Description
Overview:
This genuine Husqvarna clutch drum is an OEM replacement part for mid-range petrol chainsaws, engineered to transfer engine power smoothly to the chain. Built from durable, machined metal (steel), it forms the outer housing that the clutch shoes engage with, ensuring reliable chain drive under load. It is designed for Husqvarna tools such as the 450E and 455, giving a precise fit within the original clutch and sprocket system. A sound clutch drum helps maintain cutting performance, reduces drive issues, and supports consistent chain speed during felling, pruning, and firewood work. As a service item, it is suitable for both professional users and DIY owners who want to restore factory performance with a part that matches Husqvarna's specifications. Status: Genuine Husqvarna OEM part.
Key Features:
- Genuine Husqvarna OEM part for assured compatibility and build quality
- Steel construction for long service life under demanding cutting conditions
- Precision fit to maintain smooth power transmission and consistent chain drive
- Helps restore performance where the original drum is worn, scored, or slipping
- Supports reliable clutch engagement to reduce erratic chain movement
- Made for selected 445/450/455 series saws, matching the original design
- Straightforward replacement using standard workshop tools to minimise downtime
- Suitable for regular maintenance to prevent avoidable wear on related drivetrain parts
Typical Applications:
Used as a direct replacement during routine servicing or when diagnosing drive problems such as poor chain movement or uneven acceleration. Ideal for general cutting, firewood processing, pruning, and light to medium logging tasks where dependable chain drive is required. Recommended when refurbishing a saw to maintain OEM performance and reliability across frequent start-stop cycles.
Also known as:
Clutch bell, drive drum, sprocket drum, drum sprocket, chain drive drum, centrifugal clutch drum, chain drive housing. These terms are commonly used for the same component within the chainsaw's clutch and drive system.
Fits Models:
445E, 445EII, 445II, 450, 450 E 11, 450 II, 450 Rancher, 450 Rancher II, 450E, 450E11, 450EII, 450II, 450R, 450Rancher, 450RancherII, 455, 455 E II, 455 II, 455EII, 455II
Alternate Part Numbers:
578 09 79-01, 578097901
Product Specifications
| L&S Part No. | 578 09 79 01 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Husqvarna |
| OEM No. | 578097901 |
| Unit of Sale | 1 |
| Applications | 445E, 445EII, 445II, 450, 450 E 11, 450 II, 450 Rancher, 450 Rancher II, 450E, 450E11, 450EII, 450II, 450R, 450Rancher, 450RancherII, 455, 455 E II, 455 II, 455EII, 455II |
| Machine Type | Chainsaws |
| Fits Brands | Husqvarna |
| Fits Models | 445EII | 445II | 450 | 450EII |
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