Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number ECU 5T-EU found under Air Conditioner by Alaska Structures Inc. The National Stock Number assigned to this part is 4120015497325, and the Federal Supply Class is 4120 Air Conditioning Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like ECU 5T-EU.