Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 430074REV.E IT.27 found under Plug Vent by Western Filter A Division Of. The National Stock Number assigned to this part is 5340014295856, and the Federal Supply Class is 5340 Hardware Commercial. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 430074REV.E IT.27.