Genuine OEM Volkswagen Seal Ring, part number 0XW121065. This seal ring creates a tight seal between two mating surfaces to prevent leakage of fluids or gases. It is located at position 17 in the diagram. The seal ring has dimensions of 0.042m x 0.042m x 0.003m. Genuine OEM seal rings are manufactured with precise tolerances to ensure a perfect fit and reliable sealing, preventing leaks and maintaining the efficiency of the cooling system.