Technical: The Large Gear has 32 teeth and is 2 3/4" x 1/2" wide, with a 1/2" bore (sizes are approximate).
You can add a tube of lubricant as an option if you don't have any on hand or aren't sure of the type to use.
Compatibility: Works with ALL 1/3 HP, 1/2 HP and 3/4 HP chain and belt drive garage door openers manufactured from 1984 to the present for these manufacturers: LiftMaster, Sears Craftsman, Chamberlain, Garage Master, Master Mechanic and Wayne Dalton. REPLACEMENT GEARS FOR LIFTMASTER CRAFTSMAN CHAMBERLAIN GARAGE DOOR OPENER MODELS MANUFACTURED PRIOR TO 1984 ARE NO LONGER AVAILABLE.
Fits these Chamberlain 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, WD912KS, WD922K.
Raynor Navigator 2245RGD, Ultra 2595RGD, Endeavor 2585RGD, Aviator 2280RGD, Pilot 2265RGD. Also used for Wayne Dalton opener models 100 to 320.
Fits these LiftMaster Models: 985, 1240, 1240R, 1245, 1245R, 1245LK, 1246, 1246R, 1250, 1255, 1255R, 1256, 1256R, 1260, 1260LK, 1265, 1270, 1280, 1280R, 1345, 1346, 1356, 215WD, 220WD, 2245, 2255, 2265, 2565, 2280, 2575, 2580, 2585, 2595, 315WD, 320WD, 3245, 3255, 3265, 3280, 3575, 3585, 3595, ATS211, ATS211R, ATS211X and ATS2113X.
Fits these Sears Craftsman models: 139.53990, 139.53992, 139.53914, 139.53985, 139.53930, 139.5365
, 139.53964, 139.53646, 139.53660, 139.53920, 139.53939, 139.184050, 139.18803, 139.18805, 139.18814, 139.18830, 139.53603, 139.53629SRT, 139.53629SRT1, 139.53674SRT2, 139.18850 and 139.18851.
Only the most common models are listed here are listed here. If you don't see your Sears Craftsman garage door opener model listed here, please click here for our Sears Craftsman Garage Door Opener Gear Compatibility Chart.
If you still don't see your model listed here, please email
us and we will let you know which gear is compatible with your opener.
Includes: Replacement heavy duty main drive gear ONLY (grease/lubricant is NOT included)
Miscellaneous: If you need or wish to also replace the sprocket and shaft, please see part number 41C4220A
. If you wish to also purchase the lubricant that you will need for this gear, please see part number 41A2817-CR
. Click here
to read our How To Article on replacing your garage door opener gear
Tools: If you are looking for the tool to easily remove the spring pin holding the gear in place be sure to check the option above to add the 5/32" roll pin tool. It is the best tool to easily remove the pin without damage. It also reduces the chance for injury when driving out the gear with improper tools.