Genuine OEM Volkswagen Coolant Hose, part number 3D0122447DC. This hose is a critical component of the engine's cooling system, responsible for transporting coolant between various parts such as the radiator, engine block, and heater core. It is constructed from durable, heat-resistant materials to ensure longevity under demanding operating conditions. Genuine OEM parts guarantee exact fitment and reliable performance, maintaining the integrity of your cooling system.