Genuine OEM Audi Fuel Filter, part number 4M0127401G. This essential filter removes impurities and contaminants from the fuel supply, protecting sensitive fuel system components like injectors and the engine itself from damage. It is located within the fuel supply line. Weighing approximately 1.763 kg, this filter is designed for high filtration efficiency. Choosing genuine OEM ensures optimal filtration performance and flow characteristics, crucial for maintaining fuel system health and engine reliability.