SPERTEK Clutch Drum Sprocket & Bearing for Husqvarna 435/440 .325" 7-Tooth — Direct OEM Replacement 505441501

SPERTEK's clutch drum sprocket and bearing pack is a direct-fit replacement for Husqvarna .325" pitch 7-tooth clutch drums, compatible with models 435, 435E, 440 and 440E.

This replacement clutch drum sprocket and bearing set is engineered to match the form and function of Husqvarna OEM part 505441501, providing a straightforward swap when the original sprocket or bearing shows wear. It fits popular homeowner and light-professional chainsaws that use a .325" chain pitch and a 7-tooth clutch drum interface, restoring chain drive engagement and smooth rotation of the clutch assembly.

How will this part fit my Husqvarna 435 or 440 chainsaw?

The SPERTEK unit is designed to fit models that use the Husqvarna OEM number 505441501. It replaces the original clutch drum sprocket directly and installs without modification on compatible saws. Confirm the original part number or the .325" pitch and 7-tooth configuration before ordering.

• Compatible with Husqvarna 435, 435E, 440, 440E
• Direct replacement for OEM 505441501 (505 44 15-01)
• Designed for .325" chain pitch and 7-tooth clutch drums

What are the key specifications and materials to expect?

This replacement combines a toothed sprocket segment with an integrated bearing suited for clutch drum rotation. The sprocket teeth match a .325" chain pitch and there are seven teeth in total. The bearing is sized to accept the chainsaw's clutch shaft and provide smooth, reliable rotation under load.

• .325" chain pitch compatible
• 7-tooth sprocket configuration
• Includes matched bearing for the clutch drum shaft

How does installation and maintenance work for this assembly?

Installation follows standard chainsaw clutch drum replacement procedures: remove the bar and chain, free the clutch, then swap the worn drum/sprocket for the new SPERTEK unit. After installation, ensure proper torque on retaining hardware and confirm chain tension and lubrication. Periodic checks for tooth wear and bearing smoothness will extend service life.

• Install after removing bar, chain, and clutch per manufacturer instructions
• Verify retaining nut torque and correct chain tension
• Inspect teeth and bearing for wear during routine service

Will this work with Jonesered or third-party rep models?

Yes — the part is compatible with some aftermarket models that mirror Husqvarna's specifications, including chainsaws listed as Jonesered cs2240 replacements. Always compare part numbers and the .325"/7-tooth requirement to ensure proper fit across brands.

• Listed as compatible with Jonesered cs2240 replacements
• Cross-check OEM 505441501 to confirm fit
• Suitable for saws using the same clutch drum geometry

Who is this for: This SPERTEK clutch drum sprocket and bearing set is intended for homeowners, arborists, and light-contractors who need a reliable, direct-fit replacement for Husqvarna 435/440 series chainsaws or equivalent third-party models. Choose this part when the original drum sprocket shows tooth wear, chipped links, or when the bearing feels rough — it restores chain engagement and smooth clutch drum rotation without custom machining or modification.