Genuine OEM Audi Coolant Hose, part number 7M3122101D. This hose is designed to transfer coolant efficiently between various engine components, playing a critical role in maintaining optimal engine operating temperature. It is positioned within the engine cooling circuit, connecting key parts of the system. Weighing approximately 0.251 kg and measuring 0.4 meters in length, it is engineered for precise fitment. Choosing a genuine OEM coolant hose ensures the correct routing geometry, material composition, and pressure resistance, preventing leaks and premature failure that could lead to engine damage.