Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number HR0078C found under Cylinder Head Diese by Ecolaire Heat Transfer Co. The National Stock Number assigned to this part is 2815004096306, 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 HR0078C.