ATI 41 Gallon Rectangle Diesel Auxiliary Fuel Tank 1ATI 41 Gallon Rectangle Diesel Auxiliary Fuel Tank 2ATI 41 Gallon Rectangle Diesel Auxiliary Fuel Tank 3ATI 41 Gallon Rectangle Diesel Auxiliary Fuel Tank 4ATI 41 Gallon Rectangle Diesel Auxiliary Fuel Tank 5
Lead Time:  3-10 Days
Ships From: Florida

Add Lockable Tank Cap?:

Black Powder Coat?:

Inside Cab Fuel Gauge?:

Tank Mounted Fuel Gauge?:

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The ATI 41 Gallon Rectangle Diesel Auxiliary Fuel Tank is an excellent addition to your work truck.

Diesel installation kit available for all Ford, Dodge and GM models (Select the correct model from the drop down box above).

The rectangle aluminum Auxiliary Tank is the most popular in the lineup. Our standard diesel auxiliary fuel tanks range from 30 to 80 gallons.

The included diesel FUEL SHOTZ installation kit can be installed in less than an hour. The unique system connects the auxiliary tank to the factory tank via the factory filler. The auxiliary tank keeps the factory tank full. When the auxiliary tank is empty your factory fuel gauge will move off the full mark. The system installs quickly and easily. No wires or switches to install. The system has rollover protection on the tank and on the factory fill neck adapter. Detailed Instructions are supplied with the Fuel Shotz installation kit.


  • Diamond plate .125" aluminum construction. (Heavy duty .190" aluminum is also available - please contact us for a quote!)
  • Quick easy installation
  • Tanks are baffled to reduce movement of contents
  • No wires or switches to install
  • Rollover protection
  • Automotive style fill cap
  • Hold down brackets
  • Pressure and leak detection test
  • Clean and free of debris inside and outside of the tank
  • 1 year limited warranty

PLEASE NOTE: The vent on this fuel tank has been moved to the TOP CENTER of the tank. The picture shows the vent next to the filler neck and this is no longer accurate per an engineering design change.
Manufacturer: Aluminum Tank IndustriesAluminum Tank Industries
Detailed Information

PDF  Auxiliary Tank Installation Instructions

Need a custom tank? No problem! Please click here to fill out this form and send to us!

ATI Diesel Fuel Tank Sizes

ATI Rectangle Shape Tanks

* AUX51 is 55" across the bottom - Sides of tank taper in at bottom
** AUX65R is 54" across the bottom - Sides of tank taper in at bottom
Aluminum Tank Industries (ATI) Warranty Details:

Aluminum Tank Industries, Inc. warrants all products to be free of defects in material or workmanship for a period of 1 year from invoice ship date from our warehouse. Severe Series tanks are covered for 5 years. If upon our inspection we deem the item to be defective, Aluminum Tank Industries, Inc. will determine whether to repair or replace the defective item. It is the customers responsibility to ship the item to Aluminum Tank Industries, Inc. No cost for labor, installation, or missing contents will be reimbursed. Damages due to shipping and handling, improper installation, abuse

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