Liftmaster K75-18367, DRIVE ASSEMBLY KIT
The LiftMaster K75-18367 is a drive assembly kit used on the SW490GL commercial swing gate operator. The drive assembly is a heavy mechanical section of the operator that handles movement transfer from the motor/gear train to the gate arm system. When this part wears or fails, the gate may move unevenly, bind, make abnormal noise, or fail to transfer power cleanly to the gate leaf.
This kit should be treated as SW490GL-specific unless the LiftMaster parts diagram confirms another use. It is not the same as the arm assembly kits for SW420 or SW470, and it is not a replacement motor by itself. If the previous drive assembly failed, inspect the full gate system for hinge drag, missing physical stops, oversize gate load, wind exposure, and incorrect limits before returning the operator to normal service.
Compatible With
- LiftMaster SW490GL swing gate operators
- SW490GL drive assembly applications where the parts diagram calls for K75-18367
- Not a direct substitute for SW420 arm kits, SW470 arm kits, LA400 actuator parts, or LA500 arm assemblies
Features and Specifications
| Manufacturer | LiftMaster |
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| Product Type | Drive assembly kit |
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| Part Number | K75-18367 |
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| Application | Mechanical drive assembly replacement |
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| Compatible Operator Type | LiftMaster SW490GL swing gate operator |
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| Included Components | Drive assembly components as supplied by kit |
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| Notes | Some references note motor not included; verify kit contents |
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Also Known As / Related Part Numbers
- K75-18367
- 75-18367
- LM-K75-18367
- SW490GL drive assembly kit
- Drive assembly kit motor not included
Technician Note
Match this replacement part to the original part number, operator model, and parts diagram. LiftMaster and Elite service parts often look similar across operator families, but small differences in mounting, wiring, generation, voltage, or mechanical layout can make them non-interchangeable.
Before Ordering Checklist
- Confirm the operator model and model suffix on the nameplate.
- Compare the existing part number, Q number, or old reference number when available.
- Review the operator parts diagram for the exact assembly location.
- Check for damage that may have caused the original part to fail, such as water intrusion, gate binding, worn chain, loose hardware, or incorrect wiring.
- For electrical parts, confirm voltage, control-board generation, grounding, and accessory wiring before installation.
Professional Advisory
Gate operator repairs can involve heavy moving gates, stored mechanical force, high voltage, and required entrapment protection devices. Do not bypass safety sensors, edge devices, interlocks, or emergency release requirements. When wiring, grounding, high-voltage diagnosis, or unsafe gate movement is involved, have the system serviced by a qualified gate technician.
Product Questions and Answers
Which operator uses K75-18367?
K75-18367 is commonly listed for the LiftMaster SW490GL swing gate operator.
Does this kit include the motor?
Some references describe the kit as a drive assembly kit with motor not included. Confirm kit contents before ordering.
Is this the same as an arm assembly kit?
No. This is a drive assembly kit for SW490GL, not the same as SW420 or SW470 arm assembly kits.
What symptoms can indicate drive assembly trouble?
Grinding, binding, loose movement, failure to transfer power, or visible damage in the operator drive area can point to drive assembly issues.
What should be checked before replacing it?
Check gate hinges, stops, gate size/weight, clutch/limit setup, and whether the operator has been damaged by impact or overload.
