Based on this product's specifications, here are some alternatives and similar models
Extruder assembly for Flashforge AD5M/AD5M Pro 3D printer, spare part model 20004098001
Summary description:
Replacement extruder assembly compatible with Flashforge AD5M and AD5M Pro 3D printers, model 20004098001. Intended as a direct spare part for filament feeding, melting and extrusion operations. Useful for repair or maintenance to restore printing performance, reduce downtime and ensure consistent filament flow. Fits original Flashforge mounting and connections.