Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number RV-40 PART NUMBER 12 found under Cover Fluid Filter by Golden Arrow Marine Ltd. The National Stock Number assigned to this part is 2945013482573, 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 RV-40 PART NUMBER 12.