Liftmaster 75-G0400X, COLLAR
The LiftMaster 75-G0400X is a replacement collar for the SW490GL swing gate operator. Although it is a small part, the collar helps position and secure a mechanical section of the operator assembly. When a collar is worn, missing, or incorrectly installed, the operator may develop slippage, alignment issues, spring-related problems, or inconsistent movement.
This part is commonly used during SW490GL mechanical service where the existing collar is damaged or when the operator is being rebuilt. It should be ordered by part number and parts diagram, especially because the related 75-G0401X double swing collar looks similar but is not automatically the same application. The installer should also inspect the spring and shaft area for wear before replacing the collar.
Compatible With
- LiftMaster SW490GL swing gate operators
- Select SW490 swing gate operator configurations when the parts diagram calls for 75-G0400X
- Single swing collar applications in SW490GL mechanical assemblies
- Not the same as 75-G0401X double swing collar unless the parts diagram confirms the application
Features and Specifications
| Manufacturer | LiftMaster / Chamberlain Group |
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| Product Type | Mechanical collar |
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| Part Number | 75-G0400X |
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| Application | SW490GL swing gate operator mechanical assembly |
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| Compatible Operator Type | Swing gate operator |
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| Wire Size Reference | .192 orange, where listed by supplier |
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| Spring Length Reference | 17.750, where listed by supplier |
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Also Known As / Related Part Numbers
- 75-G0400X
- 75-G0400
- G75G0400
- LM-75-G0400X
- Single swing collar
- SW490GL collar
Technician Note
Check the surrounding shaft, spring, and fastener condition when replacing the collar. A worn collar can be a symptom of a larger alignment or spring issue.
Before Ordering
- Confirm the operator is SW490GL or supported SW490 configuration
- Verify whether the diagram calls for 75-G0400X or 75-G0401X
- Inspect the spring and shaft area for wear
- Confirm related numbers 75-G0400 or G75G0400 if cross-referencing
- Do not file, drill, or modify the collar to force fitment
Professional Advisory
Mechanical collar replacement should be performed with the gate secured and the operator disabled so the swing gate cannot move unexpectedly during service.
Product Questions and Answers
What is 75-G0400X used on?
It is commonly listed for LiftMaster SW490GL swing gate operator collar applications.
Is 75-G0400X the same as 75-G0401X?
No. 75-G0401X is commonly referenced as the double swing collar, so the parts diagram should be checked.
What related numbers are used for this part?
75-G0400 and G75G0400 are commonly listed as related numbers.
Why should the spring area be inspected?
A damaged or loose collar can be related to spring or shaft wear, so nearby parts should be checked.
Can I modify the collar to fit?
No. Do not drill, file, or modify the collar. Use the correct part for the operator.
