Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number D31316000-4 found under Pack Assy Clutch Tr by Gkn Rockford Inc. The National Stock Number assigned to this part is 2520004344478, 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 D31316000-4.