The LiftMaster 041A6312 Rail End Bracket Kit is a replacement bracket used on select LiftMaster and Chamberlain screw drive garage door opener rail systems. It is commonly referenced for 3130 and 3240 screw drive model applications.
What This Part Does
This bracket supports the rail end connection and helps keep the screw drive rail properly positioned. A damaged rail end bracket can affect rail alignment, carriage travel, and the stability of the opener rail assembly.
Compatible With
The 041A6312 is used with select screw drive garage door openers. Compatibility should be confirmed by opener model, rail style, and parts diagram.
Common Compatible Models
- LiftMaster 3130 screw drive openers when confirmed by parts diagram
- LiftMaster 3240 screw drive openers when confirmed by parts diagram
- Select Chamberlain screw drive garage door openers using the same rail bracket kit
- Select related LiftMaster screw drive rail assemblies
Important Fitment Notes
- For screw drive garage door opener rail systems
- Not for chain drive rail assemblies
- Not for belt drive rail assemblies
- Rail hardware may vary by model year and rail package
Features & Specifications
| Feature / Specification | Details |
|---|
| Manufacturer | LiftMaster / Chamberlain |
| Product Type | Rail End Bracket Kit |
| Part Number | 041A6312 |
| Related Number | 41A6312 |
| Application | Screw drive rail bracket replacement |
| Compatible Operator Type | Select LiftMaster and Chamberlain screw drive garage door openers |
| Common Model References | 3130 and 3240 when confirmed by parts diagram |
| Notes | Confirm rail style and original parts list before ordering. |
Also Known As / Related Part Numbers
This item may be searched under several related LiftMaster, Chamberlain, or Craftsman part number formats. Related numbers should be matched against the original part and the opener parts diagram before ordering.
- 041A6312
- 41A6312
- LiftMaster rail bracket kit
- LiftMaster rail end bracket
- 3130 rail bracket
- 3240 rail bracket
- Screw drive rail bracket
Technician Note
Check the rail and screw drive carriage before replacing this bracket. If the rail is twisted, the carriage rack is worn, or the opener is running against a binding door, a new bracket may not correct the underlying problem.
Before Ordering, Confirm
- The opener is a compatible screw drive model.
- The original parts diagram lists 041A6312 or 41A6312.
- The rail end shape matches the existing bracket.
- The screw drive carriage and rail are not damaged.
- The door moves freely and the rail is aligned with the header bracket.
Professional Advisory
Rail bracket work should be done with the opener disconnected from power and the door secured. Do not operate the opener with loose rail hardware, a damaged bracket, or a misaligned screw drive rail.
Important Ordering Warnings
- Not for belt drive opener rails.
- Not for chain drive opener rails.
- Do not use if the rail itself is bent or damaged.
- Incorrect rail hardware can cause noise, binding, and carriage travel problems.
Questions & Answers
What opener style uses the 041A6312 bracket?
The 041A6312 is used on select screw drive garage door opener rail systems, commonly including LiftMaster 3130 and 3240 models when confirmed by parts diagram.
Is this a complete rail assembly?
No. This is a rail end bracket kit, not a full screw drive rail or carriage assembly.
Can this bracket be used on a belt drive opener?
No. It is intended for select screw drive rail systems and should not be used on belt drive opener rails.
What symptoms point to a damaged rail end bracket?
Loose rail movement, poor rail alignment, unusual carriage travel, or a visibly cracked or bent bracket can indicate the bracket needs replacement.
What else should be inspected with this part?
Inspect the screw drive rail, carriage, header bracket, hanging brackets, and door balance before replacing only the rail end bracket.
