LiftMaster 41A5668 Gear and Sprocket Assembly

The LiftMaster 41A5668 is a complete gear and sprocket replacement kit designed to restore the reliability of your chain-drive garage door opener. This genuine OEM assembly is the primary solution for addressing common mechanical failures, such as a humming motor that fails to move the door or visible wear on the internal nylon gears. By replacing the entire sprocket assembly rather than individual components, you ensure that all drive parts maintain factory-standard tolerances for smoother and quieter operation.

Engineered for light-duty commercial and residential applications, this kit is specifically compatible with the LiftMaster ATS series, including models ATS211X and ATS2113X. It features a high-strength 9-tooth drive sprocket and includes the matching worm gear, wear bushings, and specialty lubricant required for a professional-grade repair. Using this direct-fit replacement kit helps extend the lifespan of your operator while maintaining its original UL-listed safety performance.