Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number F43209-1-3PC3-2T03-4 found under Heaterwell Assembly by Coltec Industries Inc. The National Stock Number assigned to this part is 4420007324531, and the Federal Supply Class is . Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like F43209-1-3PC3-2T03-4.