LiftMaster 85502 Replacement Parts
Genuine replacement parts for the LiftMaster 85502 belt drive garage door opener — a DC unit with battery backup. This page also covers the 85502-267, which is the same opener supplied with an extra remote and keypad. Each section below has its own diagram and its own numbering starting at 1, so match the section name as well as the reference number.
Garage Door Opener Repair Parts
| Ref |
Part Number |
Description |
| 1 |
041C0589-2 |
Sprocket and sprocket cover with screws — no longer available |
| 2 |
041A7618 |
End panel with battery cover and light socket |
| 3 |
041A7562 |
Light lens |
| 4 |
041C0279 |
Light socket |
| 5 |
041D0277-1 |
Transformer |
| 6 |
041-0132-000 |
Cover — not currently stocked. Note the 85504 uses a different cover, 041-0127-000 |
| 7 |
041D8006-1 |
Motor with travel module. Now supplied as the 041-0236-000 |
| 8 |
041D8071-4 |
Travel module |
| 9 |
041D0216-2 |
End panel and light socket |
| 10 |
050DCTBLK |
Receiver logic board, lock capable. This is the 85502's board — the 85504 takes the 050DCTB instead |
| 11 |
485LM |
Backup battery, 12V |
| — |
041B4245-1 |
Line cord (not shown) |
| — |
041A3150 |
Terminal block (not shown) |
| — |
041D9204 |
Wire harness (not shown) |
Rail Assembly Parts
The rail and belt both come in three lengths. Match the length to your door height — a 7 ft door takes the 7 ft rail and the 7 ft belt.
| Ref |
Part Number |
Description |
| 1 |
041A5434-11A |
Belt — 7 ft (2.1 m) door |
| 1 |
041A5434-13A |
Belt — 8 ft (2.4 m) door |
| 1 |
041A5434-14A |
Belt — 10 ft (3 m) door |
| 2 |
041B5424 |
Belt pulley bracket |
| 3 |
004A1008 |
Master link |
| 4 |
G2777 |
One-piece rail — 7 ft (2.1 m) door |
| 4 |
G2778 |
One-piece rail — 8 ft (2.4 m) door |
| 4 |
G2770 |
One-piece rail — 10 ft (3 m) door |
| 5 |
041B3869-3A |
Trolley assembly. Includes master link (2), clevis pin, ring, belt clip, threaded shaft and 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. Replaces the 041A5266-3 shown on the diagram, which is no longer available |
| 7 |
041-0136 |
Safety sensor kit, receiving and sending sensors with 3 ft 2-conductor wire. Replaces the 041A5034 shown on the diagram |
| 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 (not shown) |
Accessories
These two are what the 85502-267 package added over the base 85502.
| Ref |
Part Number |
Description |
| 1 |
880LMW |
Smart Control Panel |
| 2 |
893LM |
3-button remote control. The 893MAX is the universal replacement |
Superseded Part Numbers
| Ref |
Number on diagram |
Order this instead |
| Opener 7 |
041D8006-1 |
041-0236-000 DC motor and travel module |
| Install 6 |
041A5266-3 |
041-0155-000 sensor brackets |
| Install 7 |
041A5034 |
041-0136 safety sensor kit |
85502 or 85504? Same chassis, same rail, same installation parts — but three parts differ. The 85502 takes the 041-0132-000 cover, the 050DCTBLK board and the 041D9204 harness. The 85504 takes the 041-0127-000 cover, the 050DCTB board and the 041-0042 harness, and it adds a camera and decorative cover. Check the model number on the front panel before ordering refs 6 or 10.
