Genuine OEM Audi Vacuum Reservoir, part number 7L6131541. This component is designed to store vacuum pressure, providing a stable and readily available vacuum source for various engine and auxiliary systems. It helps ensure consistent operation of vacuum-actuated components. Weighing approximately 0.31 kg, this reservoir is built for durability. Installing a genuine OEM vacuum reservoir guarantees proper pressure retention and integration with the vehicle's complex vacuum system, preventing performance issues.