LiftMaster 29B129 Belt Connector Replacement Part

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LiftMaster's 29B129 Belt Connector Replacement Part is for use with LiftMaster and Chamberlain Belt Drive Garage Door Operators. 29B129 Belt Connector Replacement Parts are required when it is necessary to shorten an older style garage door belt on units manufactured from 1995 to 2007. This belt connector is one of two pieces required to complete the belt retainer clip, and is also known by the SKUs: K029B0129, 029B0129. Check the owner's manual or replacement parts diagram for specific part information before ordering to ensure compatibility.


  • LiftMaster 29B129 Belt Connector Replacement Part

  • Shorten older style garage door belts manufactured between 1995 and 2007

  • 1 of 2 pieces required: works with the 29B130 Belt Connector Clip

  • Alternate SKUs: K029B0129, 029B0129