LiftMaster Chamberlain K081C0168 Screw Drive Carriage Rack

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LiftMaster's 81C168 is a garage door screw drive carriage rack designed for LiftMaster and Chamberlain screw drive garage door assemblies. The 81C168 works exclusively with LiftMaster trolley carriage 41C4677. The Carriage Rack and trolley install together on the garage door rail to connect the door arm and the operator.


  • LiftMaster 81C168 garage door screw drive carriage rack

  • For LiftMaster and Chamberlain Screw Drive Operators

  • Works with carriage trolley 41C4677

  • Compatible replacement for Chamberlain 81C275 and K081C0168

  • Not Compatible with Models 3130 or 3240

  • Also known as: 081C0168, K081C0168