Best_Boat_Fuel_Tanks

If your boat has an outboard motor installed, you’ll need a sufficient amount of fuel to run it. Even though every motor has a small fuel tank inside, it won’t get you very far. For truly exploring the water, you’ll need to have a portable gas tank on-board.

Choosing a tank is mostly based on your motor’s fuel consumption and the space you have on the deck. To help you equip your engine with an optimal fuel source, our boat gas tank reviews will go in detail to present the best boat gas tanks with all their pros and cons.

1

OUR TOP PICK

Scepter 12 Gallon Red Boat Fuel Tank

Scepter 12 Gallon Red Boat Fuel Tank


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Summary

Large 12-gallon capacity and exceptional HDPE construction are the two main reasons why the Scepter 12-gallon slowly became one of the most popular marine gas tanks. This boat gas tank is EPA-compliant and comes with a two-way valve that automatically releases pressure when it gets over 5 PSI. Considering the quality, the Scepter 12 tank is also very affordable, making it a fantastic deal.

  • What Makes This Outboard Motor Gas Tank Stand Out
  • Made of tough UV-stabilized High-Density Polyethylene
  • One-piece tank shell significantly reduces fuel evaporation
  • Automatic 2-way valve releases pressure above 5 PSI
  • Molded-in handles make carrying and transportation easy
MODEL & ACCESSORY SPECS

Capacity: 12 gallons
Dimensions: 22.9 x 14.3 x 13.9 inches
Weight: 6.75 pounds
Fitting: 1/4-inch NPT
Safety Regulations: EPA

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2

EDITORS CHOICE

Five Oceans 6 Gallon Portable Boat Fuel Tank

Five Oceans 6 Gallon Portable Boat Fuel Tank


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Summary

At just under 9 inches tall, Five Oceans boat gas tank fits perfectly under most boat seats. This 6-gallon fuel tank won’t take up too much space, but still has plenty of juice for your adventures. The top comes with an NPT fuel hose fitting at a 90° angle, as well as a high-contrast fuel gauge. As a cherry on top, you will also get a 1-year warranty with the purchase.

  • What Makes This Outboard Motor Gas Tank Stand Out
  • Ergonomic molded handle on top
  • High-contrast fuel gauge for easy level control
  • Safe to use with ethanol-blended fuels
  • Eco-friendly design (doesn’t vent fuel vapor)
MODEL & ACCESSORY SPECS

Capacity: 6 gallons
Dimensions: 23 x 11.4 x 8.8 inches
Weight: 8 pounds
Fitting: 1/4-inch NPT
Safety Regulations: ISO 13591 IMCI (non-EPA)

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3

BEST VALUE

Attwood 3 Gallon Portable Boat Fuel Tank

Attwood 3 Gallon Portable Boat Fuel Tank


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Summary

If you want a boat gas tank that is compact and reliable, Attwood 3 gallon model is an excellent option. Thanks to its small dimensions, it fits into any space on the boat. Another great detail about this model is its multi-layered walls that are incredibly safe and withstand high pressure. Lastly, if you also take the price into account, this model gives you exceptional value for money.

  • What Makes This Outboard Motor Gas Tank Stand Out
  • Vacuum valve in the cap allows automatic venting
  • Compact dimensions to easily fit into small spaces
  • Multi-layer construction withstands pressure build-up
  • Fully compliant with CARB and EPA regulations
MODEL & ACCESSORY SPECS

Capacity: 3 gallons
Dimensions: 7.4 x 11 x 16.5 inches
Weight: 4.28 pounds
Fitting: 1/4-inch NPT
Safety Regulations: EPA and CARB

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4

Scepter 08669 Low Profile Boat Fuel Tank

Scepter 08669 Low Profile Boat Fuel Tank


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Summary

Despite having a volume of 12 gallons, Scepter 08669 boat gas tank comes with a low profile for easier fitting. This top-rated boat fuel tank is made from high-density polyethylene to prevent any leaks, while the safety cap automatically releases pressure over 5 PSI. In addition to the tethered cap and the standard NPT fitting, it also has a built-in fuel level gauge.

  • What Makes This Outboard Motor Gas Tank Stand Out
  • Molded feet significantly improve stability
  • Strong High-Density Polyethylene construction
  • Combination of a fuel pick-up and level gauge
  • Automatic pressure release over 5 PSI
MODEL & ACCESSORY SPECS

Capacity: 12 gallons
Dimensions: 24.3 x 18.1 x 10.7 inches
Weight: 7.9 pounds
Fitting: 1/4-inch NPT
Safety Regulations: EPA

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5

Five Oceans 3 Gallon Portable Boat Fuel Tank

Five Oceans 3 Gallon Portable Boat Fuel Tank


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Summary

A fantastic space-saver, the Five Oceans 3 Gallon boat gas tank is ideal for small boats. These high-quality boat plastic gas tanks have low permeation, containing all the vapor inside. And, when pressure builds up, you can easily release it manually. On top of this, the tank cap comes with a built-in fuel gauge so you can see how much you have left.

  • What Makes This Outboard Motor Gas Tank Stand Out
  • Compact size is perfect for smaller boats
  • Meets international safety requirements
  • Convenient 90-degree placement for the fuel lines
  • Strong grab handle on top for easy carrying
MODEL & ACCESSORY SPECS

Capacity: 3 gallons
Dimensions: 14 x 10 x 9 inches
Weight: 3.6 pounds
Fitting: 1/4-inch NPT
Safety Regulations: ISO 13591 IMCI

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6

Scepter 6 Gallon Under Seat Boat Fuel Tank

Scepter 6 Gallon Under Seat Boat Fuel Tank


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Summary

The great thing about Scepter Marine EPA tank is that it comes in two sizes (3 and 6 gallons). As its name suggests, it’s EPA compliant and built from strong materials. While it has self-venting, the process can be a bit slow so it can swell a bit. Finally, the tank has 1/4-inch NPT fuel fitting, and right next to it there is a fuel level gauge.

  • What Makes This Outboard Motor Gas Tank Stand Out
  • Available in two different sizes (3 and 6 gallons)
  • Sight gauge for controlling the fuel level
  • Two-way vented cap releases pressure when it’s too high
  • Wide base with molded feet remains stable on the boat
MODEL & ACCESSORY SPECS

Capacity: 3 and 6 gallons
Dimensions: 19.3 x 12.2 x 6.8 inches (3 gallons)
Fitting: 1/4-inch NPT
Safety Regulations: EPA

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7

Moeller Seamless Portable Boat Fuel Tank

Moeller Seamless Portable Boat Fuel Tank


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Summary

The quality of the plastic on the Moeller marine seamless fuel tanks is truly impressive. The thick walls have no seams or weak spots, making them up to 30% stronger than all the other products. Thanks to this, the tank completely leak-proof and meets all safety standards. We also like that it comes with a strong molded handle for easy carrying.

  • What Makes This Outboard Motor Gas Tank Stand Out
  • Thick-walled plastic construction with impressive strength
  • Rotating fuel withdrawal for more convenience in use
  • Tether on the cap so it doesn’t get lost
  • Covered by a two-year manufacturer’s warranty
MODEL & ACCESSORY SPECS

Capacity: 6 gallons
Dimensions: 21.5 x 13.18 x 10.1 inches
Weight: 7.8 pounds
Fitting: 1/4-inch NPT
Safety Regulations: EPA, CARB, ABYC, NMMA

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8

Moeller Sight Gauge Portable Boat Fuel Tank

Moeller Sight Gauge Portable Boat Fuel Tank


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Summary

The design of this Moeller fuel tank is completely oriented towards performance and functionality on the boat. It’s much larger than most others (12 gallons), with plenty of petrol or diesel fuel for hours of cruising. On the other hand, its shape still keeps it manageable when trying to find space for it on the deck. Also, it has a sight gauge on the cap to easily check the fuel level.

  • What Makes This Outboard Motor Gas Tank Stand Out
  • Sight gauge for controlling the fuel level
  • Seamless wall construction for improved strength
  • Fully compliant with all EPA regulations
  • Equipped with a two-way safety cap
MODEL & ACCESSORY SPECS

Capacity: 12 gallons
Dimensions: 24.51 x 17.76 x 10.82 inches
Weight: 9.61 pounds
Fitting: 1/4-inch NPT
Safety Regulations: EPA, CARB, ABYC, NMMA

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9

Moeller Topside 15 Gallon Boat Fuel Tank

Moeller Topside 15 Gallon Boat Fuel Tank


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Summary

Thanks to its 15-gallon capacity, Moeller marine topside is one of the best boat gas tanks for large outboard engines. And, if this is still too small, you can get it in 22 and 24-gallon versions too. Keep in mind that this model is very large, so measure carefully to see whether it can fit on the boat. Lastly, the entire construction is very durable and guaranteed to last long.

  • What Makes This Outboard Motor Gas Tank Stand Out
  • Huge capacity makes it great for larger motors
  • Fuel gauge on cap for easily checking the level
  • Low profile design to save on-board space
  • Cross-linked poly construction with UV-stabilization
MODEL & ACCESSORY SPECS

Capacity: 15 gallons
Dimensions: 42.50 x 14.75 x 8.71 inches
Weight: 18.6 pounds
Fitting: 3/8-inch NPT x 1/4-inch NPT
Safety Regulations: ABYC/NMMA, U.S. Coast Guard

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10

Attwood 8806LP2 EPA and CARB Certified Boat Fuel Tank

Attwood 8806LP2 EPA and CARB Certified Boat Fuel Tank


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Summary

Attwood 8806LP2 is one of the most user-friendly tanks that you’ll come across. Thanks to the built-in vacuum valve in the cap, these fuel tanks will vent automatically when the pressure inside gets too high. The design complies with all the rules and regulations, so it’s very safe to use on the boat. It’s also worth noting that you can get it with or without a fuel level gauge.

  • What Makes This Outboard Motor Gas Tank Stand Out
  • Multi-layer construction withstands pressure build-up
  • Vacuum valve in the cap (no need for manual venting)
  • Available with or without a fuel level gauge
  • Fully compliant with all safety regulations
MODEL & ACCESSORY SPECS

Capacity: 6 gallons
Dimensions: 9.37 x 13.25 x 19.25 inches
Weight: 5.1 pounds
Fitting: 1/4-inch NPT
Safety Regulations: EPA, CARB, ABYC/NMMA

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How To Choose A Boat Fuel Tank – Buying Guide

How_To_Choose_A_Boat_Fuel_Tank

Portability

Since you’ll need to take the tank on and off the boat, portability is very important. The tank shouldn’t be too heavy or uncomfortable to carry. It’s always a plus if the boat gas can has a handle because it makes the job a lot easier.

Capacity

Most small tanks vary in capacity between 3 and 15 gallons. While a larger tank is heavier to carry, it gives your motor a running fuel line for a longer time. The best boat gas tank will be somewhere in the middle, balancing between weight and capacity.

Size

Boat fuel tanks are usually not very compact, so you’ll need to plan where you’re going to put them. It’s ideal if you can put it somewhere out of the way (under the seat for example). For this reason, many manufacturers offer tanks in different shapes.

FAQs

What_Is_A_Boat_Fuel_Tank

Q: What Is A Boat Fuel Tank?

A: 

A boat fuel tank is a specially-designed container that holds and supplies fuel to your outboard motor. Depending on the boat design, there are permanent aluminum tanks (installed under the deck) and portable tanks.

Q: Is It Safe To Keep Full Fuel Tank On A Boat?

A: 

Yes, outboard fuel tanks are perfectly safe to keep on a boat thanks to their construction and safety features. However, we advise that you fill it up to 90% because the gas expands and it can damage the tank.

Q: How And Where Do I Store The Fuel Tank?

A: 

For safety reasons, most marine fuel tanks need to be stored bottom down on a flat deck surface to prevent leaks and accidents. Also, it’s a good idea to strap the tank and prevent it from moving.

Q: How Long Does A Boat Fuel Tank Last?

A: 

For safety reasons, most marine fuel tanks need to be stored bottom down on a flat deck surface to prevent leaks and accidents. Also, it’s a good idea to strap the tank and prevent it from moving.

Q: How Do You Carry More Fuel On A Boat?

A: 

You do this by packing several portable fuel tanks on the boat. Keep in mind, however, that these are often quite large and require lots of space. Also, a full tank can be pretty heavy and impact the boat's performance.

Q: How Does Water Get In Boat Gas Tank?

A: 

The most common way of water getting inside the tank is condensation. As a result of the differences in temperature, the vapor from the air inside the tank will condensate on the walls. If there’s too much water inside, it can potentially damage the engine.

Globo Surf Overview

Without the best boat fuel tank on your boat, the engine will quickly run dry. The quality of the tank you choose is very important, and you should make sure it complies with all the personal and environmental safety regulations.

With the help of our reviews and guide, we’re sure that you’ll be able to find the best boat gas tank that will be easy to use and provide a reliable fuel line to your engine.

More Boat Reviews:

Have you tried a boat fuel tank that made it onto our list? Is it reliable and durable? How big is it? Please share with us in the comment section below.

Globo Surf
My name is David Hamburg. I am an avid water sports fan who enjoys paddle boarding, surfing, scuba diving, and kite surfing. Anything with a board or chance I can get in the water I love! I am such a big fan I decided to start this website to review all my favorite products and some others. Hope you enjoy!