Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 2871 found under Rocker Armengine Poppet Valve by Jacobs Mfg Co The. The National Stock Number assigned to this part is 2815011571314, 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 2871.