Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number TD422UL090Y1 found under Indicator Filter Wa by Pall Aeropower Corporation. The National Stock Number assigned to this part is 2945014636949, and the Federal Supply Class is 2945 Engine Air And Oil Filters Cleaners Aircraft Prime Moving. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like TD422UL090Y1.