Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number C351 2000 46 found under Mask Oxygen by B E Aerospace Inc. The National Stock Number assigned to this part is 1660016170044, and the Federal Supply Class is 1660 Aircraft Air Conditioning Heating And Pressurizing Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like C351 2000 46.