This product is a Genuine BMW Radiator Coolant Hose with the part number 17125A37138. It is a high-quality replacement part for your BMW vehicle's cooling system. The hose is designed to transport 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 built to meet the specifications and standards set by BMW. This radiator coolant hose is an essential component for maintaining the proper functioning of your vehicle's cooling system.