Bambu Lab H2 Series Part Cooling Fan is a replacement component designed for compatible Bambu Lab H2 Series 3D printers. Located at the base of the toolhead, the fan works together with the Air Duct to quickly cool freshly extruded filament during printing. This airflow supports controlled cooling of printed layers and helps maintain proper operation of the printer’s part-cooling system. The component is intended for maintenance or replacement of the original cooling fan when required.