DOCA Dodge Ram diesel fuel cap set — green magnetic diesel + blue DEF for 2019–2025, aluminum corrosion‑resistant

This DOCA aluminum cap combo replaces the factory caps on compatible Dodge Ram pickups, giving a corrosion-resistant, quick-access diesel cap with an integrated magnet and a separate blue DEF cap. Both caps use a molded rubber sealing ring to help keep contaminants out of the fuel and DEF ports while offering a rugged, finished look that matches diesel service color conventions.

Will these caps fit my Dodge Ram?

These caps are made to fit the diesel fuel and DEF filler necks on 2019–2025 Dodge Ram trucks (1500, 2500, 3500), but they are not compatible with older Ram models that use a different filler design. Confirm your truck year and compare your filler opening to product photos before ordering.

• Designed for Dodge Ram diesel models from 2019 through 2025.
• Not compatible with pre-2019 Ram trucks or other fill-neck designs.
• Includes separate green diesel cap and blue DEF cap sized to factory openings.

How does the magnetic feature help when refueling?

The green diesel cap contains a strong built-in magnet so you can momentarily secure it to the truck’s body while fueling instead of holding or setting it on the ground. This keeps the cap close at hand, reduces dirt contact, and speeds up the fill process without modifying the vehicle.

• Integrated magnet adheres to metal surfaces during refueling.
• Prevents the cap from touching the ground or collecting debris.
• Quickly reattaches to the filler neck when finished.

What materials and sealing features are used?

Both caps are CNC-formed from aluminum alloy for rust resistance and lightweight durability. Each cap includes a molded rubber O-ring that compresses against the filler lip to help exclude dust and moisture from the tank and DEF reservoir.

• Aluminum alloy construction resists corrosion and fading.
• Rubber sealing ring reduces contaminant ingress at the filler opening.
• Durable finish suited to regular fueling use and outdoor storage.

Are these caps easy to install and use?

Yes — these caps thread on and off the filler neck like factory caps, so no tools or vehicle modifications are required. The magnetic green diesel cap behaves like a conventional cap while adding the convenience of magnetic parking on metal surfaces; the blue DEF cap functions as a standard non-magnetic reservoir cap.

• Tool-free installation using the existing filler threads.
• Magnetic green cap for diesel; non-magnetic blue cap for DEF.
• Direct-replacement form factor for hassle-free swap.

Who this is for: This DOCA aluminum cap set is ideal for owners of 2019–2025 Dodge Ram 1500/2500/3500 diesel trucks who want a durable, rust-resistant replacement that keeps the diesel cap handy while fueling and offers a tidy, color-coded DEF cap. Choose this set if you want factory-like fitment with added convenience and a tighter seal against dirt and moisture. If your Ram is older than 2019 or uses a different filler design, check compatibility before purchasing.