Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 171862R91 found under Air Cleaner Intake by Navistar Intl Corp. The National Stock Number assigned to this part is 2940005621030, and the Federal Supply Class is 2940 Engine Air And Oil Filters Strainers And Cleaners Nonaircraft. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 171862R91.