Genuine OEM Volkswagen Coolant Hose, part number 3Q0121156. This hose is a critical component of the engine cooling system, responsible for circulating coolant between the engine and radiator to maintain optimal operating temperature. It features a quick-connect fitting for secure and easy installation. Manufactured from high-quality, heat-resistant materials, this genuine OEM hose ensures reliable performance and prevents leaks. Genuine OEM coolant hoses are designed to withstand extreme temperatures and pressures, ensuring the longevity of your cooling system.