Genuine OEM Volkswagen Vacuum Hose Assembly, part number 03H133778AT. This complex hose assembly is designed to transport vacuum within the engine system, connecting various components and ensuring proper operation of vacuum-actuated systems. It includes all necessary connecting parts for a complete and secure installation. Weighing 0.043 kg, this assembly is engineered for precise routing and sealing. Using a genuine OEM vacuum hose assembly guarantees the correct material composition for vacuum integrity, resistance to engine bay temperatures, and exact fitment, preventing leaks and maintaining optimal engine performance.