Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 13B8783X012 found under Bellows Pressure by Fisher Controls Co Inc. The National Stock Number assigned to this part is 3010011809988, 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 13B8783X012.