Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number L54 CO H517 found under Starter Motor by Honeywell Aerospace. The National Stock Number assigned to this part is 6110013573641, and the Federal Supply Class is 6110 Electrical Control Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like L54 CO H517.