Genuine OEM Audi Engine Coolant Hose, part number 06F121447. This hose is responsible for transporting coolant between engine components to regulate and maintain optimal engine operating temperature. It is an integral part of the engine cooling system. Made from high-quality, heat-resistant rubber, it ensures reliable fluid transfer. Choosing a genuine OEM hose guarantees the correct routing geometry and material resistance to withstand engine bay temperatures and pressures.