How do you replace the fuel filter in a 2004 Dodge Neon?

You don't. The fuel filter is located inside the fuel tank and is a permanent filter. _________________________________________________________________

You can actually replace the filter, but it means replacing the entire fuel pump. You can, however, get under the car and pull it out to be sure it does not have anything clogging it up and remove it if there is. The filter isn't sold separate from the pump though.