Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 191-1558 found under Brush Electrical Co by Cummins Power Generation Inc. The National Stock Number assigned to this part is 5977012288191, and the Federal Supply Class is 5977 Electrical Contact Brushes And Electrodes. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 191-1558.