Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number AO36139-F12 found under Filter Element Intake Air Cleane by Fluitek Corp. The National Stock Number assigned to this part is 2940012524798, and the Federal Supply Class is 2940 Engine Air And Oil Filters Strainers And Cleaners Nonaircraft. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like AO36139-F12.