The LiftMaster 041C6551 is a one-piece passpoint and travel module replacement kit for select LiftMaster DC motor screw drive garage door openers. The module is part of the opener travel system, helping the control board track where the door is during open and close movement. When the original module fails, the opener may have trouble learning limits, may stop before completing travel, or may act like it cannot reliably find the open and close positions.
This part is most closely associated with LiftMaster Model 3840 and related DC motor screw drive units that list 041C6551 in the parts diagram. It should not be used as a substitute for universal DC chain/belt travel modules, wall mount encoder kits, or commercial gate passpoint kits unless the exact service documentation supports it.
Compatible With
Use this kit only when the opener documentation calls for the 041C6551 / 41C6551 passpoint kit. Common references include:
- LiftMaster Model 3840 screw drive garage door opener
- Select LiftMaster DC motor screw drive garage door openers
- Chamberlain/LiftMaster-family screw drive models where the parts list specifies 041C6551
- Residential screw drive openers with the matching passpoint/travel module design
Features & Specifications
| Manufacturer | LiftMaster / Chamberlain |
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| Product Type | Passpoint / travel module kit |
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| Part Number | 041C6551 |
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| Application | Travel position feedback service part |
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| Compatible Operator Type | Select DC motor screw drive garage door openers |
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| Model References | Model 3840 and related screw drive applications when confirmed by parts diagram |
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| Included Components | One-piece passpoint / travel module kit |
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| Notes | Not a universal travel module for belt, chain, wall mount, or gate operators |
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Also Known As / Related Part Numbers
- 041C6551
- 41C6551
- C6551
- Passpoint kit
- Travel module kit
- Model 3840 passpoint kit
Technician Note
Before replacing the travel module, confirm the door moves smoothly by hand and that the rail, carriage, and screw drive components are not binding. A mechanical problem can mimic a travel module issue.
Before Ordering Checklist
- Confirm the opener is Model 3840 or another supported DC screw drive model
- Match the part number 041C6551 or 41C6551 in the parts diagram
- Do not confuse this with 041D8071-4, 041B8861, or other travel modules
- Inspect the screw drive rail and carriage for binding
- Reprogram travel only after the mechanical door and opener parts are safe to operate
Professional Advisory
Travel setup affects door stopping points and force behavior. If the door reverses unexpectedly, binds, or will not balance by hand, stop troubleshooting and call a qualified garage door technician.
Product Questions & Answers
What does the 041C6551 passpoint kit do?
It is part of the opener travel-position system, helping compatible screw drive openers track open and close travel.
Is this the correct kit for LiftMaster Model 3840?
Model 3840 is the main compatibility reference for 041C6551, but the opener parts diagram should still be checked before ordering.
Can this replace a wall mount travel module?
No. Wall mount openers use different travel module or encoder kits, such as 041B8861 on supported models.
Does this fix every limit problem?
No. Limit or travel issues can also come from a binding door, rail issue, carriage problem, wiring fault, or control board issue.
Is 41C6551 the same part family?
Yes. 41C6551 is the common non-leading-zero reference for the 041C6551 passpoint kit.
