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Questions? Call or Text our US based team: 800-964-5341
Questions? Call or Text our US based team: 800-964-5341

Auxiliary Fuel Tanks for Sale

We offer a full line of Auxiliary Fuel Tanks for sale.  Choose from sizes that start at 30 gallons and increase up to 110 gallons.  We offer a variety of designs including rectangle, L Shaped, wedge, and low profiles. 

Auxiliary fuel tanks allow you to transfer diesel fuel directly into your truck's factory gas tank.  We do not sell Gas Auxiliary Fuel Tanks.

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    ATI AUX30R auxiliary fuel tank Save up to 15% Save %
    $675.00 - $776.47
    $675.00 - $776.47
    $675.00
    $573.75 - $660.00
    $573.75 - $660.00
    $573.75

    ATI Rectangular Diesel Aluminum Auxiliary Tank

    Aluminum Tank Industries

      Aluminum Tank Industries rectangle aluminum auxiliary fuel tank is available in sizes that range from 30 gallons to 55 gallons.  These light weig...

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    $675.00 - $776.47
    $675.00 - $776.47
    $675.00
    $573.75 - $660.00
    $573.75 - $660.00
    $573.75
    Save up to 15% Save %
    The Fuelbox FT47 closeup Save up to 15% Save %
    $1,747.00 - $2,029.00
    $1,747.00 - $2,029.00
    $1,747.00
    $1,485.00 - $1,725.00
    $1,485.00 - $1,725.00
    $1,485.00

    The Fuelbox Auxiliary Fuel Transfer Tank

    The Fuelbox

    The Fuelbox Auxiliary Fuel Transfer Tank is an in bed diesel fuel tank. Choose whether you want to use this fuel tank as a transfer tank or an auxi...

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    $1,747.00 - $2,029.00
    $1,747.00 - $2,029.00
    $1,747.00
    $1,485.00 - $1,725.00
    $1,485.00 - $1,725.00
    $1,485.00
    Save up to 15% Save %
    $893.00 - $1,444.00
    $893.00 - $1,444.00
    $893.00 - $1,444.00
    $893.00

    ATTA Rectangular Diesel Auxiliary Fuel Tank

    ATTA

    ATTA rectangular diesel auxiliary fuel tanks are designed with .125 aluminum gage and are available in sizes that range from 40 gallons to 110 gall...

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    $893.00 - $1,444.00
    $893.00 - $1,444.00
    $893.00 - $1,444.00
    $893.00

    Auxiliary Fuel Tank Resources

    See our guide to the best Auxiliary Fuel Systems.

    Unsure of the Best Tank Size? See our Auxiliary Tank Size List by Brand: