Liftmaster K081C0275 Screw Drive Rack Replacement Kit Models 3130 & 3240
The LiftMaster K081C0275 screw drive rack is the model-specific replacement rack for LiftMaster 3130 and 3240 screw drive garage door openers. The rack is part of the rail drive system that allows the opener carriage to travel along the screw drive rail.
Rack wear can cause clicking, skipping, grinding, or inconsistent travel. On older screw drive systems, it is important to separate normal rail lubrication issues from damaged rack teeth, carriage wear, or a door that is placing too much load on the opener.
LiftMaster specifically points 3130 and 3240 applications to K081C0275. Other screw drive models may use K081C0168 instead, so this part should be ordered by model number and parts diagram, not by appearance alone.
Features & Specifications
| Feature / Specification | Details |
|---|
| Manufacturer | LiftMaster |
| Product Type | Screw drive rack replacement kit |
| Part Number | K081C0275 |
| Application | Screw drive rack replacement for LiftMaster 3130 and 3240 openers |
| Compatible Operator Type | LiftMaster screw drive garage door openers |
| Compatible Models | 3130 and 3240 |
| Related Numbers | 081C0275, 81C275 |
| Notes | Use K081C0168 for other confirmed screw drive rack applications when called out by the parts diagram |
Compatible With
Common Compatible Models
- LiftMaster 3130 screw drive garage door opener
- LiftMaster 3240 screw drive garage door opener
Important Compatibility Notes
- K081C0275 is the rack referenced for 3130 and 3240
- Do not substitute K081C0168 on 3130 or 3240 applications
- Confirm the model number on the opener head before ordering
Also Known As / Related Part Numbers
- K081C0275
- 081C0275
- 81C275
- LiftMaster 3130 screw drive rack
- LiftMaster 3240 screw drive rack
- Related alternate rack for other models: K081C0168
Technician Note
On 3130 and 3240 openers, the rack should be inspected along with the carriage and rail. A new rack may not solve the problem if the carriage is damaged or the door is dragging.
Before Ordering Checklist
- Confirm the opener model is LiftMaster 3130 or 3240
- Match the part number to K081C0275, 081C0275, or 81C275
- Inspect the carriage and screw drive rail for wear
- Confirm the rail is properly lubricated for the screw drive system
- Make sure the garage door is balanced and moves freely
Important Ordering Warnings
- This is the correct rack family for 3130 and 3240; K081C0168 should be used only for other confirmed screw drive applications.
Professional Advisory
If a screw drive opener is grinding or skipping, stop using it until the rail and rack are inspected. Continued operation can damage additional parts.
Product Questions and Answers
Which models use K081C0275?
LiftMaster lists K081C0275 for models 3130 and 3240.
What are the related part numbers?
Related numbers include 081C0275 and 81C275.
Is K081C0275 the same as K081C0168?
No. K081C0275 is for 3130 and 3240, while K081C0168 is listed for other screw drive applications and not for 3130/3240.
What does this rack do?
It works with the screw drive rail system to move the carriage during opener operation.
What should I inspect with the rack?
Inspect the carriage, rail, lubrication condition, and door balance before returning the opener to service.
