Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 03W1738 239 found under Cock Poppet Drain by Falls Filtration Technologies In. The National Stock Number assigned to this part is 4820661317063, 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 03W1738 239.