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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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    ATTA Diesel Auxiliary Roll-Top Bedcover Tank 45 gallon
    $1,145.00 - $1,390.00
    $1,145.00 - $1,390.00
    $1,145.00 - $1,390.00
    $1,145.00

    ATTA Diesel Auxiliary Roll-Top Bedcover Tank

    ATTA

    The aluminum ATTA Auxiliary Roll-Top Bedcover Tank is designed to be in conjunction with a roll-top bed cover. The aluminum auxiliary diesel tank ...

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    $1,145.00 - $1,390.00
    $1,145.00 - $1,390.00
    $1,145.00 - $1,390.00
    $1,145.00
    ATTA Sleeper Diesel Auxiliary Fuel Tank 110 gallon closeup
    $1,683.00 - $1,683.00
    $1,683.00
    $1,683.00 - $1,683.00
    $1,683.00

    ATTA Sleeper Diesel Auxiliary Fuel Tank

    ATTA

    The aluminum ATTA Sleeper Diesel Auxiliary Fuel Tank is a 110 gallon rectangular aluminum auxiliary fuel tank designed to fit underneath a truck b...

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    $1,683.00 - $1,683.00
    $1,683.00
    $1,683.00 - $1,683.00
    $1,683.00
    ATTA Diesel Extreme Wedge Auxiliary Fuel Tank
    $1,103.00 - $1,477.00
    $1,103.00 - $1,477.00
    $1,103.00 - $1,477.00
    $1,103.00

    ATTA Diesel Extreme Wedge Auxiliary Fuel Tank

    ATTA

    ATTA Aluminum Extreme Wedge Style fuel tanks are constructed from .125 gauge aluminum. Wedge Style tanks are designed for full size Dodge, Ford, a...

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    $1,103.00 - $1,477.00
    $1,103.00 - $1,477.00
    $1,103.00 - $1,477.00
    $1,103.00
    ATTA Auxiliary Tank Toolbox Combo in pickup bed
    $1,504.00 - $1,504.00
    $1,504.00
    $1,504.00 - $1,504.00
    $1,504.00

    ATTA Diesel Auxiliary Tank & Toolbox Combo AT50TT

    ATTA

    ATTA Diesel Auxiliary Tank & Toolbox combos provide an ideal solution for securely storing a 50 gallon auxiliary fuel tank and a toolbox in an...

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    $1,504.00 - $1,504.00
    $1,504.00
    $1,504.00 - $1,504.00
    $1,504.00
    ATTA L-Shape Diesel Auxiliary Fuel Tank 90 Gallon
    $1,540.00 - $1,597.00
    $1,540.00 - $1,597.00
    $1,540.00 - $1,597.00
    $1,540.00

    ATTA L-Shape Diesel Auxiliary Tank

    ATTA

    The aluminum ATTA L-Shape auxiliary diesel tank is for long beds only.  It comes standard with duel fill necks for easier fueling. L-Shape tanks w...

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    $1,540.00 - $1,597.00
    $1,540.00 - $1,597.00
    $1,540.00 - $1,597.00
    $1,540.00
    Diesel Auxiliary Under Toolbox Tank 30 Gallon
    $1,024.00 - $1,024.00
    $1,024.00
    $1,024.00 - $1,024.00
    $1,024.00

    ATTA Diesel Auxiliary Low Profile Under Toolbox Tank

    ATTA

    The aluminum ATTA low profile under toolbox fuel tank is designed for short beds only. The Under Toolbox fuel tank is designed to work in conjunct...

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    $1,024.00 - $1,024.00
    $1,024.00
    $1,024.00 - $1,024.00
    $1,024.00
    Diesel Wedge Auxiliary Fuel Tank 50 Gallon
    $979.00 - $1,298.00
    $979.00 - $1,298.00
    $979.00 - $1,298.00
    $979.00

    ATTA Diesel Wedge Auxiliary Fuel Tank

    ATTA

    ATTA Aluminum standard wedge tanks give you more of the custom look compared to a standard rectangular tank. The standard wedge auxiliary tank is ...

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    $979.00 - $1,298.00
    $979.00 - $1,298.00
    $979.00 - $1,298.00
    $979.00
    $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
    ATTA Below Bed Rail Diesel Auxiliary Tank 45 gallons
    $938.00 - $1,359.00
    $938.00 - $1,359.00
    $938.00 - $1,359.00
    $938.00

    ATTA Low Profile Below Bed Rail Diesel Auxiliary Tank

    ATTA

    ATTA Low Profile Below Bed Rail rectangular tanks are designed to be used with a hard or soft bed cover. The highest portion of the tank will be b...

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    $938.00 - $1,359.00
    $938.00 - $1,359.00
    $938.00 - $1,359.00
    $938.00

    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: