This product is a Genuine BMW Radiator Coolant Hose with the part number 17128678498. It is a high-quality replacement hose for the radiator coolant system in BMW vehicles. This hose is designed to withstand high temperatures and extreme pressure, ensuring efficient and reliable cooling of the engine. It is made from durable materials and is an exact fit for BMW models, providing a secure and leak-free connection between the radiator and the engine. This radiator coolant hose is an essential component for maintaining the proper functioning of the vehicle's cooling system.