Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 19207-12470685 found under Gear Assembly Speed by Clark Brothers Instrument Company. The National Stock Number assigned to this part is 3010014728812, and the Federal Supply Class is 3010 Torque Converters And Speed Changers. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 19207-12470685.