Husqvarna Clutch Socket Drum for 445/450 Chainsaws — OEM Part 578097901, Made in USA

High-quality OEM Husqvarna clutch socket drum (part 578097901) — a direct-fit replacement for selected Husqvarna, Jonsered and Poulan chainsaw models, manufactured in the United States.

This genuine OEM clutch drum restores correct engagement and reliable power transfer on affected chainsaws. The part is supplied through authorized Husqvarna channels and replaces several legacy part numbers, so you get factory fitment and the assurance of exact tolerances. It’s intended for owners and technicians who need a dependable replacement component that matches the original factory specification.

How will this clutch drum affect my chainsaw’s performance?

Replacing a worn or damaged clutch drum returns smooth engagement and consistent centrifugal action, which helps the chain accelerate and maintain correct speed under load. Using an OEM drum preserves the original geometry and balance designed by Husqvarna, reducing vibration and uneven wear on the drive components.

• Restores proper clutch engagement and chain acceleration
• Maintains factory balance to minimize vibration
• Prevents premature wear of clutch shoes and sprocket interface

Which chainsaw models is part 578097901 compatible with?

This clutch socket drum is a direct replacement for several Husqvarna and Jonsered models and also cross-references Poulan parts. Confirm compatibility with the model number stamped on your saw housing or in the owner’s manual before ordering to ensure an exact fit.

• Fits Husqvarna: 450 e II, 450, 445 II, 450 E, 450 II, 445 e II
• Fits Jonsered: CS2245, CS2245 S II, CS2245 II, CS2250 S II, CS2245 S, CS2250 S
• Replaces Husqvarna numbers 5038730-73, 503873073, 503873071, 503873072 and Poulan 578097901

Is this an OEM part and where is it made?

Yes — this is an O.E.M.-authorized component supplied to meet Husqvarna factory specifications. It is manufactured in the United States and intended to match original fit, form, and function so you can install it just like the part that came with the saw.

• OEM authorization ensures exact tolerances and compatibility
• Made in the United States for consistent quality control
• Ships as the factory-design replacement, reducing modification needs

What should I know before installing the clutch drum?

Installation requires basic chainsaw mechanical skills and the correct tools — a clutch removal tool and torque specifications from the service manual. Inspect the clutch shoes, sprocket, and bearings when replacing the drum; replacing related wear parts at the same time prevents repeat servicing shortly after.

• Use the proper clutch socket and follow model-specific torque settings
• Check clutch shoes, sprocket, and bearings for wear during replacement
• Refer to the service manual or a qualified technician if unsure about installation

Who is this for: This Husqvarna clutch socket drum is aimed at professional arborists, heavy-duty homeowners, and service technicians who maintain Husqvarna, Jonsered, or compatible Poulan chainsaws. If you need a genuine OEM replacement part to restore factory performance and reliability, this drum offers a direct-fit option manufactured to the brand’s original standards.