Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 324636R91 found under Filter Element Fluid by Navistar Intl Corp. The National Stock Number assigned to this part is 2590002154532, and the Federal Supply Class is 2590 Miscellaneous Vehicular Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 324636R91.