Liftmaster 41c4220a Gear and Sprocket Kit for Chamberlain, Sears, Craftsman and LiftMaster 1/3 and 1/2 HP Chain Drive Models

Great this is a complete kit, saved me from buying a whole new system.

Identical OEM replacement. Very easy to do yourself. Save a bunch of money doing it myself instead of paying for a garage door company to come out. Works like new again. Nice and quiet door operation.

Product was as seen and had good directions for repair. Opener works like new! Very satisfied! I would recommend this product!

Great product ! Well made , just what I needed to get my garage up and running. Easy to install

It arrived sooner than I expected. It was just as described & was easy to install, it worked great.

Worked great. Door opener is working now.

Kit comes complete with what is shown plus it comes with instructions on a few of the models this kit works for. Shipped was punctual.

Our daughters garage door opener broke; my husband thought he could fix it but, with the COVID situation, did not think he could find the part locally. We ordered and had the part in two days; it worked beautifully. A++++

The holes for the mounting bolts are not threaded. The stock unit has threaded mounting holes. Make sure to use self tapping bolts, or tap the mounting holes before attempting installation. This will make installation MUCH easier. Slacking out chain tensioner all the way out will help too.

Perfect