Husqvarna Sprocket Clutch Drum Assembly

You should replace the assembly if you notice deep grooves worn into the sprocket teeth, excessive play in the needle bearing, or if the chain isn't engaging smoothly. If the chain continues to spin while the engine is idling, it is often a sign that the clutch drum or bearing is failing.

Yes, this is a complete solution. It includes the drum, the integrated sprocket, and the needle bearing, so you can perform a full swap without needing to source additional components.

While this is a genuine Husqvarna part, it is also compatible with specific models from Jonsered, McCulloch, and RedMax/Zenoah. Please verify your specific model number against the Husqvarna 435/440 series, Jonsered CS2240 series, McCulloch CS410, or RedMax GZ381 to ensure a proper fit.

These specifications determine how the drum interacts with your chainsaw chain. You must match the pitch and tooth count exactly to your existing bar and chain setup; using an incorrect size will cause improper chain engagement, excessive vibration, and potential damage to your equipment.

Genuine Husqvarna parts are engineered to the exact tolerances required for your specific engine and drive system. Using this hardened steel OEM assembly ensures the precise fit and material durability necessary to handle the high-speed power transfer of your chainsaw.