Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 028511 found under Insert Engine Valve Seat by Mitsubishi Caterpillar Forklift. The National Stock Number assigned to this part is 2805003828000, 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 028511.