2nd gen vs 3rd gen alternator

[Blrob]

If an alternator from the 2nd or 3rd gen will work in an 04 Explorer?

 

[4X50 Exploder]

Cross referance

Not sure about your engine so try this site. Use their interactive catalog to get to your model and engine type. When you are looking at the part you want, click on the blue link of their part number and it brings up the list of what models and years it fits… Let me know how it works out for you.

http://www.rockauto.com/catalog/raframecatalog.php?make=FORD&year=2004&model=EXPLORER