Make sure you maintain the fuel system in your 1989-1993 Dodge 5.9L Diesel with the correct Fuel Filter. Using an aftermarket or stock replacement filter that is constructed with premium filter media provides proper filtration efficiency and holding capacity. Change your fuel filter often to protect your fuel injectors, fuel injection pump, and engine from fuel system contaminants. Shop manufacturers like AFE, Racor, Dorman, Motorcraft, ACDelco, and more to get the Fuel Filters and accessories your vehicle needs.