The LiftMaster 41A4836 Drive Sprocket Kit is an OEM replacement for the top drive sprocket used on select LiftMaster chain-drive garage door openers. This component transfers motor torque to the drive chain, and replacing a worn or broken sprocket restores smooth chain movement, consistent door travel, and reliable operation. It is intended for residential chain-drive operators produced by the Chamberlain Group under the LiftMaster brand and may also be used on compatible Chamberlain and Craftsman chain-driven models that specify 41A4836 in their parts list. Typical symptoms indicating the need for this kit include chain skipping, noisy operation, or visible sprocket wear.
Installation generally involves disconnecting power, releasing the door with the manual trolley, relieving chain tension, removing the opener cover, and swapping the sprocket on the motor head according to the owner’s manual. Basic hand tools are usually required, and chain re-tensioning and lubrication per manufacturer instructions help ensure long-term performance. This part is not intended for belt-drive or wall-mount (jackshaft) operators. For proper compatibility, confirm the part number in your opener’s manual or on the model-specific parts diagram before ordering. This genuine LiftMaster replacement part supports dependable residential use and is a direct-fit repair for chain-drive garage door opener systems.