The LiftMaster 041-0579-000 is a genuine OEM replacement part (chain sprocket and cover) for LiftMaster 2100L / 2220L / 2300L / 2420L chain drive garage door openers.
Check the parts diagram on the replacement parts page to confirm the correct component before ordering.
Genuine LiftMaster part — in stock and ready to ship. Call (866) 965-5599 for help.
