Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 12254249 found under Crankshaft Engine by Optex Systems Inc. The National Stock Number assigned to this part is 2815012339709, 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 12254249.