Genuine OEM Audi Coolant Hose, part number 4M0819337BE. This hose is a vital part of the engine cooling system, responsible for circulating coolant between the engine, radiator, and other cooling components to maintain optimal operating temperature. It is specifically routed within the engine bay. Weighing 0.084 kg, this hose is constructed from durable, heat-resistant rubber compounds. Choosing genuine OEM ensures the correct material composition, precise internal diameter, and exact molded shape for proper routing and leak-free performance under high pressure and temperature, preventing cooling system failures.