To be certain and to find specific details relevant to *your* 1998 Dodge Ram's engine (e.g., 5.2L, 5.9L, etc.), I strongly recommend checking your owner's manual or consulting a repair manual specific to your vehicle's year, make, model, and engine. A visual diagram will be invaluable. You can also search online for "1998 Dodge Ram [your engine size] fuel filter location" for images and potentially videos.