LiftMaster – Gear And Sprocket Kit – Belt Drive
041A4885-5 is a Belt Drive Gear and Sprocket Replacement Kit.
For use with various LiftMaster® and Chamberlain® Belt Drive Garage Door Openers; manufactured after 1993 only.
Complete kit includes: helical gear and top hat assembly, worm gear, wear bushings, grease, and hardware needed to replace the belt drive gears.
LiftMaster - LJ8900W Light-Duty Commercial Door Operator for Sectional Doors 

