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40 Gallon Fuel Tanks

Browse our selection of 40 gallon transfer tanks, auxiliary tanks and tank toolbox combos for sale. Transfer Tanks use a fuel pump and auxiliary tanks will connect to your truck's factory fuel tank if you have a diesel powered truck. We offer aluminum or steel auxiliary fuel tanks.
  • Original price $644.12 - Original price $711.76
    Original price $644.12 - Original price $711.76
    Original price $644.12
    $547.50 - $605.00
    $547.50 - $605.00
    Current price $547.50

    ATI Rectangular DOT Approved Aluminum Transfer Tank

    Aluminum Tank Industries

    Aluminum Tank Industries rectangle Refueling aluminum Transfer Tanks are legal in all 50 states for gasoline, kerosene, methanol, diesel, and aviat...

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    Original price $644.12 - Original price $711.76
    Original price $644.12 - Original price $711.76
    Original price $644.12
    $547.50 - $605.00
    $547.50 - $605.00
    Current price $547.50
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  • Original price $675.00 - Original price $776.47
    Original price $675.00 - Original price $776.47
    Original price $675.00
    $573.75 - $660.00
    $573.75 - $660.00
    Current price $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 weigh...

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    Original price $675.00 - Original price $776.47
    Original price $675.00 - Original price $776.47
    Original price $675.00
    $573.75 - $660.00
    $573.75 - $660.00
    Current price $573.75
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  • Original price $660.29 - Original price $991.18
    Original price $660.29 - Original price $991.18
    Original price $660.29
    $561.25 - $842.50
    $561.25 - $842.50
    Current price $561.25

    ATI L-Shape Refueling Transfer Tank

    Aluminum Tank Industries

    Aluminum Tank Industries L-Shape DOT approved Refueling Transfer Tank are legal in all 50 states for gasoline, kerosene, methanol, diesel, and avia...

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    Original price $660.29 - Original price $991.18
    Original price $660.29 - Original price $991.18
    Original price $660.29
    $561.25 - $842.50
    $561.25 - $842.50
    Current price $561.25
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  • Original price $1,223.00
    Original price $1,223.00 - Original price $1,332.00
    Original price $1,223.00
    $1,112.00 - $1,332.00
    $1,112.00 - $1,332.00
    Current price $1,112.00

    ATTA DOT Approved Under Tonneau Cover Transfer Tank

    ATTA

    ATTA DOT Approved Low Profile Under Tonneau Cover Transfer Tank is a DOT legal tank. The tank design includes a lower height fuel bung that enable...

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    Original price $1,223.00
    Original price $1,223.00 - Original price $1,332.00
    Original price $1,223.00
    $1,112.00 - $1,332.00
    $1,112.00 - $1,332.00
    Current price $1,112.00
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  • Original price $2,159.00 - Original price $2,299.00
    Original price $2,159.00 - Original price $2,299.00
    Original price $2,159.00
    $1,900.00 - $2,135.00
    $1,900.00 - $2,135.00
    Current price $1,900.00

    The Fuelbox Under Tonneau Fuel Tank Toolbox Combo

    The Fuelbox

    The Fuelbox Under Tonneau is a low profile fuel tank toolbox combo.  This fuel tank toolbox combo is designed to work with most tonneau covers. Th...

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    Original price $2,159.00 - Original price $2,299.00
    Original price $2,159.00 - Original price $2,299.00
    Original price $2,159.00
    $1,900.00 - $2,135.00
    $1,900.00 - $2,135.00
    Current price $1,900.00
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  • Original price $726.00 - Original price $1,214.00
    Original price $726.00 - Original price $1,214.00
    Original price $726.00
    $660.00 - $1,104.00
    $660.00 - $1,104.00
    Current price $660.00

    ATTA Rectangular DOT Approved Transfer Tank

    ATTA

    ATTA rectangular transfer tanks are DOT approved for use with diesel, gasoline, kerosene, ethanol, methanol and aviation fuel.  Secure your transfe...

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    Original price $726.00 - Original price $1,214.00
    Original price $726.00 - Original price $1,214.00
    Original price $726.00
    $660.00 - $1,104.00
    $660.00 - $1,104.00
    Current price $660.00
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  • Original price $1,761.05 - Original price $1,761.05
    Original price
    $1,761.05
    $1,761.05 - $1,761.05
    Current price $1,761.05

    Transfer Flow Low Profile Under Tonneau Cover Transfer Tank

    Transfer Flow

    If you need a low profile fuel transfer tank that fits under most standard sized tonneau covers, Transfer Flow offers a 40 gallon tank with a 12V G...

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    Original price $1,761.05 - Original price $1,761.05
    Original price
    $1,761.05
    $1,761.05 - $1,761.05
    Current price $1,761.05
  • Original price $2,310.18 - Original price $3,149.14
    Original price
    $2,310.18 - $3,149.14
    $2,310.18 - $3,149.14
    Current price $2,310.18

    Transfer Flow Fuel Transfer Tank Tool Box Combo with Pump

    Transfer Flow

    The Transfer Flow Fuel Transfer Tank Toolbox Combo comes with a 12 volt GPI fuel transfer pump. The tank has a steel design and is available in 40 ...

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    Original price $2,310.18 - Original price $3,149.14
    Original price
    $2,310.18 - $3,149.14
    $2,310.18 - $3,149.14
    Current price $2,310.18
  • Original price $1,161.00 - Original price $1,404.00
    Original price $1,161.00 - Original price $1,404.00
    Original price $1,161.00
    $1,055.00 - $1,276.00
    $1,055.00 - $1,276.00
    Current price $1,055.00

    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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    Original price $1,161.00 - Original price $1,404.00
    Original price $1,161.00 - Original price $1,404.00
    Original price $1,161.00
    $1,055.00 - $1,276.00
    $1,055.00 - $1,276.00
    Current price $1,055.00
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  • Original price $1,745.26 - Original price $1,870.62
    Original price
    $1,745.26 - $1,870.62
    $1,745.26 - $1,870.62
    Current price $1,745.26

    Transfer Flow Low Profile Under Tonneau Auxiliary Fuel Tank

    Transfer Flow

    The low profile Transfer Flow auxiliary fuel tank is designed to fit under tonneau covers.  Choose from 40 or 50 gallon sizes. Either option offers...

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    Original price $1,745.26 - Original price $1,870.62
    Original price
    $1,745.26 - $1,870.62
    $1,745.26 - $1,870.62
    Current price $1,745.26
  • Original price $2,467.73 - Original price $3,293.60
    Original price
    $2,467.73 - $3,293.60
    $2,467.73 - $3,293.60
    Current price $2,467.73

    Transfer Flow Auxiliary Fuel Tank Tool Box Combo

    Transfer Flow

    The Transfer Flow auxiliary fuel tank and toolbox combo is the best of both worlds, providing more fuel and secure storage for all your adventures....

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    Original price $2,467.73 - Original price $3,293.60
    Original price
    $2,467.73 - $3,293.60
    $2,467.73 - $3,293.60
    Current price $2,467.73
  • Original price $1,925.00
    Original price $1,925.00 - Original price $1,925.00
    Original price $1,925.00
    Current price $1,750.00
    $1,750.00 - $1,750.00
    Current price $1,750.00

    ATTA DOT Approved Transfer Tank Toolbox

    ATTA

    ATTA transfer tank & toolbox combo with transfer pump holds 45 gallons and is DOT approved for use with diesel, gasoline, kerosene, ethanol, me...

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    Original price $1,925.00
    Original price $1,925.00 - Original price $1,925.00
    Original price $1,925.00
    Current price $1,750.00
    $1,750.00 - $1,750.00
    Current price $1,750.00
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  • Original price $904.00 - Original price $1,459.00
    Original price $904.00 - Original price $1,459.00
    Original price $904.00
    $822.00 - $1,326.00
    $822.00 - $1,326.00
    Current price $822.00

    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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    Original price $904.00 - Original price $1,459.00
    Original price $904.00 - Original price $1,459.00
    Original price $904.00
    $822.00 - $1,326.00
    $822.00 - $1,326.00
    Current price $822.00
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  • Original price $949.00 - Original price $1,372.00
    Original price $949.00 - Original price $1,372.00
    Original price $949.00
    $863.00 - $1,247.00
    $863.00 - $1,247.00
    Current price $863.00

    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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    Original price $949.00 - Original price $1,372.00
    Original price $949.00 - Original price $1,372.00
    Original price $949.00
    $863.00 - $1,247.00
    $863.00 - $1,247.00
    Current price $863.00
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  • Original price $1,747.00 - Original price $2,029.00
    Original price $1,747.00 - Original price $2,029.00
    Original price $1,747.00
    $1,485.00 - $1,725.00
    $1,485.00 - $1,725.00
    Current price $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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    Original price $1,747.00 - Original price $2,029.00
    Original price $1,747.00 - Original price $2,029.00
    Original price $1,747.00
    $1,485.00 - $1,725.00
    $1,485.00 - $1,725.00
    Current price $1,485.00
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40 Gallon Rectangular Aluminum Fuel Transfer Tank

ATI offers a range of aluminum fuel transfer tanks in the 40 gallon size range.  With multiple options you can choose the right measurement size and fuel tank capacity to match your bed size. 

Each ATI transfer tank is DOT Approved which means you can hold gasoline, diesel, kerosene, methanol or aviation fuel in the transfer tank.

Choose the 43 gallon fuel transfer tank for a notched 51 inch bottom length that offers more space in between the pickup bed wheels.

Standard Rectangle Measurements:

  • 42 gallon – 48.5 inches long by 19 inches wide by 12 inches high
  • 46 gallon – 57 inches long by 12 inches wide by 16.5 inches high

Notched bottom Measurements:

  • 43 gallon – 58 inches top length / 51 inches bottom length by 12 inches wide by 16.5 inches high
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40 Gallon Fuel Transfer Tank with Pump

If you need a fuel transfer tank with the ease of a built-in fuel transfer pump, we recommend taking a close look at this option from Transfer Flow.

Transfer Flow makes steel fuel transfer tanks with a sleek black powder coat finish that really shine in the back of a pickup bed. The powder coat finish turns heads but also offers superior corrosion resistance to prevent rust and maintain its pristine finish year round. 

The 40 gallon size comes with your choice of 12V GPI fuel pump or methanol pump.  Since this tank is DOT approved, you have your choice a fuel type to store in this transfer tank.

Measurements

  • 40 gallon – 40 inches long by 23 inches wide by 24.1 inches high
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40 Gallon Below Bed Rail Transfer Tank

ATTA offers a nice low profile DOT Approved aluminum fuel transfer tank. This tank is a great option for people who need a transfer tank to stay underneath a tonneau cover or below a bedcover.

Since this tank is DOT approved, you have your choice of fuel that you can hold in this tank. The 38 gallon size is designed for hard covers and the 41 gallon size is designed for soft covers.

Dimensions:

  • 41 gallon – 60 inches long by 18 inches wide by 14 inches high
  • 38 gallon - 60 inches long by 12 inches wide by 15 inches high
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40 Gallon L-Shaped Transfer Tank

Try this L-shaped fuel transfer tanks to pair with an existing truck toolbox or underneath other equipment you have on your truck.  With a DOT Approved transfer tank, you can store your choice of fuel in this tank.

The 19 inch height will let you store this tank underneath most tonneau covers, but you should still double check your tonneau cover height to be sure the height will work with your truck bed. 

Measurements

  • 47 gallon – 36.25 inches long by 30 inches wide by 19 inches high
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40 Gallon Fuel Tank Toolbox Combo

Fuelbox offers a diesel fuel tank toolbox combo designed to provide a nice combination of tool storage while also holding up to 40 gallons of fuel.

This tank is designed to fit under most standard tonneau covers.

Dimensions:

  • FTC44T: 40 gallon – 62 inches long by 20 inches wide by 17.5 inches high
  • FTC60T: 45 gallon - 62 inches long x 23 inches wide x 17.5 inches high
ATTA DOT Approved Transfer Tank Toolbox 45 gallon

40 Gallon Fuel Transfer Tank Toolbox Combo

If you need a DOT approved transfer tank toolbox, ATTA offers a nice option.

This tank is available with a notched or un-notched design.

Dimensions:

  • AT45TTF: 45 gallon* - 60 inches long by 20 inches wide by 19 inches high
  • AT50CAT: 50 gallon - 60 inches long by 20 inches wide by 19 inches high.

*Notched bottom length