The LiftMaster K41-0258-000 is an idler bracket replacement kit for the LiftMaster INSL24UL and IHSL24UL industrial slide gate operator series. The idler bracket is part of the drive chain support and alignment area, so it matters for smooth chain travel, proper tension, and reliable operation. This kit is commonly ordered when the original bracket is bent, worn, damaged, or being replaced during chain drive service. Because chain alignment problems can damage other parts, the operator should be inspected as a complete drive system, not just as one bracket.
This product page is written for buyers replacing a known LiftMaster part number, not for guessing from appearance alone. Many LiftMaster gate operator parts look similar across generations, so the safest ordering method is to match the part number from the original component, the operator parts diagram, or the model-specific service manual.
The chain and idler area can move with significant force. Service should be performed with the operator secured and powered down, and all covers and guards should be reinstalled after adjustment.
It replaces the idler bracket assembly area on select LiftMaster INSL24UL and IHSL24UL industrial slide gate operators.
Yes. A damaged or misaligned idler bracket can contribute to chain tracking issues, noise, excessive wear, and travel problems.
No. It is associated with the INSL24UL and IHSL24UL series. Other slide operators may use different idler hardware.
