so I looked on the MTH and the Lionel sites for parts or pics of the fans and no luck. Urrggg.
(EMD) G scale engine CR (NS) SD80MAC build | O Gauge Railroading On Line Forum (ogaugerr.com)
I found a picture of the real one online the other day. I can't share the pic so I tried to find where the site was today and now I can't find it!
something like this one