Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 104-2158 found under Bearingsleeve by Cummins Power Generation Inc. The National Stock Number assigned to this part is 3120016754163, and the Federal Supply Class is 3120 Bearings Plain Unmounted. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 104-2158.