It is important to have the best auxiliary gas tank. We are here to help you choose the best one for your needs from all the best available products in market today.

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Our Top Picks:

Best Overall: Buy: Nipponasia Auxiliary Gas Tank READ REVIEW

Best With Filler Neck: Buy: Redrock Performance Auxiliary Gas Tank READ REVIEW

Best For Easy Maintenance: Buy: Titan Fuel Tanks Auxiliary Gas Tank READ REVIEW

Best For Gas: Buy: Dee Zee Auxiliary Gas Tank READ REVIEW

Best For Pickup: Buy: Rds Mfg Inc Auxiliary Gas Tank READ REVIEW

Best Overall: Nipponasia Auxiliary Gas Tank

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The tank is a must have add-on for your daily use. The Nipponasia Auxiliary Gas Tank is suitable for gravity fueled auxiliary fuel tank, only for diesel. Make sure this fits by entering your model number. Also, it is good for low - quality clamps and it is good for fast delivery.

The tank includes accessories, hose and clamp, easy to install. Further, it provides consistent gravity feed of fuel. Above all, the nipponasia auxiliary gas tank is designed to work with a 3/8-inch female pipe thread drain fitting.

Most buyers agree that the tank has to be 1 1/4" pipe on your truck. In addition, they also found that the tank is a perfect addition to functionally operating the 37 gallon aux tank. Also, a few also found that the tank is great for gravity feeding. hose clamps are complete junk that won’t even get snug before popping loose and striping out needed better hose clamps. With no doubts, this tank passed the test and had very satisfied buyers eager to share their experience.

• This is easy to install and a good value for the money.
• This is installed at the 12o'clock position per the installation directions.
• The kit is 1 1/4 " some newer trucks require 1 1/2.
• This is special is designed for easy installing and it works perfectly.

Best With Filler Neck: Redrock Performance Auxiliary Gas Tank

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Next on the list, we've got yet another tank that manages to win our hearts. It's the Redrock Performance Auxiliary Gas Tank and it's widely considered as the tank that has the most suitable features. The redrock performance auxiliary gas tank is fitment and it is black. If you do not understand the installation instructions, please inform us immediately. The RDS auxiliary tank is easy to install and provides a stable gravity fuel supply to control the fuel level from the oe tank.

Lastly, the redrock performance auxiliary gas tank is compatible with ford & dodge 2012 & older, chevy / gmc 2011 & newer.

Almost all customers found that the tank was made of rubber worked great and easily. And, they say that the tank works well and it's nice to not have to pump fuel to the main tank. Further, they say that this valve opened and the tank full the main tank started oozing gas out of it and actually dripping on the floor. With no doubts, this tank passed the test and had very satisfied buyers eager to share their experience.

• This is designed for 3/8" female fuel outlet fittings.
• This is capable of fitting that truck very nicely.
• This is easier, it is designed for good fit and has a good design.
• This worked fine and it fit well.

Best For Easy Maintenance: Titan Fuel Tanks Auxiliary Gas Tank

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The Titan Fuel Tanks Auxiliary Gas Tank has killer features for the price point. The titan fuel tanks auxiliary gastank is made with great service and it is good for country of origin. Make sure this fits by entering your model number. And, this allows for easy install, comes with fuel tanks and it fits fine.

Lastly, the titan fuel tanks auxiliarygas tank is made for easy installation and it is tough.

Most customers quickly discovered that the tank fits perfect with a fifth wheel hitch in the bed also. And, a few strongly agree that the tank makes good stuff. Additionally, it is a perfect fit under the bed cover. Also, a few also found that the manufacturer stated in the installation manual that the tank is for diesel fuel only. Overall, at the price, they believe that they got a steal of a deal with it.

• Package dimensions: 48.26 cms (l) x 53.34 cms (w) x 154.94 cms (h).
• The fuel enters the main tank via the tank vent line.
• This is simple, go further and it is made with good products.
• This fits under most bed covers.

Best For Gas: Dee Zee Auxiliary Gas Tank

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Compared with other tanks in this category, the Dee Zee Auxiliary Gas Tank has a convenient design. The dee zee auxiliary gas tank is built with full weld stability baffles, fits great and it has a drain plug. Make sure this fits by entering your model number. Also, the tank is great for gas cap, it fits well and has a good design.

The tank is very happy and it straight forward. And, the tank fits in front of the truck bed. Above all, the dee zee auxiliarygas tank is safe and it allows for a great fit.

Most buyers found that the tank had an extra hole on top. Also, they say that the tank is designed for gas but should say so. And, they strongly agree that the tank looks great when installed, but only gave it four stars because the fuel transfer rate is very slow. Overall, many have used the tank for more than a few months without any complaints, and it shows no sign of giving up.

• Hydrostatically pressure tested to 29 psi.
• The Manufacturer says: our extensive product lines are built with you in mind.
• This will vary, but at least 6 inches higher than the top height of the tank.
• This is compatible with center - mounted transfer pumps.

Best For Pickup: Rds Mfg Inc Auxiliary Gas Tank

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We would, of course, be remiss if we didn't mention RDS mfg inc auxiliary gastank for daily purpose. The RDS MFG inc auxiliary gas tank is allowed, if siphoned from the top of the tank by using an electric fuel pump. Rds offers a full assortment of tanks in various capacities and dimensions to fit your needs. And, the tank has a drain plug, it is easy to find and has a good design. Above all, the Rds Mfg Inc Auxiliary Gas Tank is simple, is great for gas caps and it is built with good product.

Most customers agree that the tank comes with a smooth aluminum finish. Further, a few strongly agree that this means this tank automatically delivers fuel to the main gas tank. To sum up, buyers found this to be one of the best tanks for daily purposes.

• Auxiliary tanks connect to your vehicle’s fuel tank.
• This rds vertical diesel fuel transfer / auxiliary tank will not include mounting hardware.
• New and hot releases.