To be absolutely certain, it's best to:
* Consult your owner's manual: This is the most reliable source for your specific truck.
* Use a repair manual specific to your vehicle year and model: These manuals provide detailed diagrams and instructions.
* Search online for images: Searching for "2004 Dodge Ram 1500 fuel filter location" on Google Images can show you pictures of where it's located on similar trucks.
Remember to be careful when working near fuel lines and always follow proper safety procedures when working on your vehicle's fuel system.