LiftMaster 2245, 2255, 3245, 3255 Chain Parts
LiftMaster 2245, 2255, 3245 and 3255 Replacement Parts
This page covers the 2245, 2255, 3245 and 3255 chain drive openers. Everything for them is here: the motor unit, the gear and sprocket, the rail and chain, 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.
Motor runs but the door does not move? On these openers that is almost always the gear and sprocket assembly — the nylon gear strips. It is part 041C4220A, also listed as 41A2827, and we stock it in both factory and aftermarket versions. See section 2.
1. Motor Unit
First part of number below corresponds to diagram number above:
| Ref | Part # | Description |
|---|---|---|
| 01 | K031D0380M | Sprocket cover |
| 02 | 041C4220A | Gear and sprocket assembly — also listed as 41A2827 |
| 03 | 041A2817 | Gear kit |
| 04 | 041B4245-1 | Line cord, 6 ft |
| 06 | 041C0279 | Light socket |
| 09 | K012A0373 | Capacitor bracket |
| 13 | 041A2818 | Limit switch drive and retainer |
| 14 | 041D3452 | Limit switch assembly |
Also fits these openers
These parts are shared across the LiftMaster chain drive range and fit the 2245, 2255, 3245 and 3255 as well.
| Ref | Part # | Description |
|---|---|---|
| — | K030B0532-1 | Capacitor — current replacement |
| — | 041D3058 | Universal replacement motor and bracket assembly, 1/2 HP |
| — | 041D5563 | Motor, 3/4 HP |
| — | 041C4246 | Wire harness, 1993 to current |
| — | 041A3150 | Terminal block with screws |
| — | K108D0034 | Light lens — two light operators, sold individually |
| — | K108D0036-2 | Light lens — one light operators |
| — | 041A5484 | End panel |
| — | 041D3452-2 | Limit switch kit |
| — | 041A4208-2 | Chain spreader with screws |
| — | 041A2825 | Opener assembly hardware kit |
Two motor options. The 041D3058 is 1/2 HP, the 041D5563 is 3/4 HP. Check the horsepower on your motor unit label and order to match.
Logic boards for this generation are discontinued. The 41A5021 family of receiver logic boards is no longer manufactured and we do not stock a replacement. If your board has failed, call (866) 965-5599 before ordering anything else — we can tell you whether a repair is still worth doing. Not sure a part on this page fits your unit? Call and we will confirm it against your model number first.
2. Gear and Sprocket — Factory or Aftermarket
The nylon gear on the 041C4220A is the most common failure on these openers, and the part fits most LiftMaster chain drives. You may see it called 41A2827 — it is the same assembly. If the motor runs and the door does not move, this is what to order. We stock both the genuine LiftMaster assembly and a lower cost aftermarket version built to the same dimensions.
| Part # | Description | Factory (OEM) | Aftermarket |
|---|---|---|---|
| 041C4220A | Gear and sprocket assembly, aka 41A2827 | Factory assembly | Aftermarket assembly |
Fit the new gear with the opener disconnected from the door, and grease the worm before reassembly — running it dry is what strips the next one. The 041A2817 gear kit is the alternative if only the gear itself has failed.
3. Rail, Chain and Trolley
First part of number below corresponds to diagram number above:
| Ref | Part # | Description | Fits |
|---|---|---|---|
| 01 | 004A1008 | Master link kit | All |
| 03 | 041A4813 | Cable pulley bracket | All |
| 04 | 041A3489 | Trolley assembly | All |
| 05 | 041D3484 | Chain assembly | 7 ft door |
| 05 | 041D3483 | Chain assembly | 8 ft door |
| 05 | 041D3485 | Chain assembly | 10 ft door |
| 06 | 83A11-2 | Rail grease | All |
| 11 | K144C0056 | Idler pulley | All |
| 16 | 041B0035B | Curved door arm | All |
| 17 | 4178B0034B | Straight door arm section | All |
| — | 041A8094 | Door arm kit — curved and straight sections together | All |
The chain assembly is sized to your door height. Measure the door opening, not the rail. A slack chain can usually be re-tensioned rather than replaced — replace it if links are stiff, the cable is frayed, or the chain has jumped the sprocket. Browse all chain and master links.
Complete rail assemblies
| Ref | Part # | Description | Fits |
|---|---|---|---|
| — | 1707LM | One piece T rail | 7 ft door |
| — | 1708LM | Complete chain drive rail assembly | 8 ft door |
| — | 3707CH | Chain I beam rail system | 7 ft door |
| — | 3708CH | Chain I beam rail system | 8 ft door |
| — | 3710CH | Chain I beam rail system | 10 ft door |
4. 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 |
5. Remotes, Wall Controls and Door Hardware
First part of number below corresponds to diagram number above:
| Ref | Part # | Description | Fits |
|---|---|---|---|
| 01–02 | 893MAX | 3 button visor remote — universal replacement for all older remotes | All |
| 03 | 10A20 | 3V coin battery for the remote | All |
| 05 | 10A14 | 12V battery — 61LM series remotes | 61LM |
| 06 | 041B4494-1 | 2 conductor bell wire, 26 ft | All |
| 07 | 041A4353 | Header bracket, 1993 to current | All |
| 08 | 041A5047 | Door bracket | All |
| 09 | 041A2828 | Manual release rope and handle assembly | All |
| 10 | 29C128 | Remote visor clip | All |
| 11 | 29B137 | Remote visor clip — 700 and 800 series remotes | 700, 800 |
| 12 | 041A4166 | Lighted pushbutton, two wire | All |
| 13–15 | 041C0494-2 | Multi-function door control panel | Pre-1998 |
| 13–15 | 889LM | MyQ control panel | 1998 on |
| — | 041A4202-6B | Wall control panel, two wire | All |
| — | 041A2770-17 | Installation hardware kit | All |
| — | 041A3504 | Antenna extender kit | All |
| — | 041A3504-1 | Antenna extender kit with adapter | All |
| — | L6950 | Multi purpose spray lube, green | All |
| — | L6960 | Multi purpose spray lube, blue | All |
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 |
|---|---|---|
| 041C0494-1 | 041C0494-2 | Multi-function door control panel, superseded |
| 41C494 | 041C0494-2 | Soft glow wall control panel, no longer available |
| 98LM | 889LM | Motion detecting control panel, discontinued, 1998 and newer |
| 398LM | 889LM | Control panel, discontinued, 1998 and newer |
| 888LM | 889LM | Control panel, discontinued, 1998 and newer |
More LiftMaster Parts
All chain drive rail parts · Chain and master links · All LiftMaster opener parts · LiftMaster remote controls