07-09 Ram 2500 35 6.7L Turbo Diesel (3) Fuel Filter Water Separator GF400 33733 Set of 3 Filters Traps fuel contaminants before they enter the engine's fuel delivery system Symptoms of clogged fuel filters, rough running, poor acceleration, decreased fuel economy Removing gas cap before replacing the fuel filter will release system pressure; replace cap after filter installation Fuel filters are a last stop effort to feed clean gas to the engine