Liftmaster 12A373 Capacitor Bracket
The LiftMaster 12A373 capacitor bracket is a replacement bracket used to secure the motor capacitor inside select LiftMaster and Chamberlain garage door openers. It is commonly referenced by the updated service number K012A0373.
Common Application
This bracket is commonly associated with select LiftMaster and Chamberlain belt drive and chain drive garage door opener motor housings.
When This Part Is Usually Ordered
- Original capacitor bracket is missing or damaged
- Capacitor is loose inside the opener housing
- Service parts diagram lists 12A373, 12A373C, 012A0373, or K012A0373
- Opener is being repaired after capacitor or motor service
Features & Specifications
| Feature / Specification | Details |
|---|
| Manufacturer | LiftMaster / Chamberlain |
| Product Type | Capacitor mounting bracket |
| Part Number | 12A373 |
| Updated / Service Part Number | K012A0373 |
| Application | Capacitor support inside select opener motor housings |
| Compatible Operator Type | Select LiftMaster and Chamberlain chain drive and belt drive openers |
| Notes | Mounting hardware may vary by operator model |
Also Known As / Related Part Numbers
Technician Note
The bracket only secures the capacitor; it does not correct a failed capacitor, weak motor, or electrical fault. Match the bracket to the parts diagram and handle capacitor-related service with proper safety precautions.
Before Ordering
- Confirm the parts diagram lists 12A373 or K012A0373
- Compare the bracket shape to the original part
- Check whether original mounting hardware is reusable
- Inspect the capacitor leads for damage before reassembly
- Use a qualified technician for capacitor testing, motor diagnosis, or unsafe electrical conditions
Professional Advisory
Garage door opener capacitors can store energy after power is removed. Avoid unsafe electrical handling and use a qualified technician when capacitor or motor diagnosis is required.
Product Questions & Answers
What does the LiftMaster 12A373 bracket do?
It holds the motor capacitor in position inside compatible LiftMaster and Chamberlain opener housings.
Is 12A373 the same as K012A0373?
Yes. K012A0373 is the updated service number commonly associated with the 12A373 capacitor bracket.
Does this bracket include a capacitor?
No. This part is the capacitor mounting bracket only. The capacitor is a separate component.
Can a loose capacitor cause noise inside the opener?
Yes. A loose capacitor or loose bracket can cause rattling and may place strain on wiring inside the motor housing.
Is this part safe for DIY replacement?
The bracket itself is mechanical, but capacitor areas can involve stored electrical energy. Use a qualified technician if electrical diagnosis or capacitor handling is needed.
