Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number A044B674 found under Engine Block Assembly Diesel by Onan Corp. The National Stock Number assigned to this part is 2815016189810, and the Federal Supply Class is 2815 Diesel Engines And Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like A044B674.