Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 1-12330-3100 found under Cover Transmission by Regal Beloit Corp Durst Div. The National Stock Number assigned to this part is 2520013383961, 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 1-12330-3100.