Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 3D1003 found under Muffler Engine E Ha by Napco International Llc. The National Stock Number assigned to this part is 2990007088747, and the Federal Supply Class is 2990 Miscellaneous Engine Accessories Nonaircraft. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 3D1003.