Genuine OEM Volkswagen Thermostat Housing, part number 06M121115H. This component is a vital part of the engine cooling system, designed to house and protect the engine's thermostat. It directs the flow of coolant, ensuring the engine reaches and maintains its optimal operating temperature for efficiency and longevity. Weighing 0.234 kg, this housing is engineered for precise fitment and sealing. Choosing a genuine OEM thermostat housing guarantees proper material resistance to heat and coolant chemicals, accurate sensor mounting points, and leak-free operation, which are crucial for effective engine temperature management.