Check the listing for details. 3 Pack 41A2817 DRIVE GEAR For Chamberlain Liftmaster Sears Craftsman Garage Door. Condition: New. Listed at 9.99 USD. Only Garage Door Opener Drive Gear QUANTITY: 3 When you press the button and the operator runs, but the door won’t open; Mostly the opener driver gear needs to be replaced. This is the replacement gear only. You will need to provide gear grease. [Important: failure to grease, will result in the gear stripping out again] LiftMaster compatible gear in repair kit: 41A2817 & 41C4220A Works with: LIFTMASTER, CHAMBERLAIN, CRAFTSMAN, SEARS, MASTER MECHANIC AND WAYNE DALTON garage door operators. Compatible with 1984 – current Liftmaster, Craftsman chain drive and belt drive operators including the following: Chamberlain, Sears, Craftsman , Garage master, Access master, Master Mechanic, Security +, Estate series, Raynor, Formula I, Whisper drive, Power Drive, Billion Code garage door opener models Compatible with these belt drive models: 1280, 1280R, 2580, 2585, 8100, 8100M, 8200, 9200, WD922K, WD912KS, WD822KS Not all models listed, please email us to check compatibility if you’re unsure. Drive Gear Bore Size: 1/2" Drive Gear Outside Diameter: 2 3/4" Drive Gear Number of Teeth: 32 Compatible with these models: LiftMaster, Chamberlain CHAIN DRIVE garage door opener models: 1040, 1045, 1046, 1050, 1055, 1056, 1060, 100WD, 200WD, 300WD, 110WD, 210WD, 310WD, 1260LK, 1245LK, 215WD, 220ED, 315WD, 320WD, 1240R, 1245R, 1246R, 1255R, 1256R, 985, 2565, 2575, 2595, 140, 150, 240, 350, 450, 550, 700WHC, 701WHC, 1000, 2000, 4000, 4001, 5000, 710WHC, 711WHC, 1100, 2100, 4100, 5100, 7200, 1200, 2200, 4200, 6200, 7220, CG40, 7420, PD752, PD758S Fits over 170 Craftsman garage door openers, including the following models: 13918315SR, 13918415SR, 13918616SR, 13918847, 13918857, 13918869, 13918880, 13953100, 139531006, 13953110, 13953200, 139532006, 13953210, 13953225SRT, 13953225SRT1, 13953300, 139533006, 13953310, 13953315SR, 13953325, 13953325SRT, 13953325SRT1, 13953335SRT3, 13953400, 13953403, 13953413, 13953415SR, 13953425, 13953425SRT, 13953425SRT1, 13953500, 139535006, 13953513, 13953515SR, 13953525, 13953525SRT, 13953535SRT1, 13953600, 139536006, 13953602, 13953603, 139536036, 13953605, 13953606, 13953607, 13953608, 13953609, 13953610, 13953611, 13953612, 13953613, 139536141SR, 13953614SR, 139536151SR, 13953615SR, 139536181SR, 13953618SR, 139536191SR, 13953619SR, 13953622, 139536251SR, 13953625SR, 139536261SR, 13953626SR, 13953627SRT, 13953628SRT, 13953628SRT1, 13953629SRT, 13953629SRT1, 13953632SR, 13953635SRT, 13953635SRT1, 13953636SRT, 13953637SRT, 13953637SRT1, 13953638SRT, 13953639SR, 13953640SRT, 13953641SRT, 13953644SRT, 13953645SRT3, 13953646SRT2, 13953647SRT1, 1395364812, 13953648D, 13953648SRT2, 13953650SRT, 13953651SR, 13953660SRT1, 13953661SRT1, 13953661SRT3, 13953662SRT, 13953662SRT1, 13953662SRT2, 13953664SRT, 13953664SRT2, 13953669SRT, 13953670SRT, 13953670SRT1, 13953671SRT, 13953671SRT1, 13953671SRT2, 13953671SRT3, 13953672SRT1, 13953672SRT2, 13953672SRT3, 13953673SRT, 13953673SRT1, 13953673SRT2, 13953673SRT3, 13953674SRT1, 13953674SRT2, 13953675SRT, 13953675SRT1, 13953675SRT2, 13953677SRT, 13953677SRT1, 13953677SRT2, 13953677SRT3, 13953678SRT, 13953699SR, 139538000SRT1,13953800SRT, 13953800SRT1, 13953824SRT, 13953824SRT1, 13953834SRT3, 13953901DM, 13953903DM, 13953904D, 13953905DM, 13953910, 13953910D, 13953913SRT, 13953914, 13953914D, 13953914SRT, 13953915D, 13953915SRT, 13953916D, 13953920D, 13953920DM, 13953930D, 13953930DM, 139539511, 13953954, 13953959SRT, Listing and template services provided by inkFrog