Genuine OEM Audi Engine Coolant Hose, part number 057121058A. This hose is designed to carry coolant between various engine components, playing a vital role in the engine's thermal management system. It connects specifically to a heat exchanger, ensuring efficient heat transfer. Weighing approximately 0.0934 kg, this molded hose is built to withstand high temperatures and pressures. Using a genuine OEM coolant hose guarantees the correct material composition, precise routing, and secure connections, which are crucial for preventing leaks and ensuring the long-term reliability of the cooling system.