Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 54-9191 found under Drive Engine Electrical Starter by Wetherill Associates Inc. The National Stock Number assigned to this part is 2920013958814, 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 54-9191.