Chamberlain Sears LiftMaster Garage Door Opener Shaft & Sprocket 41A5021 part

Description

QUANTITY 1: (one) compatible gear spindle replaces LIFTMASTER PART # 41C4220A Gear and Sprocket Assembly
The 41C4220A Gear and Sprocket Assembly is the preferred way to "refurbish" your garage door opener as it quickly replaces the common wear parts in the opener drive system.
Fits most chain drive openers manufactured since 1984 by: Liftmaster, Chamberlain, Sears Craftsman, Master Mechanic, Raynor and some units from Wayne Dalton. Replaces part 41A2827. Gears are not available for openers manufactured prior to 1984.
Fits these Liftmaster Models: 985, 1240, 1240R, 1245, 1245R, 1245LK, 1250, 1255, 1255R, 1260, 1260LK, 1265, 215WD, 220WD, 315WD, 320WD, 1345, 2245, 2255, 2265, 2565, 3245, 3255, 3265. Do not use for openers with dual sprockets on the output shaft.
Fits these Chamberlain Models: 1100, 1200, 2100, 2200, 4100, 4200, CG40, CG40D, CG42D, PD100, PD200, PD210, PD210D, PD212, PD212D, PD600, PD610, PD610D, PD612KLD, PD612K, 5100, 6200, 7200, 7220, 7320, 7420, 7520D, 4893OD, HD200D. Do not use for openers with dual sprockets on the output shaft.
Note: Also fits openers labeled under various names such as: Sears Craftsman, True Value, Master Mechanic, and some units from Wayne Dalton. Liftmaster also "private labeled" openers for regional suppliers and dealers - usually it is very easy to see that it is a Liftmaster opener with a different name on the cover. Compare your parts to the picture above. The Large Gear is 2 3/4" x 1/2" wide, with a 1/2" bore. (all sizes are approximate).
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.
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