Best Boat Gas Tanks of 2025

Jason Kiser Avatar
Jason Kiser
Last Updated: Jan 14, 2025

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Boat gas tanks are an essential part of any boating experience. These tanks are specially designed to store and transport fuel for boats, ensuring that they have enough gas to power through the water. Boat gas tanks come in a variety of sizes, materials, and shapes, depending on the type of boat and the amount of fuel needed. They are typically made of heavy-duty plastic or stainless steel and can hold anywhere from a few gallons to hundreds of gallons of fuel. Some boat gas tanks also come with built-in gauges and vents to help monitor fuel levels and prevent spills. Overall, these tanks are a crucial component for any boater looking to hit the open water with confidence.

At a Glance: Our Top Picks

Scepter 12 Gallon Marine Fuel Tank Cover #TOP 1
Scepter 12 Gallon Marine Fuel Tank
ftb score rating icon 9.9
GAOMON 3-Gallon Marine Fuel Tank Cover #TOP 2
GAOMON 3-Gallon Marine Fuel Tank
ftb score rating icon 9.8
GAOMON 6 Gallon Portable Fuel Tank Cover #TOP 3
GAOMON 6 Gallon Portable Fuel Tank
ftb score rating icon 9.6

Top 10 Boat Gas Tanks

Scepter 12 Gallon Marine Fuel Tank

08668
23 x 14 x 14 Inches
Scepter 12 Gallon Marine Fuel Tank Cover
Scepter Portable Rectangular Tall Profile Marine Fuel Tank Caddy, Fuel Can Container with Vented Cap for Boats and Watercraft, 12 Gallon

The Scepter Marine Fuel Tank is designed for boaters who need a reliable fuel source for their outboard engines. With a 12-gallon capacity and a portable size, it ensures you can enjoy longer trips without worrying about refueling. The unique 2-way vented cap allows for smooth operation by letting air in and releasing pressure when needed, enhancing safety during use. Its tall profile and integrated handholds make transporting and storing the tank a breeze. Additionally, the built-in gauge provides a convenient way to monitor fuel levels, so you can keep track without any hassle.

What We Like
No leaks when installed correctly
Well-made and robust design
Good fuel capacity
Easy hose hookup
Zero odor from vented cap
What We Don't Like
Some swelling in the sun
Draining can be challenging

GAOMON 3-Gallon Marine Fuel Tank

Marine Fuel Tank
3 Gallon(12L)
GAOMON 3-Gallon Marine Fuel Tank Cover
GAOMON Marine Fuel Tank, 3-Gallon Outboard Marine Portable Fuel Tank with Fuel Line, I-Shaped Handle, Easy to Carry

The GAOMON Marine Fuel Tank is designed for convenience and reliability. Its durable construction means it can withstand wear and tear, giving you peace of mind while refueling. The ergonomic I-shaped handle allows you to carry the tank effortlessly, making it easy to refuel your boat wherever you are. With a built-in fuel level indicator and filter, you can quickly check how much fuel is left and ensure it’s clean. Additionally, the adjustable sealing and venting system helps prevent leaks, making your refueling process safer and more efficient.

What We Like
Includes a gauge
Well constructed
Compatible with factory hose
Functions well with OMC motor
What We Don't Like
Cheap-feeling hose and connectors
Loose connection with some outboards

GAOMON 6 Gallon Portable Fuel Tank

tank1
6 Gal
GAOMON 6 Gallon Portable Fuel Tank Cover
GAOMON 6 Gallon Portable Tank,Easy-to-Carry Replacement Fueling Tank With Handle

The GAOMON Portable Fuel Tank offers a reliable solution for your boating needs. With its 6-gallon capacity, you can easily carry enough fuel for your adventures, ensuring you can refuel your boat whenever necessary. Its user-friendly design makes it simple to fill up, saving you time and hassle. This portable tank is perfect for various water activities, from fishing to sailing, allowing you to enjoy your time on the water without worry. Plus, its durable construction guarantees long-lasting performance, giving you peace of mind during your excursions.

What We Like
Good quality tank
Space-saving dimensions
Quality fittings and fill cap
What We Don't Like
Thin-walled hose
Leaked at hose attachment

Attwood 8806LPG2 6-Gallon Portable Marine Boat Fuel Tank

8806LPG2
6-Gallon
Attwood 8806LPG2 6-Gallon Portable Marine Boat Fuel Tank Cover
attwood 8806LPG2 EPA and CARB Certified 6-Gallon Portable Marine Boat Fuel Tank with Gauge

The Attwood 8806LPG2 6-Gallon Portable Marine Boat Fuel Tank is a great choice for boaters looking for a reliable and durable fuel tank. It features an automotive-grade, multi-layer construction that can withstand the pressure build-up associated with closed fuel systems, and a cap with a built-in vacuum valve for easy venting. It meets EPA and CARB regulations, and complies with all ABYC/NMMA requirements for portable marine fuel tanks. Customers report that it works perfectly, is easy to use, and is a great bargain.

What We Like
Great price point
Accurate fuel gauge
Compact and lightweight
Good quality material
Easy to use
What We Don't Like
Potential swelling in heat
Cap may require modification
#TOP 5

VEVOR 12 Gallon Marine Fuel Tank

LD-YG-P55
VEVOR 12 Gallon Marine Fuel Tank Cover
VEVOR Boat Marine Fuel Tank, 12 Gallon/55L, Portable Fuel Gas Tank for Outboard Engine Boats, Plastic Outboard Marine Boat Fuel Tank with Hose, Easy to Carry for Yacht, Fishing Boat, Deck Boat, Red

The VEVOR Marine Fuel Tank is designed for convenience and reliability. Its innovative cap features two settings, allowing you to easily switch between sealed and vented modes, ensuring smooth fuel flow while minimizing leaks. You’ll appreciate the strong compatibility with a 9.8 ft fuel hose, making it suitable for various outboard motors, whether you're fishing or relaxing on a deck boat. Built from durable polyethylene, this tank resists aging and corrosion, ensuring long-lasting performance. The portable design and bottom grooves make it easy to transport and store, fitting conveniently under boat seats.

What We Like
Better quality than expected
Effective for my needs
High outlet design
Good size for small boats
What We Don't Like
Hose/bulb issues
Requires slow filling
#TOP 6

attwood 8803LP2 3-Gallon Portable Marine Boat Fuel Tank

8803LP2
3 Gallon
attwood 8803LP2 3-Gallon Portable Marine Boat Fuel Tank Cover
attwood 8803LP2 EPA and CARB Certified 3-Gallon Portable Marine Boat Fuel Tank

The attwood 8803LP2 3-Gallon Portable Marine Boat Fuel Tank is an automotive-grade, multi-layer construction that is designed to withstand the pressure build-up associated with closed fuel systems. It is compatible with ¼-inch NPT fuel fittings and meets EPA and CARB regulations. It also complies with all ABYC/NMMA requirements for portable marine fuel tanks. Customers have noted that the vent in the cap does not seem to allow enough air in, and that the tank will swell up in the sun due to EPA regulations.

What We Like
Compact and lightweight design
Durable thick plastic construction
Easy to fit under boat seats
Good for inline use with engines
Long-term usability expected
What We Don't Like
Fuel line connection can feel flimsy
Tank design may lead to bulging
#TOP 7

Attwood 8812LPG2 12 Gallon Fuel Tank

8812LPG2
Standard Profile
12 Gal
Attwood 8812LPG2 12 Gallon Fuel Tank Cover
Attwood 8812LPG2 EPA Certified 12 Gallon Portable Fuel Tank with Gauge

The Attwood 12 Gallon Tank is designed with automotive-grade materials that can handle the pressure from closed fuel systems, ensuring durability during use. Its cap features a built-in vacuum valve, eliminating the hassle of manual venting, which makes refueling more convenient for you. This tank meets all EPA and CARB regulations, so you can trust that you're using an environmentally friendly product. Additionally, it complies with ABYC/NMMA standards for portable marine fuel tanks, providing peace of mind while you're out on the water.

What We Like
Large fuel capacity
Durable construction
Functional fuel gauge
Ideal for long runs
What We Don't Like
Pressure relief issues
Heavy when full
#TOP 8

GAOMON 15-Gallon Marine Fuel Tank

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GAOMON 15-Gallon Marine Fuel Tank Cover
GAOMON Marine Fuel Tank, 15-Gallon Outboard Marine Portable Fuel Tank with Fuel Line, I-Shaped Handle, Easy to Carry

The GAOMON Marine Fuel Tank offers a reliable solution for your boating needs. Made from high-quality materials, this durable tank resists aging and impact, ensuring it stands the test of time. Its ergonomic I-shaped handle allows for easy transport, so you can refuel your boat wherever you are. With a fuel level indicator and built-in filter, you’ll always know how much fuel is left and ensure it’s clean. Additionally, the advanced sealing and venting system provides safety by reducing fuel leakage while allowing for easy pressure release.

What We Like
Durable construction
Easy to carry
Clear fuel level indication
Safe sealing system
#TOP 9

Moeller Marine EPA-Compliant Topside Fuel Tank - 6 Gallons

620049LP
Moeller Marine EPA-Compliant Topside Fuel Tank - 6 Gallons Cover
Moeller Marine EPA- Compliant Topside Fuel Tank - 6 Gallons, Low Profile, Model# 620049LP

The Moeller Marine EPA-Compliant Topside Fuel Tank is a 6-gallon polyethylene tank with an overall dimension of 13 1/2" W x 21 1/4" L x 10" H w/ Cap. It is designed for vehicle-specific fit and comes with a gauge. Customers have praised its quality and sturdiness, but noted that the EPA-mandated cap can be prone to leaking or not venting.

What We Like
Functions as advertised
No leaks with vent closed
Great quality
Compatible with various engines
Manual vent cap useful
What We Don't Like
Finding right fuel connector tricky
#TOP 10

Scepter 08576 Portable Marine Fuel Tank

08576
3.2 Gallon
Scepter 08576 Portable Marine Fuel Tank Cover
Scepter 08576 OEM Portable 3.2 Gallon Marine Fuel Tank For Outboard Engine Boats, 14-Inches x 10-1/2-Inches, x 9-Inches, Red

The Scepter Portable Fuel Tank is designed for easy transport, making it perfect for small fishing boats and dinghies. Its compact design features molded feet that elevate the tank, promoting ventilation and stability while allowing for convenient storage under your seat. You’ll appreciate the 2-way vented cap, which automatically regulates air flow during operation and releases pressure when needed, ensuring safe usage. Built from durable, UV-stabilized HDPE, this tank is resistant to rust and corrosion, providing long-lasting reliability for your marine adventures.

What We Like
Lightweight and easy to carry
Well-made and durable
Fits in tight spaces
Effective fuel gauge
Convenient vent screw
What We Don't Like
Potential gauge assembly issues
Some leakage during installation
Buying Guide Image

The Complete Guide to Buying Boat Gas Tanks

Introduction

If you're planning a day or weekend out on the water, you'll need to make sure you have enough fuel to get you there and back. That's where boat gas tanks come in. Boat gas tanks are essential for ensuring your boat has enough fuel to get you to and from your destination. They come in a variety of shapes and sizes, so it's important to know what to look for when choosing one for your boat.

Considerations

Before purchasing a boat gas tank, there are a few things to consider. The size of the tank is the first and most important factor. Gas tanks come in a variety of sizes, so make sure to measure the space in your boat where you plan to install the tank before purchasing. You'll also want to consider the type of fuel the tank will be using. If you're using a gasoline-powered engine, you'll need a gasoline tank. If you're using a diesel-powered engine, you'll need a diesel tank.

Materials

When it comes to the materials of boat gas tanks, there are two main types: plastic and metal. Plastic tanks are the more popular option and they come in a variety of shapes and sizes. Plastic tanks are lightweight and affordable, but they can be prone to cracking over time. Metal tanks are the more durable option, but they are also heavier and more expensive. It's important to determine which material is best for your boat and your budget.

Safety

Safety is an important factor to consider when choosing a boat gas tank. Make sure to look for tanks that are UL (Underwriters Laboratories) certified as this certification ensures the tanks meet certain safety standards. Additionally, look for tanks that have a corrosion-resistant coating to prevent rust and protect the tank from the elements.

Installation

Once you have the right tank, it's time to install it. Make sure to read the instructions that come with the tank and follow them closely. If you're not comfortable with the installation process, you can always hire a professional to do it for you.

Maintenance

Once the tank is installed, it's important to maintain it properly. Make sure to check the tank regularly for any signs of wear and tear. Additionally, it's important to make sure the fuel is properly filtered and that the tank is properly vented. This will help to ensure the tank is functioning properly and will help to extend the life of the tank.

Conclusion

Choosing a boat gas tank is an important part of your boating experience. Make sure to take your time and consider the size, material, safety, installation, and maintenance of the tank before making your purchase. With the right tank and the proper maintenance, you can ensure that your boat is running efficiently and safely.

Frequently Asked Questions (FAQs)

1. What size are boat fuel tanks?

Boat fuel tanks come in various sizes, ranging from one-gallon to fifty-gallon capacity. Permanent fuel tanks, made of aluminum or plastic, are installed in the boat's hull and can hold ten to several hundred gallons of fuel.

2. Do boats need special gas?

Yes, boats require fuel with no more than 10 percent ethanol (E10). Using fuel with more than 10 percent ethanol, such as E15 or E85, should be avoided in marine engines.

3. How long do plastic marine fuel tanks last?

The average lifespan of a polyethylene fuel tank is around 20 years, depending on factors such as maintenance and usage. However, it is important to note that warranties on storage tanks may vary among manufacturers.

4. What is the most common gas tank size?

For cars, the average fuel tank capacity is 50-60 liters (12-16 US gallons). However, boat fuel tanks come in various sizes depending on the specific needs and requirements of the vessel.

5. Why are boat fuel tanks vented?

Boat fuel tanks are vented to relieve the pressure that builds up while filling the tank. Unlike pressurized fuel tanks in automobiles, boats require an air vent to prevent pressure buildup.

6. Why should a boat's gas tank never be completely filled?

It is important to never fill a boat's gas tank beyond 90% full. This allows room for gas to expand and prevents potential overflow. Additionally, it is important to ensure that all air vents and valves to the gas tank are open and to securely replace the gas cap after fueling.

7. Should I put premium gas in my boat?

The fuel requirements for a boat should be specified in the boat's manual. It is important to follow the recommended minimum fuel octane rating. High-performance engines may require a higher octane rating than the standard 87 octane.

8. What is the problem with plastic fuel tanks?

Plastic fuel tanks may start to deteriorate after 10 to 12 years of service, potentially leading to issues such as flaking off the inside of the tank and clogging the fuel filter. In such cases, replacing the fuel filter and the fuel tank is necessary.

9. Are plastic or metal fuel tanks better?

Steel fuel tanks are less likely to leak excess fuel and are generally heavier than plastic tanks. Plastic tanks are lighter but may be more permeable. The choice between plastic or metal fuel tanks depends on factors such as weight, permeability, and specific requirements.

Editor's Notes

During our boat gas tank research, we found 24 boat gas tank products and shortlisted 10 quality products. We collected and analyzed 34,471 customer reviews through our big data system to write the boat gas tanks list. We found that most customers choose boat gas tanks with an average price of $73.69.

The boat gas tanks are available for purchase. We have researched hundreds of brands and picked the top brands of boat gas tanks, including Scepter, GAOMON, Attwood, VEVOR, Moeller. The seller of top 1 product has received honest feedback from 385 consumers with an average rating of 4.7.

Written by
Jason Kiser Avatar

Jason Kiser is an editor who lives in California, he previously worked in a travel agency for ten years, which enabled him to travel a number of interesting countries and experience several different cultures along the way. His range of job and travel experiences grant him expertise in hiking, camping, outdoors and fitness.

Boat Gas Tanks Comparison Table

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Brand Scepter GAOMON GAOMON Attwood VEVOR Attwood Attwood GAOMON Moeller Scepter
Material High Density Polyethylene (HDPE) Metal High Density Polyethylene (HDPE) - - High Density Polyethylene (HDPE) - - Polyethylene (PE) Polyurethane (PU)
Item dimensions L x W x H - 14.1 x 11.8 x 10.6 inches - - 24.8 x 18.31 x 12.2 inches 16.6 x 11.45 x 7.37 inches 22.75 x 14.25 x 14.47 inches 24.8 x 18.5 x 11.81 inches - 14.3 x 10.4 x 9.2 inches
Exterior Finish - Polished - - High-Density Polyethylene HDPE Plastic Brushed Plastic - Machined
Fit Type - Universal - - - Vehicle Specific Universal - Vehicle Specific Vehicle Specific
FTB Score
ftb score rating icon 9.9
ftb score rating icon 9.8
ftb score rating icon 9.6
ftb score rating icon 9.6
ftb score rating icon 9.4
ftb score rating icon 9.3
ftb score rating icon 9.1
ftb score rating icon 9.1
ftb score rating icon 9.0
ftb score rating icon 9.0
Where to Buy