Genuine OEM Hyundai Fuel Filler Neck Assembly, part number 31030Q0000. This assembly is responsible for directing fuel from the vehicle's filler door into the fuel tank, forming a critical sealed pathway during refueling. It is located at the rear of the vehicle, connecting the external fuel door to the fuel tank. Choosing a genuine OEM filler neck assembly ensures the correct routing geometry, durable materials, and proper sealing to prevent fuel leaks and maintain system integrity.