Genuine OEM Audi Oil Reservoir Cap, part number 4F0422376. This cap provides a secure and leak-proof seal for the oil reservoir opening, protecting the fluid from contamination and preventing spills. It is designed to fit precisely onto the reservoir. Weighing 0.045 kg and with a diameter of approximately 0.066 m, it ensures a tight fit. Choosing genuine OEM ensures the correct material composition for fluid resistance, precise threading or sealing mechanism, and long-term durability for critical fluid containment.