Genuine OEM Volkswagen Coolant Hose, part number 3Q0121101E. This hose is an essential part of the engine cooling system, responsible for circulating coolant between engine components, including the heater core, to maintain optimal operating temperatures. Weighing approximately 0.1274 kg, this genuine OEM hose is manufactured from high-quality, heat-resistant materials, ensuring a precise fit and leak-free performance for reliable engine temperature management.