Genuine OEM Volkswagen Seal Ring, part number 0XW103121. This seal ring is designed to seal the balancer shaft module and oil pump assembly, preventing oil leaks and maintaining proper lubrication system pressure. It ensures the integrity of the oil circulation system. Made from high-quality rubber or composite materials, genuine OEM seal rings provide a reliable barrier against fluid loss. Proper sealing is vital for engine health and preventing oil-related damage.