Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 2191856 found under Block Set Engine Drive by Diesel Parts International Corp. The National Stock Number assigned to this part is 2815014703379, 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 2191856.