Genuine OEM Audi Coolant Hose with Coupling, part number 8R0121055. This hose is designed to transport coolant efficiently within the engine cooling system, facilitating heat exchange and maintaining optimal engine temperature. It features a coupling for secure and quick connection to the radiator. Constructed from durable, heat-resistant materials, it measures approximately 0.435m in length. Choosing a genuine OEM coolant hose ensures the correct routing geometry, material composition, and pressure resistance for a leak-free and long-lasting cooling system.