Genuine OEM Audi Engine Vacuum Hose, part number 8K0131850M. This flexible hose is designed to transport air or vacuum signals within the engine's emissions control system, crucial for the proper function of various components. It is positioned as part of the exhaust gas monitoring or control assembly. The hose is lightweight at 0.03 kg and measures approximately 0.185m in length. Using a genuine OEM hose ensures the correct material composition, precise routing geometry, and resistance to engine bay temperatures and fluids, preventing leaks and maintaining system integrity.