Genuine OEM thermostats are calibrated for precise temperature regulation, critical for engine health and performance.