Genuine OEM Audi Coolant Pipe Connector Housing with Thermostat, part number 07C121065S. This essential component is integrated into the engine cooling system, serving to connect multiple coolant pipes and precisely regulate the engine's operating temperature via an integrated thermostat. It ensures efficient heat management and prevents overheating or undercooling. Weighing 0.1465 kg, its compact design is crucial for proper fitment within the engine bay. Choosing a genuine OEM part guarantees the correct material composition, sealing surfaces, and thermostat calibration for reliable temperature control and a leak-free cooling system.