Based on this product's specifications, here are some alternatives and similar models
Flashforge AD5X Stepper Motor for Change Channel
Summary description:
The Flashforge AD5X stepper motor is a specialized replacement component designed for the change channel mechanism in compatible Flashforge 3D printers. This high-quality spare part ensures precise movement and reliable operation of the filament feeding system. It is essential for maintaining optimal 3D printing performance and is engineered for easy integration into the printer's internal assembly.