Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 574439 found under Hose Assembly Nonmetallic by Dana Off Highway Products Llc. The National Stock Number assigned to this part is 4720001335583, 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 574439.