Liftmaster 1345, 1355
Use our illustrated parts guide to find the replacement parts you need for your LiftMaster 1345 or LiftMaster 1355 garage door opener. Our parts guide lets you see what the parts look like and where they fit when you use our online schematic at Garage Door Supply Company. Use your mouse to hover over a part to view the part number that's compatible with your chain drive residential garage door opener. Then, scroll down to the parts list to click on the number for price, description and compatibility information. Enjoy free tech support from our knowledgeable staff.
LiftMaster Motor Assembly Parts:
| Key | Part Number / Item Name |
| 1 | 31D380 Sprocket cover |
| 2 | 41C4220A Gear and sprocket assembly |
| 3 | 41A2817 Drive/worm gear kit w/grease |
| 4 | 41B4245 Power cord |
| 5 | 143D100 End panel w/All Labels (Not Available) |
| 6 | 4A1344 Light socket |
| 7 | 108D36 Lens Light Bulb Cover |
| 8 | 30B363 Capacitor - 1/3HP |
| 30B532 Capacitor - 1/2HP | |
| 9 | 12A373 Capacitor bracket |
| 10 | 41A3150 Terminal block w/screws |
| Key | Part Number / Item Name |
| 11 | 41D3058 Replacement motor & bracket |
| 12 | 41A3583-11 Motor Cover |
| 13 | 41A2818 Limit drive gear & retainer |
| 14 | 41D3452 Limit switch assembly |
| 15 | 41C4398A RPM sensor assembly |
| 16 | 41C4246 Wire harness assembly w/plug |
| 17 | 41A2826 Shaft bearing Kit (Not Available) |
| 18 | 41A2822A Interrupter cup assembly |
| 19 | 41A5021-1M-315 Receiver logic board assy |
| 20 | 41A5014-3 End panel w/All Labels (Not Available) |
LiftMaster Chain Drive Rail Assembly Parts:
| Key | Part Number / Item Name |
| 1 | 4A1008 Master Link Kit |
| 2 | 41A4813 Chain Pulley Bracket |
| 3 | 41A3489 Trolley Assembly |
| 4 | 183B99 One piece T-rail Assembly (Not Available) |
| Key | Part Number / Item Name |
| 5 | 41D3484 Full Chain Assembly 7' Door |
| 41D3483 Full Chain Assembly 8' Door | |
| 41D3485 Full Chain Assembly 10' Door | |
| 6 | 83A11-2 Rail Grease AeroLube |
Installation Parts:
| Key | Part Number / Item Name |
| 7 | 41A5047 Door Bracket |
| 8 | 41A4353 Header Bracket |
| 9 | 41A4373A Safety Sensor Kit |
| 10 | 178B34 Straight Door Arm |
| 11 | 178B35 Curved Door Arm |
| 12 | 41A6569 Safety Sensor Brackets |