LJ 4200, 4240, 4250, 4300, 4350 Aftermarket 41 Tooth Gear for Swing Plate Assembly (OEM# RU5-0277). Keep your printer up and running with remanufactured and aftermarket printer parts with performance rates as good as OEM. These compatible parts go through an ISO-certified manufacturing process and are subjected to rigorous quality testing protocols. 1-year warranty.