Genuine OEM Audi Radiator Coolant Inlet Hose, part number 8K0121101L. This essential component is responsible for delivering hot coolant from the engine to the radiator, facilitating the cooling process. Constructed from durable rubber, it weighs approximately 0.271 kg and has a length of 0.215 m. Opting for a genuine OEM hose ensures precise fitment, proper routing, and resistance to high temperatures and pressures, which are vital for the longevity and efficiency of the cooling system.