Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 1990456 found under Starter Engine Elec by Mtu America Incorporated. The National Stock Number assigned to this part is 2920013295504, and the Federal Supply Class is 2920 Engine Electrical System Components Nonaircraft. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 1990456.