Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number R0S180A found under Rotor Engine Poppet Valve by Eaton Corporation. The National Stock Number assigned to this part is 2805000066276, 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 R0S180A.