Genuine OEM Volkswagen Coolant Hose, part number 0XW121058. This hose connects components within the engine's cooling system to facilitate the flow of coolant. It is located at position 11 in the diagram. The hose is made of rubber and has dimensions of 0.142m x 0.042m x 0.042m. Genuine OEM coolant hoses are manufactured to exact specifications to ensure proper fitment and resistance to heat and pressure, preventing leaks and maintaining engine cooling efficiency.