Genuine OEM Audi Vacuum Hoses With Connection, part number 03G131051AH. This assembly of vacuum hoses and their connection block is vital for creating and maintaining the necessary vacuum levels for various engine systems. It ensures proper operation of vacuum-actuated components, such as the EGR valve, turbocharger wastegate, or brake booster, contributing to engine efficiency and emissions control. Weighing approximately 0.473 kg, this component is designed for precise routing and connection within the engine bay. Choosing genuine OEM vacuum hoses guarantees correct material composition, exact routing geometry, and reliable sealing, which are essential for maintaining stable vacuum and preventing system malfunctions.