Upper gear kit - 5973717-01 Spare part from the Husqvarna spare parts catalog Suitable for example for: Husqvarna 322HD60 Husqvarna 522HD60S Husqvarna 522HD60X Husqvarna 522HDR60S Husqvarna 522HDR60X Husqvarna 522HDR75S Husqvarna 522HDR75X