Genuine OEM Volkswagen Seal Ring, part number 0XW145736M. This seal ring provides a seal for the turbocharger oil return line to prevent leaks. It is located on the turbocharger oil return line assembly. The seal is typically made of a durable rubber or composite material designed to withstand high temperatures and oil exposure. Genuine OEM parts ensure the correct fit and function, maintaining the integrity of the turbocharger lubrication system and preventing oil leaks.