Keep the lift pump on your 2003-2004 Dodge 5.9L Diesel working its best with frequent Fuel Filter replacement. In some applications you can cross-reference a replacement filter to your existing filter due to availability to increased filtration. Fuel filters are offered in different micron ratings depending on the specific model of your lift pump. Get the filters you need for your AirDog, FASS, Fuelab, or AFE lift pump.