Liftmaster 041A5658, GEAR AND SPROCKET KIT
The LiftMaster 041A5658 is a gear and sprocket replacement kit for select chain drive opener heads, especially the 3/4 HP style units commonly associated with LiftMaster 2595, 3595, and 3595S models. The gear and sprocket assembly is the link between the opener motor and the chain rail, so wear in this section can stop the door from moving even when the motor still runs.
This kit is a practical repair part for an opener that has stripped gears, worn bushings, noisy operation, or a damaged sprocket shaft. A correct repair should also include checking why the original gear failed. A heavy door, overtightened chain, dry rail, damaged trolley, or misadjusted limits can overload the gear assembly and shorten the life of the replacement.
Compatible With
- LiftMaster 2595 chain drive garage door opener, when the parts diagram calls for 041A5658
- LiftMaster 3595 chain drive garage door opener, when the parts diagram calls for 041A5658
- LiftMaster 3595S chain drive garage door opener, when the parts diagram calls for 041A5658
- Select 3/4 HP LiftMaster / Chamberlain chain drive openers using this gear and sprocket assembly
Features & Specifications
| Manufacturer | LiftMaster / Chamberlain Group |
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| Product Type | Gear and sprocket replacement kit |
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| Part Number | 041A5658 |
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| Application | Select chain drive garage door opener gear repair |
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| Compatible Operator Type | Select 3/4 HP AC chain drive openers |
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| Included Components | Gear and sprocket service components; kit contents may include drive gear, worm gear, bearing plate, retainers, washers, roll pins, grease, and instructions depending on packaging |
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Also Known As / Related Part Numbers
Technician Note
Do not assume 041A5658 and 041A5658-1 are interchangeable. Confirm the exact suffix and opener model before ordering because related gear kits can fit different chain drive generations.
Before Ordering
- Confirm model 2595, 3595, 3595S, or another listed compatible model
- Compare the old gear and sprocket assembly to the replacement kit
- Check chain tension and door balance before installing
- Inspect the opener chassis for wear around the sprocket shaft
Important Ordering Warnings
- Do not use on belt drive or screw drive openers
- Do not substitute a similar gear kit without matching the parts diagram
- A stuck or heavy garage door can damage the replacement gear quickly
- Unplug the opener before servicing the drive assembly
Professional Advisory
If the opener has repeated gear failures or the door is difficult to lift manually, a garage door technician should inspect the spring balance, rollers, rail, and opener setup before the new gear kit is installed.
Product Questions & Answers
Which models are most commonly associated with 041A5658?
Strong compatibility references include LiftMaster 2595, 3595, and 3595S chain drive garage door openers.
Is 041A5658 the same as 041A5658-1?
No. They are related gear kit numbers but should not be treated as automatic replacements for each other.
What signs point to a stripped gear?
Common signs include white gear shavings, a motor that runs without moving the door, sprocket wobble, or a chain that does not move correctly.
Should I replace the chain at the same time?
Only if the chain is damaged, stretched, or matched to a separate chain and cable kit. The gear kit itself is for the opener head drive assembly.
Why did the original gear fail?
Common causes include normal wear, a heavy door, poor door balance, chain tension issues, or rail/trolley binding.
