41c4220 aka 41a2827 Chain drive Gear assembly kit used on all AC powered Sears Craftsman, Liftmaster and Chamberlain Residential Garage door openers Instructional Video on how to change gear kit Gear sprocket assembly. Complete with: shaft, sprocket spring washer, thrust washer, retaining ring, bearing plate, roll pins (2), drive gear worm gear, helical gear w/retainer grease for units from 1993 to present 41c4220 Installation Instructions (click here)
041-0136 is a Safety Sensor Replacement Kit. For use with various LiftMaster and Chamberlain Belt Drive and Chain Drive Garage Door Openers featuring myQ technology and Secure View Video Camera; manufactured after 1997. Complete kit includes: Sending sensor (with LED), receiving sensor (with LED), 2-conductor wire, (5) wire connectors, and replacement hardware which is not compatible with the older style safety sensor kits Liftmaster Safety Sensors kit (used on 1997-current units)one side has amber led other side has green led units attach to brackets by head of carriage bolt (they do not have a bolt hole through them) units measure appx 2-3/8 " long w/3 feet 2-conductor wire
These eyes have been replaced by the 041-0136 that can be used to replace the older 41a5034 eyes, suggest getting the new style mounting brackets 041-0155-000 You can click the checkbox below the price to have them included Liftmaster Safety Sensors kit (used on 1997-current units)one side has amber led other side has green led units attach to brackets by head of carriage bolt (they do not have a bolt hole through them) units measure appx 1-1/4" long w/3 feet 2-conductor wire See video for help selecting the proper eyes. Liftmaster Safety Sensors kit (used on 1997-current units)one side has amber led other side has green led units attach to brackets by head of carriage bolt (they do not have a bolt hole through them) units measure appx 2-3/8 " long w/3 feet 2-conductor wire