- Replaces Part Number: 81B0045
- Specifications: Drive Gear OD: 2-3/4″ Drive Gear Bore Size: 1/2″ Drive Gear Number of Teeth: 32
- Fits Liftmaster Garage Door Opener Models: 1345, 1355, 3245, 3255, 3265, 2565, 3575, 3595, 2575, 2595, 1140, 1145, 1146, 1150, 1155, 1156, 1160, 1200 Series, 1240, 1245, 1245-266, 1246, 1250, 1250-266, 1255, 1255-166, 1255-266, 1256, 1260, 1260-166, 1260-266, 1265, 1265-267, 1270, 2245, 2255, 2265, 2265-267, 2280, 2280-267, 2280-976, 2580, PD210, PD212, PD610, PD612K, ATS211R, ATS211, WD822K, 140, 150, 240, 350, 450, 550, 1000, 1100, 1200, 2000, 2100, 2200, 4000, 4001, 4100, 4200, 5000, 5100
- Fits Raynor Garage Door Opener Models: 2245RGD, 2265RGD, 2280RGD, 2585RGD and 2595RGD. Fits Chamberlain Garage Door Opener Models: 1100, 1200, 2100, 2200, 4100, 4200, 4893OD, 5100, 6200, 710WHC, 711WHC, 7200, 7220, 7320, 7420, 7520D, 8100, 8100M, 8200, 9200, CG40, CG40D, CG42D, CSO, HD200D, HD600, PD100, PD200, PD210, PD210D, PD212, PD212D, PD600, PD610, PD610D, PD612K, PD612KLD, PD752, PD752D, PD758D, PD758S, WD822K, WD822KD, WD822KS, WD912K
- 3575, 3595, 2575, 2595, 1140, 1145, 1146, 1150, 1155