LiftMaster part 71-1541B48LGH is a replacement drive sprocket for select LiftMaster commercial rolling steel door operators. This door opener sprocket transfers motor torque to the chain, restoring smooth, consistent operation of chain-driven hoist systems used on rolling steel doors in warehouses, loading docks, parking structures, and other industrial facilities. Designed for OEM fitment, it helps maintain proper door travel and reliability when the original sprocket is worn or damaged.
Use this sprocket only on compatible LiftMaster commercial operators that specify part number 71-1541B48LGH in their parts list. Because sprocket pitch, tooth profile, and bore requirements vary by operator, always confirm compatibility in the operator manual or with LiftMaster technical support before ordering. Installation should be performed by a qualified door systems technician following lockout/tagout procedures, verifying chain alignment and tension, inspecting keyways and set screws, and re-lubricating the drive chain per manufacturer guidelines. Not a universal component; intended as a direct OEM replacement for the designated models.