Genuine OEM Volkswagen Power Steering Reservoir Cap, part number 7L6422376. This cap is designed to securely seal the power steering fluid reservoir, preventing contamination and fluid leaks from the hydraulic steering system. It ensures the power steering fluid remains clean and at the correct level for optimal system performance. Weighing 0.026 kg, this cap provides a tight seal. Using a genuine OEM cap guarantees a precise fit and proper sealing, which is crucial for maintaining the integrity and longevity of the power steering system.