Genuine OEM Hyundai Fuel Pump Filter, part number 311121R000. This critical component is designed to effectively filter out impurities and contaminants from the fuel supply before it reaches the fuel pump. It is typically integrated within the fuel pump assembly, often located inside the fuel tank. By ensuring a clean fuel flow, it protects the fuel pump, injectors, and other sensitive fuel system components from damage and wear. Weighing approximately 1.21 kg, this filter is a robust part of the fuel delivery system. Using a genuine OEM fuel filter guarantees the correct filtration efficiency, proper flow rate, and durable construction, which are vital for maintaining optimal engine performance and fuel system reliability.