Genuine OEM Audi Vacuum Hose, part number 038131055BS. This hose plays a critical role in the engine's vacuum system, transporting vacuum pressure to various components for proper operation of emissions control, brake booster, or other engine management systems. It is integrated within the engine bay's complex network of lines. Measuring 0.53 meters in length, this hose is engineered for specific pressure and temperature requirements. Using a genuine OEM vacuum hose ensures correct material composition, precise routing, and secure connections, preventing vacuum leaks that can lead to poor engine performance, increased emissions, or system malfunctions.