Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number RV40A1 found under Head Fluid Filter by Wisconsin Motors Llc. The National Stock Number assigned to this part is 2940000719109, 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 RV40A1.