Alternator Issue

Alternator.jpg

NOTE: this is not my alternator only an example

Was changing my battery out an noticed the connection from the battery to the alternator was red hot. I took the bolt off and it crumbled and broke off and the picture above of the red piece sticking up is the piece that melted.

Before I replace the alternator I just wanted to post here to see if anyone knew if that red piece is replaceable and what its called. :irritated: