Chamberlain WD912K, WD922K & HD600 Parts
Chamberlain WD912K, WD912KS, WD922K and HD600 Replacement Parts
These are square rail belt drive openers. Their belt, rail and trolley are square rail specific and will not interchange with the T-rail parts used on most belt drives. This parts list covers all four models:
- WD912K
- WD912KS
- WD922K
- HD600
Ordering a belt? These openers take the 041A5250 square rail belt, sized to your door height — 7, 8 or 10 ft. Measure the door opening, not the rail.
1. Garage Door Opener Repair Parts
First part of number below corresponds to diagram number above:
| Ref | Part Number | Description |
|---|---|---|
| 01 | 041A4371 | Belt cap retainer |
| 02 | 041A4885-5 | Gear and sprocket assembly |
| 03 | 041A2817 | Gear kit |
| 04 | 041B4245-1 | Line cord, 6 ft |
| 05 | 041A5484 | End panel with all labels |
| 06 | 041C0279 | Light socket |
| 07 | K108D0079M | Light lens |
| 08 | K030B0532-1 | Capacitor |
| 09 | K012A0373 | Capacitor bracket |
| 11 | 41C4842 | Universal replacement motor and bracket assembly |
| 11–12 | 41A5525-4 | Cover — no longer available |
| 13 | 041A2818 | Limit switch drive and retainer |
| 13 | 041D3452 | Limit switch assembly |
| 15 | 041A2822-1 | Interrupter cup |
| 16 | 041C4398A | RPM sensor assembly |
| 17 | 041AB050-2M | Receiver logic board assembly — current replacement |
| 17 | 41A5483-4B | Receiver logic board assembly — no longer available |
| 18 | 041C5499 | High voltage wire harness |
| 18a | 041C5500 | Low voltage wire harness |
| 19 | 041D0180-1 | End panel |
| — | 041A2770-17 | Installation hardware kit |
Logic board — order the 041AB050-2M. The original 41A5483-4B is discontinued and the 041AB050-2M replaces it. Read the number printed on the board you are removing to confirm, and call (866) 965-5599 if it is neither. The cover (41A5525-4) is discontinued with no replacement — the opener runs perfectly safely without it, but we cannot supply one.
If the motor runs and the door does not move, that is the gear and sprocket assembly at ref 02 — the nylon gear strips. Grease the worm before fitting the new one; running it dry is what strips the next.
2. Belt and Square Rail
| Ref | Part Number | Description |
|---|---|---|
| 06 | 041A5250 | Full belt assembly — 7 ft door |
| 06 | 041A5250-1 | Full belt assembly — 8 ft door |
| 06 | 041A5250-2 | Full belt assembly — 10 ft door |
| — | 041A5665 | Square rail assembly |
| — | 041C5141-2 | Complete trolley assembly, square rail |
| — | 041D0598-1 | U bracket, square rail |
| — | K144C0054M | Belt idler pulley |
| — | 041B4103 | Belt tensioner assembly |
| — | 041A7276 | Wear pads |
| — | 004A1008 | Master link kit |
A belt rarely fails on its own. Check the idler pulley, trolley, tensioner and wear pads while the rail is apart — worn pads let the trolley rock in the rail and will chew through a new belt in months. See all Chamberlain belt and rail parts.
3. Safety Sensors and Brackets
| Ref | Part Number | Description |
|---|---|---|
| — | 041-0136 | Safety sensor eye kit — replaces 41A5034 |
| — | 041-0155-000 | Safety sensor brackets, 2021 to present |
| — | 041-0365-000 | Sensor eyes and brackets — the complete set |
| — | 041B0873 | Sunblocker bracket — stops sunlight false-tripping the eye |
| — | 041B4494-1 | 2 conductor bell wire, 26 ft |
The current 041-0136 eye kit replaces the older 41A5034 and fits Chamberlain and LiftMaster openers alike — both brands are built by the same manufacturer. If your brackets are bent or missing too, the 041-0365-000 includes eyes and brackets together.
4. Door Hardware and Remotes
| Ref | Part Number | Description |
|---|---|---|
| — | 041B0035B | Curved door arm |
| — | 4178B0034B | Straight door arm section |
| — | 041A8094 | Door arm kit — curved and straight sections together |
| — | 041A5047-1 | Door bracket with clevis pin and fastener |
| — | 041A5047-3 | Header bracket — square rail |
| — | 041A2828 | Emergency release rope and handle |
| — | 893MAX | 3 button remote control — universal replacement |
| — | 041C0494-2 | Multi-function door control panel |
These are square rail openers, so they take the 041A5047-3 header bracket — the standard header brackets will not fit. The 893MAX replaces every older Chamberlain, LiftMaster and Craftsman remote. Browse all Chamberlain remote controls.
More Chamberlain Parts
All Chamberlain opener parts · Belt drive belts and rail parts · Chamberlain remote controls