The LiftMaster 71-1541B32LGH Sprocket Kit is an OEM replacement component for commercial sectional overhead garage door operators. Featuring a 32-tooth configuration with a 1" bore, this kit is designed to restore smooth, reliable chain drive operation on LiftMaster systems that use a 1" output shaft for sectional door applications. Use it to replace a worn or damaged drive sprocket on compatible LiftMaster trolley or hoist operators powering sectional doors, helping maintain proper door travel, consistent performance, and long service life.
This replacement sprocket is intended for operators and configurations that specifically call for a 32-tooth, 1" bore sprocket; always confirm the part number and tooth count in the operator’s parts breakdown before ordering. For best results, match the sprocket to the chain type specified by LiftMaster for the operator model, and verify alignment and tension during installation. Professional installation is recommended: disconnect power, follow lockout/tagout procedures, seat the sprocket on the shaft as directed by the manufacturer, secure fasteners to spec, align the drive, and reinstall any required guards. Proper setup helps preserve UL 325 compliant operation when performed in accordance with the operator manual. Typical use cases include repair and maintenance of LiftMaster commercial sectional door operators found in facilities such as warehouses, service bays, and light-industrial locations.