Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 72GCA1135B found under Tappet Engine Poppe by Mack Trucks Inc. The National Stock Number assigned to this part is 2815009747619, 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 72GCA1135B.