DOCA Diesel Fuel Cap for Dodge Ram — Magnetic Green Aluminum, Fits 2019–2026 1500/2500/3500

DOCA's magnetic green diesel fuel cap is a patented aluminum replacement specifically made to fit 2019–2026 Dodge Ram 1500, 2500, and 3500 diesel trucks that use the three-vertical-post fuel filler design.

This high-visibility diesel fuel cap combines corrosion-resistant aluminum construction with a magnetic hold and a vibrant green finish so you can replace a worn or missing OEM diesel cap with a durable, eye-catching alternative. Designed to match the OEM filler geometry for model years 2019 through 2026, the cap installs quickly and stays secure during everyday driving and off-road use. The design is protected by U.S. design patent US D1,019,506 S.

Will this diesel fuel cap fit my Dodge Ram?

Yes—this cap is engineered for Dodge Ram diesel trucks from 2019 through 2026 that feature the three vertical plastic posts inside the fuel filler. It is intended for diesel models only and replaces the factory FUEL/DIESEL cap.

• Compatible models: 2019–2026 Dodge Ram 1500, 2500, 3500 diesel variants
• Requires the three vertical plastic posts in the filler neck
• Not compatible with non-diesel or different filler configurations

How durable and secure is the DOCA magnetic cap?

The cap is machined from aluminum to resist rust and abrasion better than many plastic caps, and the magnetic design helps keep a tight seal against the filler flange. It’s built to handle road vibration, weather exposure, and routine fuel stops without loosening.

• Aluminum body for corrosion resistance and longevity
• Magnetic retention enhances seal and reduces accidental loss
• Designed to withstand typical road and off-road conditions

How easy is installation and everyday use?

Installation is straightforward: align the cap with the fuel filler posts and press into place—no special tools required. The magnetic feature makes securing and removing the cap quick, and the green finish improves visibility at night or in crowded fuel bays.

• Tool-free installation—align and snap into the three posts
• Quick removal with a secure magnetic engagement
• Bright green color provides fast visual recognition

What about design and legal protection?

This fuel cap’s styling and mechanical details are covered by U.S. design patent US D1,019,506 S, reflecting a distinctive look and engineered functionality. The combination of finish, fit, and magnetic retention represents a unique replacement option for Dodge Ram diesel owners.

• Protected by U.S. design patent: US D1,019,506 S
• Distinctive green finish for easy identification
• Manufactured to align with OEM filler geometry

Who is this for? If you own a 2019–2026 Dodge Ram diesel pickup (1500, 2500, or 3500) with the three vertical posts in the fuel filler and you want a durable, visually distinct replacement cap, this DOCA magnetic green diesel fuel cap is a practical upgrade. It’s ideal for drivers who prefer metal hardware over plastic, those who want faster fuel-stop handling, and truck owners who need a secure replacement that won’t corrode or easily get lost.