Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number R12390 found under Flow Regulator Assembly by Manitou North America Inc. The National Stock Number assigned to this part is 2590013962475, and the Federal Supply Class is 2590 Miscellaneous Vehicular Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like R12390.