MTD 618-0121, 918-0415B AUGER GEARCASE ASSEMBLY, Track snowblower, 26 CraftsmanMTD snowblower auger gearbox assembly as pictured. Has some rust and grime but in good used condition. Shaft turns without any issues. SOME BENDING of ears on the impeller- see all pics. Please note the SPLINED end of the impeller shaft on this. Make sure.