CONFIRM THE PART FITS
Part Information
This spring and trolley nut (part number 41B4103-1) is for garage door openers.
Spring and trolley nut 41B4103-1 maintains tension on the trolley for smooth operation when opening or closing the door.
Unplug the garage door opener before installing this part. Wear work gloves to protect your hands.
Top models using the same part
| Model Name | Model Number | Diagram Name |
|---|---|---|
| Model #13953918D Craftsman garage door opener | 13953918D | Rail assembly |
| Model #13953939D Craftsman garage door opener | 13953939D | Rail assembly |