Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number HR50227 found under Rod Piston by Ecolaire Heat Transfer Co. The National Stock Number assigned to this part is 2820003859727, and the Federal Supply Class is 2820 Steam Engines Reciprocating And Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like HR50227.