LiftMaster 41C4470 Gear and Sprocket Assembly.
The LiftMaster gear and sprocket assembly part 41C4770 is the most common part to wear out in a garage door opener. This is the genuine replacement made by LiftMaster and includes everything needed for quick installation. Kit includes: Spring & thrust washer, retaining ring, bearing plate, (2) roll pins, drive and worm gear, helical gear (with retainer), sprocket, shaft, and grease. For use with Chamberlain Liftmaster commercial models ATS211 & 211R
- Compatible with LiftMaster ATS211 and ATS211R models
- 100% Brand New Authentic LiftMaster Part