Get the Transmission Fluid you need for your 2003-2004 Dodge 5.9L Diesel. Using a quality fluid provides you with smooth gear changes and contains additives to prevent the formation of corrosion, rust, and foam. Available in conventional and synthetic varieties, these transmission fluids offer longer service life by reducing damaging heat and wear. XDP carries high quality fluids from Sun Coast Converters, Royal Purple, Hot Shot's Secret, and Lucas Oil.