Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number P21047A1 found under Piston Internal Combustion Engin by Cooper Cameron Corp. The National Stock Number assigned to this part is 2815005285707, 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 P21047A1.