Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number FS 11 BB 2 found under Insert Engine Valve by Cooper Cameron Corp. The National Stock Number assigned to this part is 2815003387880, and the Federal Supply Class is 2815 Diesel Engines And Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like FS 11 BB 2.