Husqvarna Spring Part # 537186001 Genuine Husqvarna Part # 537186001 Fits Specific Husqvarna Models That Require This Part # Also Will Fit Other Husqvarna Produced Brands that Require This Part Number (AYP, Craftsman, Jonsered, McCulloch, Poulan, Poulan Pro, RedMax, Sears, Weed Eater) Genuine OEM Husqvarna Part