Craftsman Lawn Mower Part # 137050 GEAR.HELICAL Helical Gear Genuine Husqvarna Part # 532137050 Fits Specific Husqvarna 56CS, 56DHS, 56HS, 56HST, 56SF, 56SFE, 560HS, 6522CHA, 6522CHB, 6522CHC, 6522SHA, 6522SHB &amp; 6522SHC Models Also Fits Other Brands Produced By Husqvarna That Require This Part # (AYP, Craftsman, Poulan, Poulan Pro, Roper, Weed Eater etc) Genuine OEM Husqvarna Part