The LiftMaster gear and sprocket assembly part 41A5585-1 is the most common part to wear out in a garage door opener. This is the genuine replacement made by LiftMaster and includes everything needed for quick installation. The 41A5585-1 gear and sprocket assembly includes the drive gear(41A2817), worm gear, helical gear(41A2818), retainers, washers, pins, bearing plate, grease and instructions.
Replaces part number: 41A5585
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Compatible with LiftMaster 2575, 3275, 3575 and 3575S models