LiftMaster 2585 & 3585 Belt Drive Parts
LiftMaster 2585 and 3585 Replacement Parts
The 2585 and 3585 are belt drive openers running the 20 rib 41A5434 belt. Everything for them is on this page: the motor unit, the belts, the safety sensors, the door hardware, the wall control and the remote. Each section has its own diagram, and the reference numbers are specific to the diagram directly above them.
Ordering a belt? The belt is sized to your door height, not your rail. Both models use the 20 rib 41A5434 belt, stocked in factory and lower cost aftermarket versions. See the belt table below, or use the full LiftMaster belt selector if you are not sure which you need.
1. Motor Unit
First part of number below corresponds to diagram number above:
| Ref | Part # | Description |
|---|---|---|
| 01 | 041A4371 | Belt cap retainer |
| 02 | 041A4885-5 | Gear and sprocket assembly |
| 03 | 041A2817 | Gear kit |
| 05 | 041B4245-1 | Line cord, 6 ft |
| 05 | 41D5484 | End panel with all labels |
| 06 | 041C0279 | Light socket |
| 07 | K108D0079M | Light lens |
| 08C | 041A5637 | Resistor |
| 09 | 041A3150 | Terminal block with screws |
| 10 | 041D5563-1 | Universal replacement motor and bracket assembly |
| 13 | 041D3452 | Limit switch assembly |
| 14 | 041A5532 | Gear case |
| 15 | 041A2822-1 | Interrupter cup |
| 16 | 041C4398A | RPM sensor assembly |
| 17 | 041AC075-2S | Receiver logic board assembly — current replacement |
| 18 | 041C5588 | High voltage wire harness |
| 19 | 041D0180-1 | End panel |
Ref 05 covers two parts — the line cord and the end panel. Refs 04, 11 and 12 are not stocked separately, and the ref 18A low voltage wire harness (041C5587) is no longer available.
Replacing the logic board? The original boards for these openers — 41A5635 and 41AB075-2 — are both discontinued, as is the 41AC075-2A that replaced them. The current board is the 041AC075-2S, listed at ref 17 above. If the number on your old board is not one of these, call (866) 965-5599 with it and we will confirm the right replacement before you order.
2. Belts
Both models take the 20 rib 41A5434 belt. Measure your door opening height, not the rail. We stock the genuine LiftMaster belt and a lower cost aftermarket belt built to the same length, rib pitch and end fittings — the aftermarket belt typically runs about a third of the factory price and installs identically.
| Door Height | Belt | Factory (OEM) | Aftermarket |
|---|---|---|---|
| 7 ft | 41A5434-11 | Factory belt | Aftermarket belt |
| 8 ft | 41A5434-13 | Factory belt | Aftermarket belt |
| 10 ft | 41A5434-14 | Factory belt | Aftermarket belt |
A belt rarely fails on its own. Check the belt pulley bracket, trolley and tensioner while the rail is apart — see all belt drive rail parts.
3. Safety Sensors and Brackets
First part of number below corresponds to diagram number above:
Current parts — order these
| Ref | Part # | Description |
|---|---|---|
| S1–S2 | 041-0136 | Safety sensor eye kit — sending and receiving eyes, supplied as a matched pair |
| S3–S4 | 041A5281-1 | Sensor extension brackets |
| — | 041-0155-000 | Safety sensor brackets, 2021 to present |
| — | 041B0873 | Sunblocker bracket — stops sunlight false-tripping the eye |
| — | Sensor Guards | Protective guards, sensors not included |
| — | 041B4494-1 | 2 conductor bell wire, 26 ft |
Superseded part numbers
The current eyes and brackets replace every earlier version, so there is no need to match your old part number — order the current part.
| Old Part # | Order Instead | Notes |
|---|---|---|
| 41A5034 | 041-0136 | Eye kit used 1997 onward, now superseded |
| 12B484 | 041A5281-1 | Square holed mounting bracket, discontinued |
| 12B485 | 041A5281-1 | Slotted mounting bracket, discontinued |
| 041A5266-1 | 041-0155-000 | Sensor mounting bracket, no longer available |
4. Remotes, Wall Controls and Door Hardware
First part of number below corresponds to diagram number above:
| Ref | Part # | Description |
|---|---|---|
| 01–02 | 893MAX | 3 button visor remote — universal replacement for all older remotes |
| 03 | 10A20 | 3V coin battery for the remote |
| 05 | 10A14 | 12V battery — 61LM series remotes |
| 06 | 041B4494-1 | 2 conductor bell wire, 26 ft |
| 07 | 041A4353 | Header bracket, 1993 to current |
| 07 | 041A4353-1 | Header bracket, black — belt drive units |
| 08 | 041A5047 | Door bracket |
| 08 | 041A5047-1 | Door bracket, black — belt drive units |
| 09 | 041A2828 | Manual release rope and handle assembly |
| 10 | 29C128 | Remote visor clip |
| 11 | 29B137 | Remote visor clip — 700 and 800 series remotes |
| 12 | 041A4166 | Lighted pushbutton, two wire |
| 13–15 | 889LM | MyQ control panel — the replacement on 1998 and newer openers |
| 16 | 041B0035B | Curved door arm |
| 17 | 4178B0034B | Straight door arm section |
| — | 041A4202-6B | Wall control panel, two wire |
| — | 041A8094 | Door arm kit — curved and straight sections together |
| — | 041A2770-17 | Installation hardware kit — bolts, staples, grease, release cord |
| — | 041A3504 | Antenna extender kit |
| — | 041A3504-1 | Antenna extender kit with adapter |
| — | L6950 | Multi purpose spray lube, green |
| — | L6960 | Multi purpose spray lube, blue |
Remote controls
The original remotes for these openers are discontinued. The 893MAX is the universal replacement and works with all the older LiftMaster, Chamberlain and Craftsman openers. It covers 371LM, 971LM, 973LM and 893LM, and is the listed substitute for 81LM, 83LM, 63LM, 753CB, 850CB, 853CB, 953CB, 953EV and Craftsman 53680, 53859 and 53879. Browse all LiftMaster remote controls.
Wall controls — superseded part numbers
| Old Part # | Order Instead | Notes |
|---|---|---|
| 98LM | 889LM | Motion detecting control panel, discontinued |
| 398LM | 889LM | Control panel, discontinued |
| 888LM | 889LM | Control panel, discontinued |
More LiftMaster Parts
Belt drive rail and belt parts · All LiftMaster opener parts · LiftMaster remote controls