Aluminum Tank Industries, Inc. - Built Like a TANK
Main Number

L Shape Auxiliary Tanks

Our L-shape Auxiliary Tanks were designed to be used with a crossover style toolbox or chest box. The bottom of the L-shape fits under most standard toolboxes. The L shape also allows for clearance in most 5th wheel applications.


Important Notes:

  • Mounting tabs extend out 1 1/2″
  • Add 2 1/2″ for fuel cap height

How to measure L-Shaped Tanks

80 Gallon Auxiliary Tank - Part #AUX80L

“A” “B” “C” “D” “E” “F” “G” Gallons
9 1/2″ 48 1/2″ 28″ 26″ 8″ 16 1/2″ 20″ 80

L-Shape Auxiliary Tanks

ATI auxiliary tanks are used to increase driving range and fuel capacity by as much as 80 gallons. This is done by connecting directly into your factory fuel tank through the factory filler neck. These tanks are designed for use with our 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.

Aluminum auxiliary fuel tanks can also be used to supply fuel to the engine of machinery and equipment such as generators. We offer auxiliary fuel tanks for diesel and gas applications. Our auxiliary fuel tanks meet all the necessary DOT requirements.

We believe that in order to offer the best tank on the market, we need to start with the highest quality materials available. All of ATI’s tanks are manufactured here in the USA. Many manufacturers save a few dollars by outsourcing their fabrication without considering the overall quality of the finished product.

All ATI auxiliary tanks come standard with a 3/8″npt outlet, vent with rollover protection, automotive style fuel cap, and fully welded baffles to reduce slosh and add strength. These tanks are constructed from rugged diamond plate aluminum and are all available with a black or white powder coated finish. Custom tanks are available upon request. Click here to fill out a custom tank form.