This Stem Assembly, 2.5l Airpot-Stainless Steel (8.65") is a genuine Bunn OEM replacement part. Part number 35091.0000 is used for certain commercial coffee equipment made by BUNN. This part will help repair specific issues you are having with Bunnomatic model AIRPOT, CWTFAPS, Airpot. Replace this part if BUNN or a service technician has instructed you to do so. Over time Tubes for Bunn AIRPOT, CWTFAPS, Airpot may need to be replaced because of normal wear and tear or if damage has occurred to the existing part. When replacing BUNN part #35091.0000 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 Stem Assembly, 2.5l Airpot-Stainless Steel (8.65") fits your specific needs.