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.
| 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 |
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.
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.
LiftMaster lists K081C0275 for models 3130 and 3240.
Related numbers include 081C0275 and 81C275.
No. K081C0275 is for 3130 and 3240, while K081C0168 is listed for other screw drive applications and not for 3130/3240.
It works with the screw drive rail system to move the carriage during opener operation.
Inspect the carriage, rail, lubrication condition, and door balance before returning the opener to service.