Genuine OEM Audi Fuel Filter with Pressure Regulator, part number 3D0201051. This essential component is responsible for filtering impurities from the fuel and regulating its pressure before it reaches the engine. It is typically mounted near the fuel tank. Weighing approximately 0.321 kg, this integrated unit ensures clean fuel delivery and consistent fuel pressure. Choosing a genuine OEM fuel filter and pressure regulator guarantees proper filtration efficiency, accurate pressure regulation, and compatibility with the vehicle's fuel system, which is crucial for engine longevity and performance.