Swess Chainsaw Clutch Cover Assembly for Husqvarna 445/450 - .325" 7T Drum, Complete Repair Kit

Swess 544097902 clutch cover assembly kit is a complete replacement bundle designed to restore clutch and sprocket function on compatible Husqvarna 445 and 450 chainsaws.

If your Husqvarna 445/450 series saw shows clutch chatter, worn sprocket teeth, or a damaged cover, this kit provides the common wear parts needed to bring that section of the powerhead back to working order without buying a whole new saw. The package contains a clutch cover, .325" 7T clutch drum, clutch, worm gear, needle bearing, and a felling dog spike so you can replace multiple interacting components in one service session.

What parts are included and why each matters?

The kit groups the parts that most often wear together: the clutch assembly and drum, the worm gear and bearing, plus the outer clutch cover and felling spike. Replacing them together helps ensure correct fit and reduces the chance of premature wear on a new part due to an overlooked companion piece.

• Clutch cover: protects internal parts and mounts to the housing.
• .325" 7T clutch drum: transfers torque to the chain/sprocket.
• Clutch: engages/disengages the chain drive.
• Worm gear & needle bearing: ensure smooth rotational action.
• Felling dog spike: restores chain control when cutting.

Which Husqvarna models will this replacement fit?

This aftermarket assembly is designed to replace the OEM numbers listed and fit a range of Husqvarna 445 and 450 variants produced across multiple years. Always match part numbers and visual fitment before installation.

• Compatible models: Husqvarna 445, 445 E, 445 II, 445 E II, and 450, 450 E, 450 II series.
• Also fits 455 Rancher II and similar model years noted in the product details.
• Replaces OEM references: 544097902, 578097901, 503931801.

How does the kit help with maintenance and cost control?

Chainsaw drive components are consumables; replacing worn parts as a set reduces labor and avoids repeated disassembly. Choosing a repair kit is a cost-effective way to extend tool service life compared with buying new powerhead assemblies.

• Combined replacement reduces return visits and downtime.
• Stainless-steel components and painted cover resist corrosion.
• One-kit swap lowers parts markup versus single OEM components.

What should I check before installing this assembly?

Before you install, inspect the crankcase mating surface, starter components, and bar/chain fit to confirm there are no other worn items that could damage the new parts. Use proper torque and follow safety procedures when servicing the saw.

• Verify model and year compatibility visually and by part number.
• Check the crankshaft flange and starter clutch for damage.
• Use correct tools, torque specs, and a clean workspace.

Who this is for: This Swess replacement clutch cover assembly is aimed at DIY owners, professional arborists, and small-farm operators who maintain Husqvarna 445/450 series chainsaws and prefer to repair rather than replace. It’s suitable for anyone comfortable with basic power tool disassembly and reassembly, looking to cut maintenance costs while restoring reliable clutch and sprocket operation. Note that this is an aftermarket part and is not sponsored by, endorsed by, or affiliated with Husqvarna.