Genuine OEM Volkswagen Power Steering Reservoir Cap, part number 5C0422376. This cap provides a secure seal for the power steering fluid reservoir, preventing leaks and contamination. It typically includes an integrated dipstick for convenient fluid level checks. Weighing approximately 0.04 kg, it is designed for a precise fit. A genuine OEM reservoir cap ensures a proper, airtight seal, preventing fluid evaporation and contamination, which is crucial for the longevity and performance of the power steering system.