Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 99-5000 found under Parts Kit Air Filter by K And N Engineering Inc. The National Stock Number assigned to this part is 2940016156664, 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 99-5000.