Liftmaster-Sears Large Drive Gear Only



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Liftmaster Sears Large Main Drive Gear - (Drive Gear and Lube) with Quick Change Instructions

This Liftmaster Sears large main drive gear replacement is for all residential Sears Craftsman, Liftmaster, Master Mechanic, and Garage Master chain and belt drive openers manufactured from 1984 to the present. Direct replacement for main drive gear used in 41A2817 gear kit and 41C4220A gear and sprocket kit. Also used for Wayne Dalton opener models 100 - 320.

  • Bore Size: 1/2", Outside Diameter: 2 3/4", Number of Teeth: 32

This replacement gear is for the following garage door openers: Lift-Master, Sears Craftsman, Chamberlain, Master Mechanic, Garage Master, Wayne Dalton models 100 thru 320.

Change your gear fast and easy with our special instructions.

If you need the Full Liftmaster Sears Large Gear Replacement Kit - Part 41A2817 with worm gear, bushing & fittings we have it available also at a great price.

This quick change gear only kit also comes in a 10 pack gear set for the contractor or handyman who uses them more frequently.


These instructions make changing the gear quick & easy.

Here is what one customer said -

"I had the gear changed and everything working again in only 30 minutes. You guys rock! Thanks."

  • Main drive gear
  • Lubricant
  • Our own special Quick Change Instructions make it fast and easy to change the gear
Compatible with:

All 1/3 Hp, 1/2 Hp, 3/4 Hp Residential chain and belt drive garage door openers manufactured from 1984 to the present for these manufacturers:

  • Lift-Master
  • Sears Craftsman
  • Chamberlain
  • Master Mechanic
  • Garage Master
  • Wayne Dalton models 100 - 320 (100WD, 110WD, 200WD, 210WD, 215WD, 220WD, 300WD, 310WD, 315WD, 320WD)
Not compatible with Sears openers made before 1984 - body color of powerhead unit: brown, green, or yellow.