Genuine OEM Volkswagen Coolant Hose, part number 3D0122447BG. This hose is a vital part of the engine's cooling system, responsible for circulating coolant between the engine and the radiator. Maintaining proper coolant flow is essential for preventing engine overheating and ensuring optimal operating temperature. The hose is constructed from durable materials designed to withstand high temperatures and pressures. Genuine OEM parts guarantee exact fitment and long-term reliability in the demanding cooling system environment.