Genuine OEM Audi Flexible Liquid Refrigerant Hose, part number 4F0260113. This hose is a vital part of the vehicle's air conditioning system, designed to safely transport liquid refrigerant between components. It is constructed from specialized materials that resist degradation from refrigerant chemicals, high pressures, and temperature fluctuations. Genuine OEM hoses are engineered for precise diameter and flexibility, ensuring optimal refrigerant flow and preventing leaks, which is critical for the efficiency and longevity of the A/C system.