41A4252 LiftMaster Chain Drive Complete Gear Kit

The 41A4252 unit can use this Chain Drive Gear Kit to replace chain drive gear and sprocket. This complete kit includes these items: Helical gear, worm gear, wear bushings, grease, and hardware needed to replace the chain drive gears.

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