Genuine OEM Mini Upper Radiator Hose, part number 17122754221. This hose is responsible for carrying coolant between the engine and the radiator, playing a crucial role in the engine cooling system. It is installed in the upper section of the cooling system. The hose measures 0.288 m in length and weighs 0.257 kg. Genuine OEM coolant hoses are made from durable materials to withstand high temperatures and pressures, ensuring reliable engine cooling.