Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 43490-089W found under Transformer Power by Marconi Electronics Inc. The National Stock Number assigned to this part is 5950013115293, and the Federal Supply Class is 5950 Coils And Transformers. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 43490-089W.