This armature assembly began being used in Minn Kota 70# thrust motors in 2018. This is ONLY a direct replacement for armatures that are stamped with the Core 128. If the armature in your 70# thrust Minn Kota motor is not stamped with Core 128, you will need the 70# Armature and Brush Plate Upgrade Kit, p/n 2770128.
Not sure if this part will fit your Minn Kota trolling motor? Parts Diagrams