Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number VL73 found under Tappet Engine Poppet Valve by Trw Inc. The National Stock Number assigned to this part is 2805007345250, 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 VL73.