Husqvarna Clutch Drum Assy Part # 545171901 Clutch Drum Sprocket Assy Genuine Husqvarna Part # 545171901 Fits Specific Husqvarna, Poulan &amp; Craftsman Models Also Fits Other Brands Produced by Husqvarna that Require this Part # (Craftsman, AYP, Poulan, Poulan Pro, Roper, Weeed Eater etc) Genuine OEM Husqvarna Part