Garage Door Opener Drive Gear for Liftmaster 1245LK, 1280R, 200WD, 210WD, 1246R
Fits/For 1984-current Liftmaster, Craftsman chain drive and belt drive operators. NOT compatible with openers made before 1984. Chainsaw & Concrete Saw Parts. Garage Door. If your operator runs when you press the button, but the door won’t open, this is likely the part that needs replacing.