Chamberlain Belt Drive models B730 B740 parts
Chamberlain B730 & B740 Replacement Parts
Genuine replacement parts and repair components for the Chamberlain B730 and B740 belt drive garage door openers with battery backup. 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 Repair Parts
| Ref | Part Number | Description |
|---|---|---|
| 1 | 041C1751 | Belt Cap and Sprocket Kit |
| 2 | 041D0207 | End Panel |
| 3 | 041-0144 | Light Lens |
| 4 | 041C0279 | Light Socket Kit |
| 5 | 041D0277-2 | Transformer |
| 6 | 041D8810 | Cover |
| 7 | 041-0236-000 | Motor with Travel Module, DC |
| 8 | 041D8214 | End Panel |
| 9 | 050DCTBMC | Logic Board, Bluetooth Enabled |
| 10 | 041D8071-4 | Travel Module Kit, Universal DC |
| 11 | 041A3150 | Terminal Block |
| 12 | 041B4245-1 | AC Power Cord, 6' |
| 13 | 4228 | Backup Battery, 12V |
| — | 041D8255 | Wire Harness Kit |
Rail Assembly Parts
| Ref | Part Number | Description |
|---|---|---|
| 1 | 041A5250 | Belt, 7' |
| 2 | K144C0054M | Belt Idler Pulley |
| 3 | 004A1008 | Chain, #48, Master Link |
| 4 | 041A5665 | Rail Kit, 7' |
| 5 | 041C5141-2 | Square Rail Trolley Kit |
| 6 | 041D0598-1 | U Bracket Adapter |
| 7 | 041A6689 | Threaded Shaft, D-Shape |
| 8 | 041B4103 | Belt Tensioner Kit |
| — | 041A7276 | Trolley Wear Pads |
| — | K083A0011-1 | Lithium Rail Grease |
| — | 041A7920-2 | Hardware Kit |
Installation Parts
| Ref | Part Number | Description |
|---|---|---|
| 1 | 041B0035B | Curved Door Arm |
| 2 | 041A5047-1 | Door Bracket |
| 3 | 041A2828 | Emergency Manual Release Rope |
| 4 | 041A5047-2 | Header Bracket |
| 5 | K029B0137 | Remote Control Visor Clip |
| 6 | 041-0155-000 | Safety Sensor Bracket Kit |
| 7 | 041-0136 | Safety Sensor Kit |
| 8 | 4178B0034B | Straight Door Arm |
| 9 | 041B4494-1 | White/Red Bell Wire |
| 10 | K010A0020 | 3V CR2032 Lithium Battery |
| 11 | K012B0776 | Hanging Bracket Kit |