Genuine OEM Audi Vacuum Check Valve, part number 06A133528D. This component is crucial for maintaining correct vacuum pressure and flow direction within various engine systems, preventing backflow. It is typically installed inline within a vacuum hose. Constructed from durable plastic, it is designed to withstand engine bay temperatures and pressures. Choosing genuine OEM ensures the correct opening and closing pressures for optimal engine and emissions system performance.

Catalogue entry: VALVE.