Genuine OEM Audi Fuel Filler Cap, part number 8E0201550H. This cap is designed for Diesel fuel systems, providing a secure seal for the fuel filler neck to prevent fuel evaporation, contamination, and spills. It includes an integrated tether to prevent loss. Weighing approximately 0.075 kg, this genuine OEM fuel cap ensures a perfect fit and proper sealing, maintaining fuel system integrity and preventing costly fuel loss.