Genuine OEM Audi Vacuum Pump Gasket, part number 4F0145117. This O-ring gasket is designed to create a tight seal for the vacuum pump, preventing air leaks and ensuring the vacuum system operates at its intended pressure. It is a small, orange-colored component, weighing 0.002 kg and with a diameter of approximately 0.053 m. Choosing a genuine OEM gasket ensures the correct material composition and precise dimensions for a perfect seal, which is critical for maintaining vacuum system performance and preventing potential damage from leaks.