Genuine OEM Audi Brake Servo Vacuum Pipe, part number 4K0611931AL. This pipe is essential for transmitting vacuum pressure to the brake servo, which provides power assistance for braking. It is positioned within the brake system, connecting to the brake booster. Constructed from durable materials, it maintains vacuum integrity for reliable brake performance. Using a genuine OEM vacuum pipe ensures precise routing, correct pressure characteristics, and leak-free operation, critical for brake system safety and responsiveness.