Genuine OEM Audi Engine Coolant Hose Assembly, part number 07L121030C. This hose is a crucial component in the engine cooling system, responsible for connecting various parts and facilitating the efficient circulation of coolant to regulate engine temperature. It is typically found within the engine bay, routing coolant between components. Constructed from durable rubber with a metal fitting, it weighs approximately 0.06 kg. Choosing a genuine OEM coolant hose ensures correct routing geometry, resistance to high temperatures and pressures, and long-term durability against coolant chemicals.