Genuine OEM Audi Coolant Hose, part number 5N0122157BE. This hose is a critical component of the engine cooling system, designed to carry coolant efficiently to regulate engine temperature. It connects various parts of the cooling circuit, ensuring proper circulation. Weighing 0.334 kg and measuring approximately 0.54 meters in length, this hose is built for durability. Choosing a genuine OEM coolant hose ensures correct routing geometry, material composition, and resistance to temperature and pressure fluctuations, preventing leaks and maintaining cooling system integrity.