Genuine OEM Audi Thermostat Housing, part number 7L6121115. This essential component houses the engine's thermostat, playing a critical role in regulating coolant flow and maintaining optimal engine operating temperature. It is situated within the engine cooling system, connecting various coolant hoses. Weighing 0.2 kg, this housing is designed to withstand the thermal and pressure demands of the cooling system. Choosing a genuine OEM thermostat housing ensures a perfect seal, resistance to corrosion, and the precise fitment required for effective temperature management and prevention of coolant leaks.