Genuine OEM Volkswagen Fuel Filter, part number 7LA127401A. This filter removes impurities from the fuel before it reaches the engine. It is located at position 1 in the diagram. The filter has dimensions of 0.264m length, 0.082m width, and 0.082m height. Genuine OEM fuel filters are manufactured with precise filtration media and flow characteristics to ensure clean fuel delivery, protecting the engine from contaminants and ensuring optimal performance and longevity.