Drive/Worm Gear Kit 41A2817.  The kit comes with Spur and worm gears, grease, bushing, pins, washers, and retaining rings / clips. 

These are brand new and complete as distributed from Liftmaster !

Please Note: Some vendors are selling cheap "knock off" Spur gears on the internet - Liftmaster only distributes their gears as a set. If you only replace the large spur gear it will only last a short time as it will not mesh properly with your old worn worm gear. Always replace both gears together and lubricate them with the supplied grease.

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, ATS2113X.

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.

Note:  Also fits openers labeled under various names such as: Sears Craftsman, True Value, Master Mechanic, and some units from Wayne Dalton.  Liftmaster also "private labeled" openers for regional suppliers and dealers - usually it is very easy to see that it is a Liftmaster opener with a different name on the cover.  Compare your parts to the picture above.  The Large Gear is 2 3/4" x 1/2" wide, with a 1/2" bore.  The worm gear is 1 1/8" OD, and the teeth are 1 1/4" wide (all sizes are approximate).

Shipping: We will ship US Priority mail for fast delivery !  Flat rate priority shipping $10.00 is for continental USA only.  Priority International mail to Canada is $15.95

Returns: You may return or exchange an item (excluding any shipping charges) within a period of fourteen (14) days according to the following guidelines: All returned merchandise must be clean and in an unused condition (no modifications of any kind). All merchandise must be returned in original manufacturers packaging with all supplied accessories, and documentation. All returns must be Return Authorization (RA) number.

Sales Tax: NY State Residents Pay 8.0%