This is a Chain Pulley Bracket Replacement Kit. For use with various LiftMaster® and Chamberlain® Chain Drive Garage Door Openers that utilize a T-rail. Check the manual or replacement parts diagram for specific part information before ordering to ensure compatibility.

Genuine LiftMaster® replacement part.

Also known as:

041A3420, 41A4813, 41B4813, 41A3420