Liftmaster 41A4885-5 Belt Drive Gear & Sprocket Assembly Garage Opener 2280 3585

041A4885-5 is a Belt Drive Gear and Sprocket Replacement Kit. For use with various LiftMaster® and Chamberlain® AC Belt Drive Garage Door Openers; manufactured after 1993. Complete kit includes: helical gear and top hat assembly, worm gear, wear bushings, grease, and hardware needed to replace the belt drive gear