Based on this product's specifications, here are some alternatives and similar models
Development Drive Unit Ricoh B2131136 SPEC for Ricoh copiers and multifunction printers
Summary description:
Replacement development drive unit Ricoh B2131136 SPEC designed for use in compatible Ricoh copiers and multifunction printers. This unit is a factory-designated component intended to drive the development system that transfers toner during printing. It is suitable for maintenance and repairs to restore print functionality and reliability in office or production environments.