The 9 Best Auxiliary Fuel Tank Kits (2022 reviews)

auxiliary fuel tank kits
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If you are looking for collection of best auxiliary fuel tank kits, You have landed on the right page.

Our review process:

Our Top Picks:

Best Overall:
Buy: Rds Mfg Inc Truck Tank
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Best For Gravity:
Buy: Nipponasia Auxiliary Fuel Tank
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Best For Fast Delivery:
Buy: Redrock Performance Auxiliary Fuel Tank Kit
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Best For Trailer:
Buy: Rds Mfg Inc Auxiliary Fuel Tank Kit
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Best With Pump:
Buy: Guziko Auxiliary Fuel Tank Kit
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Best With Dodge Diesel Trucks:
Buy: Nipponasia Auxiliary Fuel Tank Kit
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Best For Gas:
Buy: Dee Zee Auxiliary Fuel Tank Kit
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Best With Following Vehicles:
Buy: Tadyao Auxiliary Fuel Tank Kit
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Best For Simple Installation:
Buy: Tadyao Fuel Tank
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Best Overall: Rds Mfg Inc Truck Tank

Rds Mfg Inc Truck Tank
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Rds Mfg Inc makes beautiful and great kits with classic and higher-grade materials. The Rds Mfg Inc Truck Tank is best for good fit, comes with part number and it works flawlessly. An optional diesel install kit contains the necessary items to economically and easily connect your RDS tank to your own fuel tank. And, it works perfectly and it is worth the money.

The tank is black and it installed easily. And, it has followed the directions, is positive and it is made for easy install. Finally, the rds mfg inc truck tank is made with great service and has a perfect design.

Almost all customers opine that the kit has changed in the 2020's is the outside. Also, a few strongly agree that the tank has a ball type valve in it. And, they strongly agree that this install kit will fit any chevy, gmc trucks from 2011 to the current year. Overall, for almost all buyers, it was just what they wanted.

Top Customer Quotes:
  • This will almost stop fuel flow when the tank is full.
  • This will fit 2014 ram dually.
  • Auxiliary tanks connect to your vehicle’s fuel tank.
  • This comes with a good product, works fine and it works perfectly.

Best For Gravity: Nipponasia Auxiliary Fuel Tank

Nipponasia Auxiliary Fuel Tank
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Best part: Nipponasia Auxiliary Fuel Tank costs comparatively low and it is available to ship in 24 hours. The nipponasia auxiliary fuel tank provides consistent gravity feed of fuel. The auxiliary fuel tank is connected to the vehicle's fuel tank, If you use an electric fuel pump to draw gas from the top of the fuel tank, you can perform gasoline auxiliary fueling. In addition, it includes accessories, hose and clamp, easy to install.

The tank is special and it works perfectly. Finally, the nipponasia auxiliary fuel tank is designed to work with a 3/8-inch female pipe thread drain fitting.

Almost all buyers quickly discovered that the kit is a perfect addition to functionally operating the 37 gallon aux tank. Also, a few strongly agree that the kit is easy to install and good value for the money. Further, a few say that the kit is 1 1/4 " some newer trucks require 1 1/2.

Top Customer Quotes:
  • 3. kit includes accessories, hoses and clamps.
  • This was installed without issue and it is fitment.
  • This is good for low quality clamps and it comes with good products.
  • This is good for fast delivery, is easier and it works perfectly.

Best For Fast Delivery: Redrock Performance Auxiliary Fuel Tank Kit

Redrock Performance Auxiliary Fuel Tank Kit
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The Redrock Performance Auxiliary Fuel Tank Kit's material feels more premium than its price would suggest. The redrock performance auxiliary fuel tank kit includes fittings, hoses and clamps, as well as the required hoses and hardware. 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.

The kit is compatible with ford & dodge 2012 & older, chevy / gmc 2011 & newer. Above all, the redrock performance auxiliary fuel tank kit is best for good fit, It is unique and has a good design.

Almost all buyers opine that the tank works well and it's nice to not have to pump fuel to the main tank. And, they strongly agree that the kit can be used in an auxiliary fuel tank, diesel only. And, they also found that the tank was made of rubber and worked great and easily. Overall, many buyers have used the kit for more than a few months without any complaints, and it shows no sign of giving up.

Top Customer Quotes:
  • The kit controls fuel levels in your oem tank to prevent overflow.
  • Closes the valve to prevent gas from escaping from the tank.
  • This is designed for 3/8" female fuel outlet fittings.
  • This can be trusted for good quality and it worked fine.

Best For Trailer: Rds Mfg Inc Auxiliary Fuel Tank Kit

Rds Mfg Inc Auxiliary Fuel Tank Kit
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If you want nothing but a kit that is suitable, this Rds Mfg Inc Auxiliary Fuel Tank Kit is certainly a wise investment. The rds mfg inc auxiliary fuel tank kit is great for tank size and it is made with good products. Auxiliary tanks connect to your vehicle’s fuel tank. Also, the tank is sturdy and it fits perfectly.

The tank looks good and it fits well. Most importantly, the RDS MFG inc auxiliary fuel tank kit is allowed, if siphoned from the top of the tank by using an electric fuel pump.

Most buyers find that the tank is a well built tank that is actually 37 gallons. In addition, they strongly agree that the tank can take a bit to get the suction hose right. Moreover, a few say that the overall dimensions of the tank are 52 " l x 21 " w x 11 1/2 " h. You would need to check the dimensions under your toolbox to see if it would fit and if you would have enough room to access the fill port. In short, many have used the kit for more than a few months without letup, and it shows no sign of giving up.

Top Customer Quotes:
  • This is designed for a great price and it follows the directions.
  • This will work with a fifth wheel hitch.
  • It is obvious they were off level by several degrees.
  • This includes hose, clamps and fittings.

Best With Pump: Guziko Auxiliary Fuel Tank Kit

Guziko Auxiliary Fuel Tank Kit
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Compared with other tanks in this category, the Guziko Auxiliary Fuel Tank Kit has a convenient design. The guziko auxiliary fuel tank kit is designed to work with a 3/8 inch female pipe thread drain fitting. If you use an electric fuel pump to draw gas from the top of the fuel tank, you can perform gasoline auxiliary fueling. The auxiliary diesel fueltank installation kit will for dodge trucks in 2013.

Lastly, the guziko auxiliaryfuel tankkit has fill line measurement and it is black.

Why We Like This:
  • This is oxidized and added with an anti-seize compound, and the thread is stronger.
  • It automatically controls the fuel level going into your oem tank.
  • New and hot releases.

Best With Dodge Diesel Trucks: Nipponasia Auxiliary Fuel Tank Kit

Nipponasia Auxiliary Fuel Tank Kit
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The features department is where Nipponasia auxiliary fuel tank kit truly manages to shine. Make sure this fits by entering your model number. Moreover, the kit is compatible with dodge diesel trucks through 2013. To sum up, with a 4.5 rating and more than 256 buyers, the Nipponasia Auxiliary Fuel Tank Kit stands as the best choice.

In short, at the price, they believe that they got a steal of a deal with it.

Why We Like This:
  • Work with a 3/8" female pipe thread drain fitting.
  • Feed diesel fuel directly into your fuel tank from your truck bed transfer tank.
  • Good investment for the long term.

Best For Gas: Dee Zee Auxiliary Fuel Tank Kit

Dee Zee Auxiliary Fuel Tank Kit
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Compared with other tanks in this category, the Dee Zee Auxiliary Fuel Tank Kit has a convenient design. The dee zee auxiliary fuel tankkit is convenient and it has a left hand. Connector kits to feed diesel directly into your fuel line are sold separately. Further, it is constructed of heavy gauge brite-tread aluminum.

The kit fits in front of the truck bed. Also, it has been a staple brand in the truck accessory market since 1977. Finally, the dee zee auxiliary fuel tank kit is very happy, It comes with a good product and has a good design.

Almost all customers agree that the kit does have baffles, and on the f350 the filler neck is above the rails. And, they also found that the tank will vary, but at least 6 inches higher than the top height of the tank. Further, they strongly agree that the tank is designed for gas but should say so. Obviously, this kit passed the test and had very satisfied buyers eager to share their experience.

Top Customer Quotes:
  • Hydrostatically pressure tested to 29 psi.
  • This is compatible with center - mounted transfer pumps.
  • This has a drain plug, fits great and it looks great.
  • Connect to oem fuel line to transfer diesel fuel.

Best With Following Vehicles: Tadyao Auxiliary Fuel Tank Kit

Tadyao Auxiliary Fuel Tank Kit
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Tadyao makes beautiful and great kits with classic and smartly chosen materials. The Tadyao Auxiliary Fuel Tank Kit is great for high quality material and it is made for a long service life. Complete set of clamps, hose and fittings, design for 3/8" female fuel outlet, save yourself from the hassle of missing accessories during installation. The vehicle 's fueltank is connected to the auxiliaryfuel tank to provide a stable fuel supply to control the fuel level.

Most importantly, the tadyao auxiliary fuel tank kit is compatible with the following vehicles fit for dodge diesel trucks in 2013.

Why We Like This:
  • Compatible models: fit for dodge diesel trucks 2013-current gravity fueled auxiliary fuel tank.
  • New and hot releases.

Best For Simple Installation: Tadyao Fuel Tank

Tadyao Fuel Tank
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Not everyone likes to purchase kit for their daily purpose, but the Tadyao Fuel Tank would be an anomoly. The tadyao fuel tank is high quality, is black, it has strong corrosion resistance and has an upgraded design. Fit for ford dodge 2012 and earlier, fit for Chevrolet gmc 2011 and later, gravity fueled auxiliary fuel tank, only fit for diesel. The vehicle 's fuel tank is connected to the auxiliary fuel tank to provide a stable fuel supply to control the fuel level.

Most importantly, the tadyao fuel tank is great for high quality material, is perfect for high quality and it is designed for easy install.

To sum up, most buyers call the tank suits best, and no one questions it.

Why We Like This:
  • This is compatible with the following vehicles.
  • Lot of satisfied buyers.