Genuine OEM Audi Lower Radiator Hose, part number 4E0121055T. This critical component is responsible for carrying cooled coolant from the radiator back to the engine, ensuring efficient heat exchange and maintaining optimal engine operating temperatures. The hose is constructed from durable molded rubber, designed to withstand the high temperatures and pressures within the cooling system. Weighing approximately 0.301 kg and measuring 0.295 meters in length, it features precise bends and connections for a perfect fit. Choosing a genuine OEM lower radiator hose guarantees the correct material composition, resistance to degradation, and exact routing geometry for reliable and leak-free cooling.