Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number U1400 found under Switch Engine Start by General Motors Llc. The National Stock Number assigned to this part is 2920010248978, 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 U1400.