Genuine OEM Audi Fuel Filter with Regulator, part number 1J0201051B. This essential component performs a dual function: it effectively filters impurities from the fuel supply and precisely regulates fuel pressure to the engine, ensuring consistent performance and protection for fuel injectors. It is installed within the vehicle's fuel system. Weighing 0.227 kg, this genuine OEM filter and regulator assembly guarantees optimal fuel quality and pressure, critical for engine longevity and efficient combustion.