Genuine OEM Audi Coolant Hose, part number 079121065BN. This hose is part of the engine's cooling system, circulating coolant to regulate engine temperature. It is located in the engine bay, connecting various components of the cooling circuit. The hose weighs 0.4665 kg. Genuine OEM coolant hoses are constructed from durable materials designed to resist heat, pressure, and degradation from coolant chemicals.