Identifying Chrysler Alternators (1960-1976)

Identifying original parts.

First. I am not an expert on this. This is just a cheat sheet on some of the basics and some links.
Here's a nice example of a standard pre-1970 alternator from Plum Crazy original tech and date code info


The thing that will survive when the markings have worn off is the raised rib of the rear bearing.

This is an example of a standard 1970-71 roundback from this moparts thread.


Here's a pic Scott Smith Harms took of probably an original 70-71 installed.
I believe the orange paint indicates the 'rating' and is in addition to the part number.

Also interesting that this one has the same rear casting shape as as a '60 to '69.

As far as I can tell, all of these alternators had the part number stamped on the side after assembly.

Here's an example from a beat up one I own. P/n 2642 547



Later alternators got a colored round tag for identification.
There is a list, or a partial list, of these tags in a book by Paul Herd.

picture from 1975 Dart Sport - Alternator Issue?

The green color of the stator windings I think is another clue.

edit: here's some notes from Paul Herd 1967-73 Barracuda and Challenger
Tags started in 1974. Color indicates 'rating'