Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number W422 38 ITEM 5 found under Indicator Filter Wa by Rolls Royce Marine As Avd Norwinch. The National Stock Number assigned to this part is 2940251501925, 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 W422 38 ITEM 5.