This product is a Genuine BMW Radiator Coolant Hose with the part number 17129894765. It is a high-quality hose designed specifically for use in BMW vehicles. This hose is responsible for carrying coolant from the radiator to the engine, helping to regulate the engine's temperature and prevent overheating. It is made from durable materials and is designed to fit perfectly in BMW models. This hose is an essential component for maintaining the proper functioning of the cooling system in a BMW vehicle.