Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number SX1121 found under Valve Poppet Engine by American Kenco Inc. The National Stock Number assigned to this part is 2805009205388, and the Federal Supply Class is 2805 Gasoline Reciprocating Engines Except Aircraft And Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like SX1121.