Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 517.044 found under Body Valve by Man Diesel And Turbo Se. The National Stock Number assigned to this part is 4820123817812, and the Federal Supply Class is 4820 Valves Nonpowered. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 517.044.