Description:

Replace 41A2817 41C4220A 81B0045, Compatible for All Chamberlain/Liftmaster/Sears Craftsman/Raynor Residential Garage Door Openers. Drive Gear Bore Size: 1/2", Drive Gear Outside Diameter: 2 3/4", Drive Gear Number of Teeth: 32. Fits for Craftsman over 170 garage door openers. Works with for ALL 1/3 HP, 1/2 HP and 3/4 HP chain and belt drive garage door openers manufactured from 1984 to the present.