Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 507271-0000 found under Filter Element Air Conditioning by Jmr Electronics Inc. The National Stock Number assigned to this part is 4130014785723, and the Federal Supply Class is 4130 Refrigeration And Air Conditioning Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 507271-0000.