Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number CP5881AJ found under Rotor Pump by Pentair Pump Group Inc. The National Stock Number assigned to this part is 4320001216070, 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 CP5881AJ.