Replacement Gear and Sprocket assembly for ALL 1984-current garage door opener Compatible with ALL fail safe units from Liftmaster, Chamberlain, Craftsman, Sears, Master Mechanic and Wayne Dalton.

If your opener is mounted to a one piece wooden door this is the unit you want!

Includes metal sprocket assembly, plastic worm wheel and Lubriplate grease Compatible with garage door opener models: 1345, 1355, 3265, 3245, 3255, 2245, 2255, 2265, 2265-267, PD210, PD212, PD610, PD612K, 1200 Series, 1240, 1245, 1245-266, 1246, 1250, 1250-266, 1255, 1255-166, 1255-266, 1256, 1260, 1260-166, 1260-266, 1265, 1265-267, PD752, 7420, 140, 150, 240, 350, 450, 550, 1000, 1100, 1200, 2000, 2100, 2200, 4000, 4001, 4100, 4200, 5000, 5100, 6200, 700WHC, 701WHC, 710WHC, 711WHC, 7200, 7220, CG40 and more. Not all models listed.

Original manufacturer replacement part