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ATI 46 Gallon Rectangle Gasoline Auxiliary Fuel Tank

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ATI 46 Gallon Rectangle Gasoline Auxiliary Fuel TankATI 46 Gallon Rectangle Gasoline Auxiliary Fuel TankATI 46 Gallon Rectangle Gasoline Auxiliary Fuel TankATI 46 Gallon Rectangle Gasoline Auxiliary Fuel TankATI 46 Gallon Rectangle Gasoline Auxiliary Fuel Tank
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Aluminum Tank Industries
3-10 Days

$227.48 (27% Off)

Available Options:

Add 1" Filler Neck Adapter?:

Add Hose & Clamp Kit?:

Add Lockable Tank Cap?:

Black Powder Coat?:

Inside Cab Fuel Gauge?:

Tank Mounted Fuel Gauge?:



The ATI 46 Gallon Rectangle Gasoline Auxiliary Fuel Tank is a necessity for serious truck owners. Our aluminum auxiliary fuel tanks for gas are built to meet and exceed Title 49 CFR 393.65 for fuel tanks. The all aluminum .125" thick HD fuel tank was specifically designed for gasoline. All standard gas models come with the following features:

  • Vent fitting with rollover protection
  • Fuel pickup fitting
  • Fuel return fitting
  • Automotive style fuel filler cap
  • 3/8" npt drain fitting
  • Fully welded baffles to reduce content movement
  • Visual, pressure and video leak detection test
  • Tanks cleaned inside and out prior to shipping
  • Mounting Tabs
  • 1 Year limited warranty

The rectangle aluminum Auxiliary Tank is the most popular in the lineup. Our standard gas auxiliary fuel tanks range from 30 to 65 gallons. If you want to keep most of your bed space check out our more slender aluminium fuel tank designs. We also have a lay down style that fits under most crossover toolboxes.

Be sure to add the optional tank mounted fuel gauge or cabin mounted fuel gauge to keep track of your fuel levels!

The gasoline auxiliary tank connects into the factory fuel system through the filler neck hose (optional 1 inch filler neck adapter available). The gasoline auxiliary tanks install very similar to the diesel ones, however it is not legal to gravity feed out of the bottom of the auxiliary tank with gasoline. By law, the fuel must be pulled from a fitting on TOP of the auxiliary tank. We add a pickup tube to the gas auxiliary tanks with a hose barb on the top of the tank. You must use a pump (low volume universal fuel pump - We recommend the Airtex E84070) with a switch in cab to pull the fuel from the top of the aux tank and pump it into the factory tank via the fill neck hose.

We do offer the 1" fill neck adapters (optional) which work with most gas trucks. These adapters have two 3/8" hose barbs; one where your fuel comes in and one where we recommend running a return line back to the auxiliary tank. We also offer a hose and clamp kit (optional) that comes with 8 feet of hose, which should be enough to run from the aux tank to the pump, the pump to the filler neck adapter, and then a return line from the filler neck adapter back to the aux tank.

On some trucks, you may to run another hose from the vent on the aux tank and "T" into the vent line that runs along with the filler neck hose. This will close the system to ensure you don't get check engine or loose gas cap lights. Another option is to simply cap/plug the vent on the tank and the auxiliary tank will vent through the factory tank via the return line.

NOTE: Due to the California Air Resource Board (CARB) regulations, we will NOT offer gasoline auxiliary fuel tanks for sale in the state of California for the purpose of connecting to the vehicles factory fuel system. Our diesel auxiliary tanks and all refueling tanks for gas or diesel WILL remain available for sale in the state of California.

Detailed Information

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) Shipping & Return Details:

On arrival, inspect the shipment immediately for obvious signs of damage. If any item is damaged to the point that you do not want the product, do NOT sign for the shipment and do NOT take possession of the product. The freight carrier will then be responsible for returning the product back to the factory, and we will arrange a replacement product to be sent back out. When you sign for a shipment you are signing that it is in good condition and you accept the shipment. This will relieve the freight carrier of any claims!

Should you determine that any items are missing, you MUST note the missing items on the delivery ticket and contact Customer Service to report any issues. You should open cartons and containers. If there is the slightest doubt that the merchandise is damaged (concealed or not) refuse the shipment and do not sign for delivery.

Products that are damaged in transit are the responsibility of UPS or the freight carrier. We advise you to carefully inspect all incoming goods when they are received and note any missing or damaged products on the shipping documents at the time of delivery. If you accept a shipment by signing the carrier's delivery documents without noting a damage or shortage, it will not be the responsibility of Aluminum Tank Industries, Inc.(ATI) to file claims on your behalf. ATI will gladly file a claim for any damage or shortage noted on the delivery document at the time of delivery. ATI can only file a claim for shipments shipped on ATI's freight account.

Product Returns

Returns will not be accepted without prior authorization and an accompanying RGA #. Please clearly mark the assigned RGA# on all returned shipments. Unauthorized returns will be refused. Returned items should be in original boxes, complete and in new condition. A 15% restocking fee will apply. No returns will be authorized after 90 days from the ship date. To return an order, please contact Customer Service to obtain a RGA number. Unfortunately we can not accept or credit any returned product without an RGA number. Please note that all freight charges will be the responsibility of the customer and return freight must be prepaid. Returned products must be in original packaging, unused and in sellable condition. If the product is returned in unsellable condition, we will not issue a refund.

Freight costs on all items being returned will be at the expense of the customer. All items should be shipped FREIGHT PREPAID to the nearest return location. Item(s) must be returned within ninety (90) days of the delivery date to be eligible for reimbursement consideration. TankAndBarrel.com is not responsible for the cost of packaging, shipping, or returning the item(s) if the applicant changes his or her mind after item(s) are in transit back to the manufacturer or has already been received by the manufacturer.

Upon receiving the product in new condition and undamaged, we will refund you the purchase price of the product minus the 15% restocking fee and actual freight charges from the original shipment to you.


Orders for ATI tanks can be cancelled as long as they have not yet shipped from the factory. Once an order has shipped it cannot be canceled.

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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