Genuine OEM Audi Coolant Hose, part number 7H0121086A. This hose is designed to circulate coolant between engine components and the radiator, maintaining optimal engine operating temperature. It is positioned within the engine cooling system, connecting various parts. Weighing 0.21 kg and measuring approximately 0.27 m in length, it is constructed from high-quality, heat-resistant materials. Using a genuine OEM hose ensures correct routing geometry, pressure resistance, and material compatibility with the cooling system fluids, preventing leaks and premature failure.