Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 312109R1 found under Hose Nonmetallic by Navistar Intl Corp. The National Stock Number assigned to this part is 4720001669835, and the Federal Supply Class is 4720 Hose And Flexible Tubing. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 312109R1.