Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 4C143 found under Impeller Fan Axial by Dayton Electric Mfg Co. The National Stock Number assigned to this part is 4140013040131, and the Federal Supply Class is 4140 Fans Air Circulators And Blower Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 4C143.