2009 prostar with cat c13

2009 is a couple years early for DEF. I think that is a storage box of some sort on the side.

 

If it's a SDP Cat series, run far away and don't look back.

 

On the left side? It's a APU.
But still stay away from a 09 CAT.

 

All cat's pre 2003 are good.
Pre 2007 is okay but not as prefered

 

Engine serial number prefix. It'll be the 3 characters that start the last 8 of the engine S/N (eg: C13XXXSPDXXXXX)

 

I've never, EVER seen a Prostar with a Cat motor. I have honestly never seen an International newer than a 9900 with any form of Cat motor. Also somewhat telling is that there is no under-hood picture. I have, however, seen a Maxxforce 13 advertised as a Cat C13. I'd be slightly skeptical and ask for a picture and engine serial number.

 

I agree, thats a maxforce not a cat.