LiftMaster 144B0041M 22-Tooth Motor Pulley 1-1/2 Inch OD
The LiftMaster 144B0041M is a 22-tooth motor pulley used on select LiftMaster and Chamberlain screw drive garage door openers. It is commonly searched as 144B41 and is identified by its 1-1/2 inch outside diameter and 1/2 inch bore. It is not interchangeable with the larger 144B42 pulley.
Common Applications
- Motor pulley replacement on select screw drive garage door openers
- Applications that call for 144B0041M, 144B0041, or 144B41
- Service work involving worn pulley teeth, slippage, noise, or uneven travel
- Older screw drive opener models where this exact pulley size is shown in the parts diagram
Features & Specifications
| Feature / Specification | Details |
|---|
| Manufacturer | LiftMaster / Chamberlain Group |
| Product Type | Motor pulley |
| Part Number | 144B0041M |
| Related Part Numbers | 144B0041, 144B41 |
| Tooth Count | 22T |
| Dimensions | 1-1/2 inch outside diameter, 1/2 inch bore |
| Application | Select screw drive garage door openers |
| Important Difference | Not the same as 144B0042 / 144B42 28T 2 inch OD pulley |
| Status Note | Manufacturer information lists 144B0041M as discontinued |
Also Known As / Related Part Numbers
- 144B0041M
- 144B0041
- 144B41
- 22T pulley
Technician Note
Pulley tooth count and outside diameter matter. A 22T 144B41-style pulley should not be replaced with a 28T 144B42-style pulley unless the opener parts diagram specifically calls for that different part.
Before Ordering
- Count the teeth on the old pulley before ordering.
- Measure the outside diameter and bore if the old pulley is still available.
- Confirm the opener parts diagram calls for 144B0041M, 144B0041, or 144B41.
- Inspect the belt, shaft, and set screw area for wear or damage.
- Do not substitute 144B0042 / 144B42 unless the diagram specifically calls for it.
Professional Advisory
Unplug the opener before servicing drive components. If the rail, belt, screw drive, or motor shaft is damaged, replacing the pulley alone may not correct noise or travel problems.
Product Questions & Answers
Is 144B0041M the same as 144B41?
Yes. 144B0041M, 144B0041, and 144B41 are commonly used for the same 22-tooth pulley reference.
Is this pulley the same as 144B42?
No. 144B42 / 144B0042 is a different 28-tooth pulley with a 2 inch outside diameter. This item is the 22T, 1-1/2 inch OD pulley.
What opener type uses this pulley?
It is used on select LiftMaster and Chamberlain screw drive garage door openers when the parts diagram specifies this pulley.
What symptoms can a worn pulley cause?
A worn pulley can cause slipping, clicking, grinding, rough travel, or poor power transfer from the motor.
Why should I measure the pulley before ordering?
Small differences in tooth count, bore, and diameter can change drive operation and may prevent the opener from working correctly.
