TITAN Extra Large Capacity Diesel Fuel Tanks ends the headaches, saves on time, improves range and cuts fuel costs. With your Dodge Cummins, Ford Powerstroke, or Chevy/GM Duramax, you can fill up when you want. Made of a high-density cross-linked polyethylene (XLHDPE), Titan Fuel Tanks are corrosion proof, durable, lightweight, easy to install, and work with existing fuel gauges. No modifications are needed and optional equipment, designed to enahnce your Titan Fuel Tank can be purchased as well. TITAN Fuel Tanks are also compliant with the Air Resources Board of the California Environmental Protection Agency (CARB).