Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 163879 found under Differential Vehicu by Nacco Materials Handling Group Inc. The National Stock Number assigned to this part is 2520007588713, and the Federal Supply Class is 2520 Vehicular Power Transmission Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 163879.