Genuine OEM Volkswagen Fuel Filter, part number 2N0127401AA. This filter is designed to remove impurities from the fuel, ensuring that only clean fuel reaches the engine for optimal performance and longevity. It is located as part 1 in the diagram. Manufactured with specific filter media and housing materials to meet stringent OEM standards. Genuine OEM parts provide guaranteed filtration efficiency and material compatibility, protecting your engine from contaminants.