Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 899258R1 found under Cap Upper Bearing by Navistar Intl Corp. The National Stock Number assigned to this part is 2805008481156, and the Federal Supply Class is 2805 Gasoline Reciprocating Engines Except Aircraft And Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 899258R1.