The 41a2817 is compatible with chamberlain manufactured openers 1984-current.(See motor head under light cover for the manufacture date of your unit).
- Sears craftsman chamberlain Liftmaster openers
- Gear diameter: 2 3/4"
- Kit includes: Drive gear, worm gear, replacement bearings, and installation instructions
- Drive gear diameter is 2-3/4 inches with 32 teeth
- Sears craftsman chamberlain Liftmaster openers
- Gear diameter: 2 3/4"
- Kit includes: Drive gear, worm gear, replacement bearings, and installation instructions
- Drive gear diameter is 2-3/4 inches with 32 teeth