41A4252 LiftMaster Chain Drive Gear/ Worm Kit

The 41A42521 drive and worm gear replacement kit is compatible with chain drive garage door openers. This gear kit includes the following items (1) helical gear, (1) worm gear, (1) grease, wear bushings, and hardware needed to replace the gears.

Usually Ships In One Business Day!

Note: You must have a chain like the one below for the 41A4252 gear kit to work.