Genuine OEM Audi Brake Servo Vacuum Pipe, part number 8J0611931F. This essential component transmits vacuum pressure from the engine to the brake servo, providing power assistance for the braking system. It is typically located within the engine bay, connecting to the brake booster. The pipe features a protective silver wrapping, likely for heat insulation. Choosing genuine OEM ensures the correct material composition, precise length and routing geometry, and robust connections to maintain vacuum integrity for consistent and safe braking performance.