Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 223-7221 found under Valve Poppet Engine by Wartsila Canada Inc. The National Stock Number assigned to this part is 2815012507850, 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 223-7221.