LiftMaster K80-38735 Vent Plug Kit for HCTDCU Overhead Gate Operators
The LiftMaster K80-38735 vent plug kit is used on HCTDCU / HCTDCUL overhead gate operator service repairs. The HCTDCU is a specialty overhead gate operator, and its mechanical housing depends on the correct plugs and service hardware to keep internal components protected while allowing the intended venting or sealing function.
This kit should be selected by operator model and parts diagram. It is not the same as the K80-36782 or K80-36783 CSL24/CSW24 vent plugs, and it should not be used as a general-purpose plug kit for every LiftMaster gate operator. Correct plug fitment helps prevent thread damage, contamination, and premature wear in the serviced assembly.
Compatible With
- LiftMaster HCTDCU overhead gate operators
- LiftMaster HCTDCUL overhead gate operators where the parts diagram calls for K80-38735
- Select HCT specialty overhead operator service repairs involving vent plug replacement
- Not a substitute for CSL24 / CSW24 vent plug parts K80-36782 or K80-36783
Features & Specifications
| Manufacturer | LiftMaster |
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| Product Type | Vent plug kit |
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| Part Number | K80-38735 |
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| Application | HCTDCU / HCTDCUL overhead gate operator service |
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| Compatible Operator Type | Specialty overhead gate operator |
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| Included Components | Vent plug kit components as supplied by LiftMaster |
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| Notes | Verify model suffix and plug location before ordering |
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Also Known As / Related Part Numbers
- K80-38735
- 80-38735
- LM-K80-38735
- LIF-K80-38735
Technician Note
If plugs are missing from an overhead gate operator, inspect the surrounding gearbox or housing for contamination before installing the new kit. Plug replacement does not correct existing lubricant or seal damage.
Before Ordering Checklist
- Confirm the operator is HCTDCU or HCTDCUL
- Verify K80-38735 in the parts diagram
- Inspect the plug port threads and housing condition
- Do not substitute CSL24 or CSW24 vent plugs
- Check for oil leakage, contamination, or water entry
Professional Advisory
HCT overhead gate operators are commercial systems with moving gate sections and monitored safety requirements. Repairs should be performed with the gate secured and safety systems tested before returning to service.
Product Questions & Answers
Which operators use K80-38735?
K80-38735 is listed as a vent plug kit for LiftMaster HCTDCU and HCTDCUL overhead gate operators.
Is this kit for CSL24 or CSW24 operators?
No. CSL24 and CSW24 use different vent plug references, including K80-36782 and K80-36783.
Why replace a vent plug kit?
Replace it when plugs are missing, damaged, contaminated, cross-threaded, or removed during service.
Can missing vent plugs damage an operator?
Yes. Missing plugs can allow dirt, water, or debris into protected mechanical areas.
Should safety devices be checked after service?
Yes. After any commercial operator service, required monitored entrapment protection devices should be checked before normal operation.
