Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 5111B4008 found under Bowl Sediment by Ross Operating Valve Co. The National Stock Number assigned to this part is 2940011568389, 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 5111B4008.