Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 552939 found under Housing Liquid Pump by Outboard Marine Corp Galesburg. The National Stock Number assigned to this part is 4320008902317, 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 552939.