41A5021 Replacement Chain Drive Gear/ Worm Kit

The 41A5021 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.

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Note: You must have a chain like the one below for the 41A5021 gear kit to work.