Not sure they're quite the same over the years. There were a few updates finishing with the turquoise lettered one being the last and covered all predecessors. Other versions may work, but they may not be the same despite appearances.
The turquoise lettered ICU pn 12-14-2-325-284 with riveted heat sink instead of small bolts is the last one made by BMW. The heat sink is integral and doesn't require periodic servicing of heat sink paste. It has the latest updates and works for bikes with a kicker or not.