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AUX80 Auxiliary Tank "L" Shaped
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ATI L-Shape Auxiliary Diesel Fuel Tank 80 Gallon

Includes Gravity Feed Diesel Installation Kit for AUX Tanks

AUX80 Auxiliary Tank "L" Shaped
$856.99 - $1,070.99
0.00 LBS
  • Special Permit issued by the US Department of Transportation
  • Legal for Gas , Diesel, Methanol, Kerosene, Aviation fuel and other liquids
  • Commercial grade lockable vent/prevent filler capCommercial Grade Lockable Fill Cap
  • Fully baffled to reduce movement of contents

Tank Measurements in Inches

Part Number Color Gallons A B C D E F G
AUX80L Brite or Black 80 9.5 48.50 28 26 8 16.5 20




Similar Capacity Tanks Have Different Shapes.  Review Each Before You Decide.

We're sorry we don't have pictures of the black tanks. 

"Custom Colors, Sizes, and Configurations Possible Call For Quote"


'L' Shaped Auxiliary Diesel Fuel Tanks by ATI Feature

  • Includes Fuel Shotz Kit to easily attach to factory fuel system
  • No switches or wires to install
  • Automotive style filler cap
  • Fully baffled to reduce the movement of tank contents
  • 2" npt reinforced bung for superior strength
  • Welded hold down brackets
  • The tank is pressure tested for leaks and inspected internally by video.
  • Tanks are clean and free of debris inside the tank
  • 1 year limited warranty

'L' is for Leeway - built for versatility, ATI's L-shape Auxiliary Tanks were designed to be used with a crossover style toolboxes or chest boxes. The bottom of the L-shape fits under most standard toolboxes and a chest box can be mounted (carefully) in the L to form a rectangle. They can be mounted with the open area facing rearward or forward. The L shape also allows for clearance in most 5th wheel or Gooseneck bed mounted hitch applications.

Go Further and Longer - adding this diesel auxiliary fuel tank can gives you an additional 80 gallons on top of your factory installed tank's capacity, more than tripling your range in most cases. Not to be confused with "Transfer Tanks", these rectangular auxiliary tanks are not designed to be used with external pumps. The vehicle fitment list on this page is for the installation kit only. It does not ensure the fit of the tank.

No Guesswork - ATI auxiliary tanks increase your driving range and fuel capacity by as much as 80 gallons by connecting directly into your factory fuel tank through the factory filler neck. These tanks are designed for use with the included Fuel Shotz diesel install kits. This will keep your factory tank completely full until the auxiliary tank is empty. You will know your auxiliary tank is empty when your factory fuel gauge moves off the full mark. Auxiliary fuel tanks can also be used to supply fuel to the engine of machinery and equipment such as generators. Our auxiliary fuel tanks meet all the necessary DOT requirements.

Hook Up - The FUEL SHOTZ auxiliary fuel tank installation kit that is included is used to connect the auxiliary fuel tank to the factory fuel tank via the factory fill tube. The kit contains everything you need to make the connection from the auxiliary tank with a 3/8" NPT bottom fitting to the factory fill tube. The auxiliary tank keeps the factory tank full. When the auxiliary tank is empty your factory fuel gauge will move off the full mark. These kits are supplied with detailed instructions and take less than an hour to install. There are no wires or switches to install, engineered for rollover protection and only requires attaching the kit supplied 3/8" npt pipe fitting on the bottom of the tank in place of the drain fitting.

You Have a Little Work To Do - ATI offers many different configurations, capacities, and shapes but measuring the area you intend to mount your tank is the only way to correctly choose the right tank for your truck. Use our guide "How to Measure Your Truck Bed for a Transfer or Auxiliary Tank"

If you cannot find a fit for your truck or have any other questions please  contact us  for help.

What You Need To Know:

0.00 LBS
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