Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 664 48820 000 found under Cage Valve by York International Corporation. The National Stock Number assigned to this part is 4820012109937, and the Federal Supply Class is 4820 Valves Nonpowered. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 664 48820 000.