LiftMaster 041B2616 Sheave Bracket and Cable Pulley Assembly
The LiftMaster 041B2616 is a sheave bracket and cable pulley style replacement kit used on select residential opener rail assemblies. It is also commonly referenced as 41B2616 and 12B371.
What This Part Does
This bracket supports the pulley/sheave area that guides the cable or chain path through compatible rail systems. A worn or damaged bracket can cause noisy travel, cable misalignment, rough trolley movement, or rail-end wear.
Compatible With
The 041B2616 is used with select Chamberlain, LiftMaster, and Craftsman residential garage door openers that use compatible rail assemblies. Match the part to the rail diagram before ordering.
Common Compatible Applications
- Select LiftMaster residential chain drive rail assemblies
- Select Chamberlain residential chain drive rail assemblies
- Select Craftsman openers built on compatible Chamberlain/LiftMaster rail platforms
- Select T-rail style opener assemblies using 041B2616 / 12B371 style bracket hardware
Fitment Notes
- May be described as a sheave bracket, cable pulley bracket, or door bracket depending on listing
- Not for every chain drive rail
- Not for belt drive or screw drive rails unless the exact parts diagram calls for this number
Features & Specifications
| Feature / Specification | Details |
|---|
| Manufacturer | LiftMaster / Chamberlain |
| Product Type | Sheave Bracket / Cable Pulley Bracket Assembly |
| Part Number | 041B2616 |
| Related Numbers | 41B2616, 12B371 |
| Application | Rail-end pulley and bracket replacement |
| Compatible Operator Type | Select residential chain drive and compatible rail assemblies |
| Includes | Bracket assembly components; package contents may vary by listing |
| Notes | Match to rail assembly 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.
- 041B2616
- 41B2616
- 12B371
- Sheave bracket
- Cable pulley bracket assembly
- Front pulley bracket
- Door bracket kit
Technician Note
Inspect the rail, cable, chain, trolley, and bracket mounting points before replacing this part. A seized pulley or bent bracket can damage the cable path, but a stretched chain, worn trolley, or misaligned rail can create similar symptoms.
Before Ordering, Confirm
- The parts diagram lists 041B2616, 41B2616, or 12B371.
- The rail assembly style matches the original bracket.
- The opener uses a compatible chain/cable rail arrangement.
- The trolley, cable, chain, and rail are not excessively worn.
- The door is balanced and not causing abnormal rail load.
Professional Advisory
Disconnect power before servicing rail pulley hardware. After replacement, check chain/cable tension, opener travel, door balance, and safety reversal operation before normal use.
Important Ordering Warnings
- Not a universal pulley bracket for all garage door openers.
- Do not use on belt drive or screw drive rails unless specifically confirmed.
- A worn pulley can be related to rail misalignment or door balance problems.
- Package descriptions may vary, so match by part number and diagram.
Questions & Answers
What is 041B2616 used for?
It is used as a sheave bracket or cable pulley bracket assembly on select compatible garage door opener rail systems.
Is 12B371 related to 41B2616?
Yes. 12B371 is commonly listed as a related number for the 041B2616 / 41B2616 bracket kit.
Does this fit all chain drive openers?
No. It fits select rail assemblies only and should be matched to the opener parts diagram.
What symptoms can a bad pulley bracket cause?
It can cause noise, rough trolley movement, cable or chain misalignment, and visible wear at the rail end.
Should the chain or cable be inspected too?
Yes. Check the chain, cable, trolley, rail, and door balance so the replacement bracket is not damaged by another problem.
