Capless fuel and diesel exhaust fluid (DEF) tank filler systems allow the entry of moisture and dirt that can damage fuel and emission control systems. Eliminate that potentially expensive problem while adding some distinctive style to your Jeep Grand Cherokee or Dodge Ram with these DEF and fuel tank caps. CNC-machined from billet aluminum and fitted with quality O-rings, these caps seal filler necks to keep contaminants out. They feature an eye-catching, glossy anodized coating that resists staining. This part is compatible with the following vehicles. Before purchasing, enter your vehicle trim in the garage tool to confirm fitment. [Jeep Gladiator: 2021] - [Jeep Grand Cherokee: 2017, 2018, 2019, 2020] - [Jeep Wrangler: 2020, 2021] - [Ram 1500 Classic: 2019, 2020, 2021] - [Ram 1500: 2018, 2019, 2020, 2021] - [Ram 2500: 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021] - [Ram 3500: 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021]