LIFTMASTER Garage Door Openers 19-41ML Master Link Kit 19-41ML Master link for LiftMaster and Chamberlain Brand garage door openers. Compatible with LiftMaster garage door opener Estate Series chain drivemodels 2565, 2575, 3575, 2595, 3595 (all models may not be listed). Compatible with LiftMaster garage door opener Estate Series belt drive models 2580, 2585, 3585, 2500, 3500, 2500B, 2500D (all models may not be listed). Includes one master link assembly. Older part numbers 41A1008, 4A1008.