Master Mechanic
Garage Door Opener

The Master Mechanic garage door opener was a private label brand made by Chamberlain's Liftmaster garage door opener division.

Sears Craftsman, Access Master, Garage Master, Master Mechanic, Formula 1, Security+, Link, Billion Code, True Value, True Guard, and Raynor are all manufactured by Chamberlain's Liftmaster division and parts are interchangeable.

Master Mechanic Garage Door Opener Safety Beam Kit

Liftmaster 41A5034 Garage Door Opener Safety Beam Kit

The 41A5034 sensors include a pair of sensors(sending and receiving), about 12" of wire attached to each sensor, wire connectors to splice wire into existing wire, mounting screws to mount to brackets, and instructions.

If your opener has not had sensors, the 41A5 034 senors can not be installed to your opener.



Master Mechanic 41C4220A Gear & Sprocket Assembly Kit

41C4220A Sears Craftsman Liftmaster Gear & Sprocket Assembly Kit

Compatible with Chain Drive Chamberlain Manufactured operators 1984-current

Includes: Gear and Sprocket, Worm Gear, Grease, Motor Shaft Bearings, Sprocket Bearings,Instructions

Compatible with fail safe units from Liftmaster, Chamberlain, Craftsman, Sears, Master Mechanic and Wayne Dalton.



Liftmaster 81LM-850CB Remote Control Transmitter

Liftmaster 81LM/850CB Remote Control Transmitter

The Liftmaster 81LM is compatible with Liftmaster, Chamberlain, Master Mechanic, and Sears Craftsman garage door openers with a green learn button on the back of your opener.(1993-1997) Billion code smart button remote controls that replace models with green LED indicator lights.

The Liftmaster 81LM replaces: Liftmaster part numbers-81LM, 82LM, 83LM, 84LM, 96LM Chamberlain part numbers-850CB, 853CB, 959CB, 856CB Sears craftsman part numbers-139.53879, 139.53859, 139.53779, 139.53759,not all included. Wayne Dalton part number-81WD Liftmaster 81LM includes: remote, battery, visor clip and instructions.



Liftmaster 63LM Garage Door Remote

Liftmaster 63LM 9 Dip Switch Garage Door Remote

Order the Chamberlain Sears Craftsman Liftmaster 63LM if:

  • You have a Chamberlain opener(Sears, Master Mechanic, Liftmaster)
  • Your current remote has 8 or 9 three position switches
  • Your motorhead has 8 or 9 three position switches
  • 63LM includes: Remote, Battery, Visor Clip, Instructions


LiftMaster 41A2817 Replacement Gear Kit

LiftMaster 41A2817 Replacement Gear Kit

LiftMaster replacement Gear Kit assembly for ALL 1984-Current garage door opener operators.

Compatible with all fail safe units from LiftMaster, Chamberlain, Sears Craftsman, Master Mechanic and Wayne Dalton.

Includes gear, plastic worm wheel, Lubriplate grease and all necessary washers and hardware. Original manufacturer replacement part.

The entire tube of included grease needs to be applied at installation or new drive gear will shred within days-see included instructions.



Liftmaster 63LM 9 Dip Switch Remote

Liftmaster 63LM 9 Dip Switch Remote

The 63LM 3 button transmitter for Sears/Lift-master and Chamberlain openers.

9 DIP switches to code in Chamberlain unit.

Lift-master compatible models: 51LM, 53LM, 54LM, 61LM, 62LM, 64LM. Chamberlain compatible models: 750CB, 753CB, 756CB. Sears compatible models: 139.53707, 139.53758, 139.53778, 139.53515, 139.53606, 139.65843.

Not all models listed.



Liftmaster 83LM Billion Garage Door Remote Transmitter

Liftmaster 83LM Billion Garage Door Remote Transmitter

The Liftmaster 83LM is compatible with Liftmaster, Chamberlain, Master Mechanic, and Sears Craftsman garage door openers with a green learn button on the back of your opener.(1993-1997)

Billion code smart button remote controls that replace models with green LED indicator lights.

Includes battery, visor clip, and instructions.



SkyLink 200 Master Mechanic Garage Door Remote

SkyLink 200 Master Mechanic® Garage Door Remote

SkyLink 200 Master Mechanic® Garage Door Remote

The world's smallest visor-mount remote.

Fits in most car remote housing. Easy to carry or clip on sun visor.

Works with most Lift-Master®, Sears®, Wayne Dalton®, Master Mechanic®, and Chamberlain® Garage Door Openers (from 1983-1997).

Operates at 390MHz. Operating range of 100 feet and more. One year warranty.

Battery included. Note : Model 200 is not compatible with "Security +®" manufactured by Chamberlain®, LiftMaster®, Craftsman®.


Sears Craftsman Billion Code Wireless Keypad 66LM

Sears Craftsman Billion Code Wireless Keypad 66LM

Order the Chamberlain Liftmaster Sears 66LM if:

  • You have a green learn button on motor head under the light cover
  • Compatible with billion code systems with the red or green LED light
  • 66LM Includes: battery and instructions

Garage door opener wireless keypad model 66LM (Green Learn Button).

Compatible with Chamberlain billion code systems with the green LED light, including Chamberlain, Sears, Craftsman, Master-Mechanic, Wayne Dalton and Tru Value



SkyLink 89 Universal Garage Door Opener Keyless Entry System

SkyLink 89 Universal Garage Door Opener Keyless Entry System

Operates most national brand garage door openers up to 2007 (see compatibility chart).

Wireless system that provides the convenience of entry into your garage without the use of a remote or keys. Standard soft-key back-lit keypad. Two 3V lithium batteries included. 1-year warranty.

Compatibility Chart for Model 89 Brands Chamberlain® 1983-2002 390MHz Genie® / Mastercraft® 1983-2007 390MHz Lift-Master® 1983-2002 390MHz Linear® (DT) 1975-2007 310MHz Linear® MegaCodeTM 1985-2007 318MHz Master Mechanic® 1983-1997 390MHz Moore-O-Matic® (Delta 3) 1983-2007 310MHz Multi-Code® (10 pos) 1976-2007 300MHz/310MHz Overhead®* 1983-1997 390MHz Pulsar® / Allister® 1985-2007 318MHz Sears® / Craftsman® 1983-2002 390MHz Skylink® UR100 Receiver 1990-2007 390MHz Stanley® (10 pos) 1976-2007 300MHz/310MHz Wayne Dalton® 1983-1997 300MHz/390MHz


Liftmaster Garage Door Opener Replacement Circuit Board 41A5021-5E

Liftmaster Garage Door Opener Replacement Circuit Board 41A5021-5E

Replacement Logic/Circuit board (receiver board) for Security+ operators.

Compatible with Liftmaster Security+ Chamberlain, Sears Craftsman, Master Mechanic, Wayne Dalton.


Liftmaster Garage Door Opener Replacement Circuit Board for Security+ Systems

Liftmaster Replacement Circuit Board for Security+ Systems

Replacement Logic/Circuit board (receiver board) for ALL Security+ operators (no light socket).

For Liftmaster garage door opener operator models 985, 1240R, 1245R, 1246R, 1255R and 1256R.

For Chamberlain garage door opener operator models 4200, 2200 and 1200.

Replaces logic board models 41A5021-1, 41A5021-1B, 41A5021-1C, 41A5021-1D, 41A5021-1E.

Compatible with Security+ systems from Chamberlain, Craftsman,Master Mechanic, Sears & Wayne Dalton.


Liftmaster 41A4252-7D Logic Board

Liftmaster 41A4252-7D Logic Board

Replacement Logic/Circuit board for standard Liftmaster operators (non code rolling).

Not for Security+ systems.

Also compatible with non Security+ systems from Chamberlain, Craftsman, Master Mechanic, Sears, Tru-Value and Wayne Dalton.



Liftmaster 41C4677 Garage Door Opener Screw-Drive Carriage

Liftmaster 41C4677 Garage Door Opener Screw-Drive Carriage

Replacement Trolley (carriage) for ALL 1995-current screw drive garage door opener operators.

Compatible with screw drive units from Liftmaster, Chamberlain, Crafstman, Sears, Master Mechanic and Wayne Dalton - (1995-Current).

Original manufacturer replacement part



Chamberlain Corp Mm Multi Transmitter 953Mmd

Chamberlain Corp Mm Multi Transmitter 953Mmd

Master Mechanic Garage Door Opener Security Plus Multi-Function Transmitter

3 Channel Remote Control, Rolling Code Technology With 315 MHZ Frequency.

Opens 1, 2 Or 3 Garage Doors.

Compatible With Master Mechanic & Chamberlain Security Plus Garage Door Openers.

Operates With One 12V Battery, Included.




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