Replacement motors for a variety LiftMaster commercial garage door openers and residential garage door operators. At Action Industries we have the motors needed to repair LiftMaster operators including AC chain drive, HP chain drive, jackshaft, screw drive, belt drive, and more. Motors provide the force needed to open and close the door and are essential for working garage door operators. These motors are only for LiftMaster operators and each is specially designed to work with specific models. Check replacement parts diagram or manual to ensure compatibility.