Genuine OEM Audi Engine Coolant Hose, part number 1K0121086BD. This essential component is designed to transport engine coolant between various engine components, ensuring efficient heat exchange and maintaining the engine's optimal operating temperature. The hose features a branched design to connect multiple points within the cooling system. Made from durable, heat-resistant rubber, it weighs 0.36 kg. Choosing a genuine OEM coolant hose guarantees the correct routing geometry, material composition, and resistance to engine fluids and temperatures, preventing leaks and ensuring reliable cooling system performance.