Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 5511104-641 found under Duct Assembly Air C by Senior Operations Llc. The National Stock Number assigned to this part is 1660014625570, 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 5511104-641.