Genuine OEM Audi Protective Ring, part number 08V525171. This protective ring functions as a seal or spacer within the differential housing, helping to prevent lubricant leaks and maintain the correct positioning of internal components. It is located within the differential assembly. Constructed from durable rubber or synthetic material, it is designed for long-term resistance to oil and rotational forces. Genuine OEM parts ensure precise dimensions and material compatibility for reliable sealing and component support.