Genuine OEM Volkswagen Coolant Hose, part number 5QE819337AG. This hose is part of the engine cooling system, circulating coolant to regulate engine temperature. It connects various components within the cooling circuit to ensure efficient heat transfer. Manufactured from high-quality, heat-resistant rubber to prevent leaks and withstand system pressures. Genuine OEM hoses are designed for exact fitment and optimal flow, ensuring the cooling system operates effectively and preventing engine overheating.