Genuine OEM Volkswagen Coolant Hose, part number 05E121497. This hose is a critical component of the engine cooling system, responsible for circulating coolant between the engine, radiator, and heater core. It is designed to withstand high temperatures and pressures. The hose is made from robust, heat-resistant materials to ensure a long service life and prevent leaks. Genuine OEM hoses are manufactured to exact specifications for a perfect fit and reliable operation.