Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 78 8452 5021 2 found under Heater Assembly by Imation Corp. The National Stock Number assigned to this part is 1660010212267, 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 78 8452 5021 2.