If you have a broken sprocket assembly on a Raynor Airman garage door opener or one of the AC motor belt drive Liftmaster or Chamberlain garage door operator (see the lists below) then the 41A4885-4 Gear and Sprocket Assembly is the necessary replacement. The 41A4885-4 belt drive gear and sprocket assembly is for specific Liftmaster, Chamberlain, and Raynor belt drive AC motor garage door openers manufactured after 2011. The gear assembly includes drive gear assembly, worm gear, wear bushings, grease, hardware and instructions for replacement.
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