Mercedes-Benz S420 Fuel Filter Replacement Costs Show example Mercedes-Benz S420 Fuel Filter Replacement prices. Service What is the fuel filter and how does it work? The fuel filter is made of cellulose or synthetic-based filter media that traps extremely tiny contaminants, such as rust particles and dirt, present in the fuel as it flows from the fuel tank to the fuel injectors. The filter4.7/5(7) Mercedes Benz S420 Fuel Filter | Auto Parts Warehouse If you're looking to upgrade or repair your Mercedes Benz S420 with a Fuel Filter Auto Parts Warehouse is here for you. Free shipping on orders over $50 always makes purchasing a little easier. fuel filter problems - 1995 Mercedes-Benz S420 Apr 02, 2011S420 / 1995 Mercedes-Benz S420 / Fuel filter problems; Fuel filter problems (1995 Mercedes-Benz S420) something is wrong with my fuel line. The car drives fine & then just cuts off. I think its my fuel filter as i've previously used regular gas instead of premium. How do I change the fuel filter .