Genuine OEM Audi Brake Vacuum Hose, part number 4M1611931E. This pre-formed hose is a vital component in the braking system, responsible for transferring vacuum pressure from the engine to the brake booster. This vacuum assist is crucial for reducing the effort required to apply the brakes, ensuring effective and safe stopping power. The hose features a specific molded shape for correct routing and connection. Weighing 0.04 kg, using a genuine OEM hose guarantees the correct material composition, precise dimensions, and resistance to vacuum collapse, which are critical for consistent and reliable brake performance.