This product is a genuine Mercedes auxiliary radiator coolant hose with part number 2055016800. It is designed to be used in the cooling system of a Mercedes vehicle to transport coolant from the engine to the auxiliary radiator. The hose is made from high-quality materials and is specifically designed to fit and function seamlessly in Mercedes vehicles. It is a crucial component in maintaining the proper temperature of the engine and ensuring efficient cooling. This product is an original equipment manufacturer (OEM) part, meaning it is made by the same company that produced the vehicle. It is a reliable and durable replacement option for a damaged or worn out coolant hose.