To be certain, you should:
* Consult your owner's manual: This is the best resource for the exact location.
* Use a repair manual: A Haynes or Chilton manual for your specific year and model will have diagrams showing the fuel filter location.
* Search online: A Google image search for "1999 Dodge Ram Van 1500 5.2L fuel filter location" might yield helpful images from other owners who've done the same repair.
Important Safety Note: Working with fuel systems requires caution. Always disconnect the battery negative terminal before beginning any fuel system work. Fuel is flammable and potentially explosive. Proper ventilation is crucial. If you're unsure about any aspect of this job, it's best to have a qualified mechanic perform the fuel filter replacement.