The LiftMaster 41A4813 garage door opener chain pulley bracket from Garage Door Supply Co. is a one-piece replacement garage door chain pulley bracket for many LiftMaster, Chamberlain and Craftsman residential operators with T-rails. Confirm compatibility with your specific model opener for this part, also known as part no. 041A4813. Many LiftMaster, Chamberlain and Sears Craftsman parts are interchangeable because they are made by the same company (Chamberlain).Product Highlights: