Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 657D189-009 found under Bearing Pinion by General Electric Co. The National Stock Number assigned to this part is 5985002209065, and the Federal Supply Class is 5985 Antennas Waveguides And Related Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 657D189-009.