Genuine OEM Volkswagen Fuel Filter, part number 4M0127401H. This component filters impurities from the fuel before it reaches the engine, ensuring clean combustion and optimal performance. It is located at position 1 in the fuel system assembly. The filter is critical for protecting the engine from contaminants and ensuring smooth operation. Genuine OEM fuel filters are manufactured to precise standards to effectively remove particulate matter, safeguarding your engine's fuel injectors and internal components.