Overview
When the sprocket teeth wear down and the drum bore enlarges from heat and friction, it is time to replace the clutch drum and sprocket kit. This aftermarket kit matches original-equipment dimensions and material specs, providing a reliable fix at a lower cost than going through the dealer. Keeping this component in good shape extends the life of your chain and bar.
Key specifications
- Pitch: 3/8”
- Teeth: 7T
- Material: hardened steel
- Type: aftermarket replacement
Compatibility
This kit is compatible with Husqvarna 455 and similar models from the same product family. Verify your chainsaw’s model number before purchasing to ensure the sprocket pitch and drum bore match your saw.
Installation notes
Remove the clutch cover, bar, and chain. Lock the piston with a stop tool and unthread the clutch (left-hand thread on most saws). Swap the old drum and sprocket for the new kit, making sure the needle bearing is seated properly. Reinstall the clutch, cover, bar, and chain. Adjust chain tension and let the saw idle briefly to confirm smooth sprocket rotation.
Common questions
Q: Will the 513470X clutch drum 3/8” 7-tooth sprocket kit fit my Husqvarna 455 Rancher?
Yes, this kit is listed as compatible with the Husqvarna 455, so it should fit that saw when it uses a 3/8” pitch setup. Before installing, confirm your chain pitch is 3/8” and that your current drum/sprocket matches the 7-tooth configuration.
Q: Can I use this 3/8” 7T sprocket kit with my 8” bar on a Husqvarna 455?
Yes, as long as your bar and chain are both set up for 3/8” pitch, this sprocket kit will match that drive system. The key fitment point is the chain pitch, not just the bar length, so make sure all three components—bar, chain, and sprocket—are 3/8”.
Q: What should I check when installing the 513470X clutch drum and sprocket kit on my Husqvarna 455?
Inspect the clutch bearing, washer, and rim/drum contact surfaces for wear and clean out any debris before reassembly. It’s also a good idea to replace a worn chain or damaged bar at the same time, because a new sprocket can wear prematurely if it’s running with badly worn drive components.
