Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 1Z603777 found under Ring Piston by Isotta Fraschini Motori Spa. The National Stock Number assigned to this part is 2815151450429, 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 1Z603777.