Bautopart Diesel Billet Aluminum Fuel Cap Magnetic for 2013-2016 Dodge Ram (Red) CNC Machined from lightweight 6061-T6 aluminum and then anodized diesel green for a clean look The word "DIESEL" has been laser etched on the top of the cap Neodymium magnet in bottom of fuel cap. When refueling simply place the fuel cap against the steel fuel door and the magnet will conveniently hold it Buna-N Nitrile O-ring for long life and chemical resistance This fuel cap works on all 2013-2016 Dodge Ram diesel trucks with a 'capless' fuel system