Genuine OEM Volkswagen Vacuum System Plug, part number 035133777A. This small, critical component is designed to seal off unused ports or connections within the vehicle's vacuum system, preventing leaks and ensuring correct vacuum pressure. It is typically found inserted into a vacuum hose or manifold. Weighing only 0.00042 kg and measuring approximately 17mm in length, this plug is engineered for a precise fit. Using a genuine OEM plug ensures the integrity of the vacuum system, which is vital for various engine and accessory functions.