This Drive Shaft Kit,Hopper Imix is a genuine Bunn OEM replacement part. Part number 37539.1000 is used for certain commercial coffee equipment made by BUNN. This part will help repair specific issues you are having with Bunnomatic model IMIX3, IMIX5, IMIX5S Hot Beverage Dispensers. Replace this part if BUNN or a service technician has instructed you to do so. Over time Hoppers for Bunn IMIX3, IMIX5, IMIX5S Hot Beverage Dispensers may need to be replaced because of normal wear and tear or if damage has occurred to the existing part. When replacing BUNN part #37539.1000 it is suggested that no power or water is connected to the machine and you are working in clean and non hazardous environment. Please be sure Drive Shaft Kit,Hopper Imix fits your specific needs.