Fuel Filter? | DODGE RAM FORUM - Dodge Truck Forums wwworum››4th Gen : 2009 - 2018›Engine & PerformanceApr 28, 2014Hemi 5.7 Wow, the late, great John Lingenfelter (Corvette and GM guru) always stated change your fuel filter at any servicing, said it was a cheap maintenance for what it was worth. I have always done that on any toys, and like you said, changed it minimum once a year on daily drivers. Where Is the Fuel Filter on a Dodge RAM Located wwwrence›Car Parts & MaintenanceMost Dodge Ram owners are quite shocked to learn that the fuel filter is located inside the gas tank. It can be quite costly to replace since the entire unit must be replaced and the gas tank removed in order to do so. To replace a fuel filter on a Dodge Ram with a gasoline engine, remove the fuel pump relay from the power distribution center.