Genuine OEM Volkswagen Sealing Plug, part number N91038002. This plug is designed to seal an opening or hole, preventing the escape or ingress of fluids or gases. It is located at position 19 in the brake assembly diagram. The precise fit ensures a tight seal, crucial for maintaining brake system integrity. Genuine OEM sealing plugs are made from durable materials to resist corrosion and maintain sealing performance over time.