Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 31431881 found under Valve Poppet Engine by Perkins France. The National Stock Number assigned to this part is 2815992088482, 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 31431881.