LiftMaster K15-41B17LKGH Output Sprocket — CSL24-Series Gate Operator

The LiftMaster K15-41B17LKGH is the output sprocket identified in the CSL24UL manufacturer service diagram and described by the supplier for CSL24V applications. It belongs to the operator’s gate-drive chain arrangement and must match the installed output shaft and chain path. This is a different component from the motor and gear-reducer pulleys, the chain idler and the smaller travel-feedback drive parts. Confirm the exact operator revision and service number before ordering a replacement.

Compatibility — Models, Versions and Exclusions

Confirm the Sprocket Position and the Condition of the Drive

Identify the output sprocket in the operator drawing before ordering. The same machine contains several rotating parts with different functions, and a catalog image may not show the shaft interface clearly. Compare the complete part number, position and retention arrangement rather than choosing by approximate diameter or appearance.

Inspect chain wear, alignment, shaft condition and the associated mounting hardware during the repair. A new sprocket cannot correct a damaged shaft or an incorrectly aligned chain path. The gate should also move smoothly without the operator having to overcome binding. Use the manufacturer’s adjustment procedure after installation; excessive chain tension is not a repair for worn or mismatched drive components.

Specifications and Product Identification

Before Ordering

• Record the complete operator model and locate the output sprocket in its diagram.
• Match K15-41B17LKGH and inspect the existing shaft interface.
• Check chain, idler, alignment and retention hardware for wear or damage.
• Confirm the required chain length and any separate replacement links before ordering.

Package Contents and Separate Requirements

This offer identifies the output sprocket. A length of chain, master link, shaft, gear reducer, pulley set or complete drive assembly is not promised as included. Confirm any key and retaining hardware supplied with the current service package. Parts located nearby in the operator drawing are separate purchasing decisions unless the supplier explicitly includes them.

Safety Warnings — Read Before Installation or Service

• WARNING: A moving gate and exposed output chain and sprocket can cause serious injury. Installation and service require a qualified gate-systems technician.
• Isolate AC power, batteries and any solar supply as applicable, and secure the gate against unexpected movement before work begins.
• Keep people clear of the gate and drive during supervised testing. Never bypass required entrapment-protection devices or increase force to overcome a mechanical fault.
• Restore all covers and guards, then verify travel endpoints, reversal and every required safety device before returning the gate to normal operation.

Related Products and Important Differences

• #41 roller chain, 10-foot length — compare the chain specification and required length for the complete drive; not included with this service part.
• #41 master link — a separate joining component for the matching chain; it does not establish sprocket or shaft fit.

Frequently Asked Questions

Can any #41 sprocket replace it?

No. The chain family is only one selection factor. The exact shaft interface, hub and retention arrangement must also match.

Is this the motor pulley?

No. The motor and gear-reducer pulley set has a separate service reference.

Is a new chain included?

Chain and master links are separately identified components; confirm the supplier package before assuming inclusion.

Can a worn shaft be reused with the new sprocket?

Have the technician assess it. A replacement sprocket does not repair damaged shaft engagement or retention features.

Need Help Confirming the Right Product?

Contact Garage-DoorParts.com before ordering. Send the full equipment model, readable part labels and photographs of the installed assembly. Include the dimensions, electrical configuration or accessory details relevant to your project so the listing can be checked against the actual installation.