Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 878843 found under Coupling Clutch by Emerson Power Transmission Corpo. The National Stock Number assigned to this part is 3010001721895, and the Federal Supply Class is 3010 Torque Converters And Speed Changers. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 878843.