Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number R23519138 found under Pump Centrifugal by Mtu America Incorporated. The National Stock Number assigned to this part is 4320000013481, and the Federal Supply Class is 4320 Power And Hand Pumps. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like R23519138.