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Includes: Gear and sprocket, worm gear, grease, motor shaft bearings, sprocket bearings, instructions
Compatible with chain drive chamberlain sears craftsman manufactured operators 1984-current
Compatible with chamberlain, sears, craftsman and lift master 1/3 and 1/2 HP chain drive models
Verified 100% authentic OEM lift master product- new production dates
Easy DIY- complete assembly