LiftMaster Idler Sprocket Kit - K74-40346

Details

LiftMaster Idler Sprocket Kit - K74-40346

The Liftmaster K74-40346 Idler Sprocket Kit is used to keep the drive chain aligned and under tension in SL920 slide gate systems. This sprocket acts as a non-powered support that ensures the chain follows its correct path without sagging or misalignment. Over time, idler sprockets can wear or seize, causing performance issues. This OEM kit is a direct-fit replacement that restores proper chain tracking.

Specifications

• Model: K74-40346
• Use: Chain guidance and tensioning
• Compatibility: LiftMaster SL920
• Type: Idler sprocket assembly