Liftmaster K75-18493, CHAIN GUIDE KIT
The LiftMaster K75-18493 is a chain guide kit used on pre-2016 SL575, SL585, and SL595 commercial/industrial slide gate operators. The chain guides help keep the drive chain running in the proper path through the operator. Worn or missing guides can allow the chain to rub the chassis, jump, slap, or wear unevenly, which can create noise and shorten the life of the chain and sprockets.
This kit is commonly tied to old part number 13-3510 and is separate from the larger chain guard kit or idler shaft kit. Pre-2016 fitment is important because later UL-series operators may use different chain guard and guide hardware. Before ordering, compare the existing guide shape, operator model suffix, and parts breakdown.
Compatible With
- LiftMaster SL575 slide gate operators manufactured prior to 2016
- LiftMaster SL585 slide gate operators manufactured prior to 2016
- LiftMaster SL595 slide gate operators manufactured prior to 2016
- Select GL-style SL575 / SL585 / SL595 applications when the parts diagram calls for K75-18493
- Not automatically compatible with newer UL-series chain guard assemblies
Features and Specifications
| Manufacturer | LiftMaster |
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| Product Type | Chain guide kit |
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| Part Number | K75-18493 |
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| Application | Drive chain alignment and guide replacement |
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| Compatible Operator Type | Pre-2016 SL575, SL585, and SL595 slide gate operators |
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| Included Components | Commonly listed as 2 chain guides plus hardware |
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| Notes | Verify pre-2016 operator generation and guide style |
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Also Known As / Related Part Numbers
- K75-18493
- 75-18493
- 13-3510
- 133510
- LM-K75-18493
- Chain guide kit
- SL575 chain guide
- SL585 chain guide
- SL595 chain guide
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 operators use K75-18493?
It is commonly listed for pre-2016 LiftMaster SL575, SL585, and SL595 slide gate operators.
What old part number is related to this chain guide kit?
Old part number 13-3510 is commonly listed as a related number for K75-18493.
Is this a full chain guard kit?
No. It is a chain guide kit. Chain guards, retainers, chains, and sprockets may be separate parts.
What happens when chain guides are worn?
The chain may rub, slap, run out of alignment, wear sprockets faster, or create extra noise during travel.
Will this fit newer UL-series operators?
Not automatically. Newer UL-compliant SL-series models may use different chain guide and guard parts, so verify the parts diagram.
