Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 1159H20258-1 found under Cylinder Assembly Actuating Line by Gulfstream Aerospace Corp. The National Stock Number assigned to this part is 1650011515096, and the Federal Supply Class is 1650 Aircraft Hydraulic Vacuum And De-Icing System Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 1159H20258-1.