Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 5EX78 found under Cage Assembly Pinion Bearing by Oshkosh Corporation. The National Stock Number assigned to this part is 2520011553581, and the Federal Supply Class is 2520 Vehicular Power Transmission Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 5EX78.