Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 2B9014 found under Lock Upper Shaft Be by Caterpillar Inc. The National Stock Number assigned to this part is 2520004238933, 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 2B9014.