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Liftmaster pinion gear and E-retainer clip for 41C4220A and 41A2817 garage door opener gear and sprocket assembly. Compatible with Chamberlain and Sears Craftsman openers.
If your operator is a 1/2hp or 1/3hp chain drive model produced from 1984 to present this (gear) kit will be compatible. Manufacture production date will be located on the back of the operator motor head. For maximum performance, the entire door assembly must be properly balanced, adjusted and lubricated for smooth operation. Door should open manually with reasonable effort. Lubriplate Areo low temp lubricant must be applied or the gear will shred.
If you have a BELT DRIVE model: The 41A4885-2 belt drive gear kit has 9 cog sprocket, the 41A4885-5 belt drive gear kit has a 14 cog sprocket.