I missed that in his original question!

The corrosion process is an electrical chemical reaction. You can protect the pylons and other aluminum bits by connecting something to it that is more reactive to make a sacrificial anode. This method is used on everything from boat motors, docks, and even the steel natural gas pipes in the ground. If you were to connect a magnesium anode to the aluminum part and make sure it remains in solid electrical contact, it will protect the aluminum. The question then follows; is it worth all of that expense and trouble?