Replace the sprocket on your commercial garage door operator's gear reducer with the LiftMaster 15-50B12QGH sprocket 80B9 for 3-horsepower operators. The gear reducer sprocket is for LiftMaster GH commercial garage door openers. Shop our low prices on all LiftMaster GH (gear head) garage door operators. Because LiftMaster, Chamberlain and Sears Craftsman parts are made by the same company, most are interchangeable with each other. Contact our staff to confirm compatibility with Chamberlain or Craftsman GH operators.
Also known as 15-50B12QGH-1
For LiftMaster GH commercial garage door operators