1.Diesel Fuel Caps Used for 2013 2014 2015 2016 2017 Dodge Ram 1500 2500 3500 diesel trucks with a cap less fuel system, Cummins and Eco-diesel vehicles with 3.0L V6 engines. 2.Diesel cap are carefully crafted with CNC billeted aluminum for longer-lasting durability and reliability over your standard plastic cap. 3.Easy installation to replace the old with our dual O-ring system caps to protect your diesel engine from dirt, dust and grime , friendly customer services 4.Diesel use laser engraving and use white paint, the font are clear and with hand feel. 5.1*Magnetic green Dodge Ram diesel fuel cap for Dodge Ram.