Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 1159BM20587-1 found under Housing Bearing Unit by Gulfstream Aerospace Corp. The National Stock Number assigned to this part is 3130012883202, and the Federal Supply Class is 3130 Bearings Mounted. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 1159BM20587-1.