LiftMaster K07-8005 Crank Link for Barrier Gate Operators
The LiftMaster K07-8005 is a crank link used in the linkage assembly of select LiftMaster barrier gate operators. The crank link connects moving crank components so the operator can transfer mechanical motion to the barrier arm. This part may be needed when the linkage is bent, worn at the pivot holes, loose, or damaged after a barrier arm strike. Because barrier operator linkage geometry directly affects arm travel and limit positioning, the crank link should be selected by the parts diagram and original part number. Do not assume that crank links from BG770, BG790, or other barrier operators are interchangeable unless the diagram confirms it.
Compatible With
- Various LiftMaster barrier gate operators and perimeter access solutions where the parts diagram calls for K07-8005, 07-8005, or G078005. Confirm exact model because BG770 and BG790 linkage parts differ by callout.
Compatibility should be verified by the operator model number, original part number, and replacement-parts diagram. LiftMaster barrier and commercial gate operator parts often look similar across model families but may use different shafts, collars, hubs, link geometry, or mounting hardware.
Features & Specifications
| Manufacturer | LiftMaster / Chamberlain Group |
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| Product Type | Crank link replacement |
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| Part Number | K07-8005 |
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| Application | Barrier gate operator arm linkage |
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| Compatible Operator Type | Select LiftMaster barrier gate operators and perimeter access systems |
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| Material / Finish | Heavy-duty linkage component |
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| Related Numbers | 07-8005, G078005 |
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| Notes | Verify operator model and linkage callout before ordering |
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Also Known As / Related Part Numbers
- K07-8005
- 07-8005
- G078005
- LiftMaster crank link
- barrier gate crank link
Technician Note
Before replacing this part, check the surrounding mechanical assembly for looseness, worn pivot points, damaged shafts, missing set screws, bent linkage, or signs of a gate or arm impact. Replacing one worn part without correcting the cause can lead to repeat failure.
Before Ordering Checklist
- Match the manufacturer part number and any older Q/G/07-series number to the original part or parts diagram.
- Confirm the operator model, series, and mechanical assembly location before ordering.
- Inspect adjacent shafts, cranks, bearings, fasteners, and linkage hardware for damage or wear.
- Do not order by appearance only; similar LiftMaster mechanical parts may not interchange.
Important Ordering Warnings
- A damaged crank link can be part of a larger impact repair. Check the arm hub, cranks, shaft, and arm hardware.
- Do not substitute the K07-8058 BG790 crank link for K07-8005 unless the parts diagram specifically allows it.
Professional Advisory
Mechanical gate and barrier operator repairs should be performed with the operator secured and power disconnected by a qualified gate technician. If the operator has impact damage, binding, unsafe movement, or high-voltage wiring exposure, have the full system inspected before returning it to service.
Product Q&A
What does the K07-8005 crank link do?
It connects crank components in a barrier gate operator linkage assembly so the barrier arm can raise and lower smoothly.
Which operators use this crank link?
It is listed for select LiftMaster barrier gate operators and perimeter access systems where the parts diagram calls for K07-8005.
Are 07-8005 and G078005 related part numbers?
Yes, both numbers are commonly listed as related or alternate numbers for K07-8005.
Can a worn crank link cause noisy operation?
Yes. Loose pivot holes, worn hardware, or a bent link can create noise, uneven travel, and linkage binding.
Is this the same as K07-8058?
No. K07-8058 is a separate crank link commonly tied to BG790 applications. Confirm the exact part number before ordering.
