Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number I441YEL-04-NAV found under Cover Life Preserver by Stearns Magnetics Inc. The National Stock Number assigned to this part is 4220014873651, and the Federal Supply Class is 4220 Marine Lifesaving And Diving Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like I441YEL-04-NAV.