Liftmaster 81550 Parts
LiftMaster 81550 Replacement Parts
Genuine replacement parts and repair components for the LiftMaster 81550 belt drive garage door opener. Use the diagram above and the part-number tables below to identify the exact component you need. Click any part number to view or order that part.
Garage Door Opener Assembly Parts
| Ref | Part Number | Description |
|---|---|---|
| 1 | 041A4371 | Sprocket cover |
| 2 | 041A4885-4 | Gear and sprocket |
| 3 | 041A2817 | Drive and Worm Gear |
| 4 | 041A8393 | Front end panel with all labels |
| 5 | 041C0279 | Light socket |
| 6 | K108D0079M | Light lens |
| 7 | 030B0532-1 | Capacitor |
| 8 | K012A0373 | Capacitor bracket |
| 9 | 041D7440 | Universal motor |
| 10 | 041D7742-7 | Travel module |
| 11 | 041D9018 | Cover |
| 12 | 050ACTBMC | Logic board |
| 13 | 041D0239-1 | Logic Board End Panel |
| 14 | 041B4245-1 | Line cord |
| — | 041A7946 | Wire Harness |
| — | 041A3150 | Terminal block |
Rail Assembly Parts
| Ref | Part Number | Description |
|---|---|---|
| 1 | 041A5434-11A | Belt - for 7 foot door |
| 1 | 041A5434-13A | Belt - for 8 foot door |
| 1 | 041A5434-14A | Belt - for 10 foot door |
| 2 | 041B5424 | Belt Pulley Bracket |
| 3 | 004A1008 | Master link |
| 4 | 2777BD | One-Piece Rail 7 feet (2.1 m) |
| 4 | 2778BD | One-Piece Rail 8 feet (2.4 m) |
| 4 | 2770BD | One-Piece Rail 10 feet (3 m) |
| 5 | 041B3869-3A | Trolley Assembly (Master Link, Clevis Pin, Ring, Belt Clip, Threaded Shaft, Tensioner Assembly) |
| 6 | 041B4103 | Tensioner Assembly |
| 7 | 041A6689 | Trolley Threaded Shaft |
Installation Parts
| Ref | Part Number | Description |
|---|---|---|
| 1 | 041B0035B | Curved door arm |
| 2 | 041A5047-1 | Door bracket with clevis pin and fastener |
| 3 | 041A2828 | Emergency release rope and handle |
| 4 | 041A4353-1 | Header bracket with clevis pin and fastener |
| 5 | K029B0137 | Remote control visor clip |
| 6 | 041-0155-000 | Safety sensor bracket |
| 7 | 041-0136 | Safety sensor kit with receiving and sending sensors with 3 feet (.9 m) 2-conductor wire |
| 8 | 4178B0034B | Straight door arm |
| 9 | 041B4494-1 | White and red/white wire |
| 10 | K010A0020 | 3V CR2032 lithium battery |
| 11 | 041A5281-1 | Extension bracket (optional) |
| — | 041A2770-6 | Installation hardware bag |
| — | 114-5711-010 | User's Guide |
Accessories
| Ref | Part Number | Description |
|---|---|---|
| 1 | 882LMW | Multi-function control panel |
| 2 | 893LM | 3-button remote control |