Genuine OEM Volkswagen Engine Coolant Hose, part number 0XW122051. This hose transports coolant between engine components in the cooling system. It is located at position 31 in the diagram. This part is made of rubber and has dimensions of 0.195m x 0.058m x 0.045m. Genuine OEM hoses are constructed with specific materials and routing to ensure proper coolant flow and prevent leaks under high temperatures and pressures.