
Boat fuel tanks are essential for the operational longevity of your boat. There are two main types of boat fuel tanks: portable and permanent. Portable tanks are designed to be easily removed from the boat and refilled at a fueling station, while permanent tanks are installed in the boat's hull and not meant to be removed. The capacity of marine fuel tanks varies, with personal boats often featuring smaller tanks and larger vessels equipped with larger permanent tanks. When considering where to buy a boat fuel tank, several online retailers offer a wide selection, including Amazon, Walmart, SierraParts, and Wholesale Marine. These retailers provide various options, from portable fuel tanks to permanent solutions, ensuring you find the right fuel tank for your boat.
| Characteristics | Values |
|---|---|
| Online retailers | Amazon, Walmart, SierraParts, Wholesale Marine, and Welding World Inc. |
| Types of fuel tanks | Portable and permanent |
| Portable fuel tank characteristics | Easily removable and refillable at a fueling station; usually made of plastic but also come in aluminum, polyethylene, and stainless steel; range in capacity from one to fifty gallons |
| Permanent fuel tank characteristics | Installed in the boat's hull; usually made of aluminum or plastic; can hold ten to several hundred gallons of fuel; more common on powerboats than sailboats |
| Prices | Range from $54.99 to $194.99 |
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What You'll Learn

Portable vs. permanent fuel tanks
Marine fuel tanks are either permanent or portable. Stern drive and inboard boats are equipped with permanent fuel tanks, which are installed in the hull and are usually located under the deck. These tanks are not meant to be removed and are usually made of aluminum or plastic. They can hold ten to several hundred gallons of fuel and are more common on powerboats than on sailboats.
On the other hand, portable fuel tanks can be easily removed from the boat and refilled at a fueling station. They are typically made of plastic and come in various sizes, from one-gallon to fifty-gallon capacities. Portable tanks are usually more affordable than permanent tanks, and they are easier to inspect and service. However, it is important to note that when filling portable tanks, they should always be placed on the ground, and the gas pump nozzle should remain in contact with the tank to avoid the risk of static electricity and potential explosion.
One advantage of permanent fuel tanks is their larger capacity, which means you don't have to worry about running out of fuel as frequently. They are also more out of the way and don't take up valuable floor space. However, they can be more expensive to install and maintain, and the additional weight of the fuel and the tank itself can be a drawback.
Portable fuel tanks offer the convenience of being able to refill them at a gas station without having to stop at the fuel dock with your boat. They are also more affordable and can be easily stored and transported. However, the smaller capacity of portable tanks means that you may need to bring multiple tanks or refill them more frequently.
When deciding between a portable or permanent fuel tank, it is important to consider factors such as cost, convenience, capacity, weight, and maintenance. Both options have their advantages and drawbacks, and the best choice will depend on your specific needs and preferences.
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$65.99 $72.99

Online retailers
There are several online retailers that sell boat fuel tanks.
Amazon
Amazon.com offers a range of boat fuel tanks with prices ranging from $54.99 to $94.99. The product pages provide information on delivery times and buying options.
Wholesale Marine
Wholesale Marine carries a wide selection of permanent marine fuel tanks from RDS and Moeller Marine. Their representatives can guide customers towards the best option for their boats. Wholesale Marine also offers the Captain's Club Rewards Program, which provides customers with discounts on future purchases.
Walmart
Walmart.com offers a 30-gallon mobile fuel tank with dual wheels and a manual pump for $189.99. This product is suitable for marine vessels, vehicles, lawn equipment, and ATVs. Walmart also offers a similar product with quad wheels for $193.99.
SierraParts
SierraParts.com offers a range of premium portable boat fuel tanks in different shapes and capacities. Their tanks are built to withstand harsh marine conditions and are made from materials such as rugged aluminum, resilient polyethylene, and sturdy stainless steel.
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Fuel tank capacity
The capacity of a boat's fuel tank is an important consideration when purchasing one. The size of the tank will depend on the type of boat and its intended use. Personal boats often have smaller tanks, while larger vessels are equipped with significantly bigger permanent tanks.
Portable fuel tanks, which are designed to be easily removed and refilled, typically come in sizes ranging from one-gallon to fifty-gallon capacities. They are usually made of plastic, but other materials include aluminium, polyethylene, and stainless steel. Aluminium is corrosion-resistant, making it ideal for saltwater environments, while polyethylene is impact-resistant, perfect for smaller craft.
Permanent fuel tanks, on the other hand, are installed in the boat's hull and are not meant to be removed. These tanks are typically made of aluminium or plastic and can hold ten to several hundred gallons of fuel. They are more common on powerboats than sailboats and are often found on larger vessels.
When choosing a fuel tank, it is important to consider the boat's engine size and fuel consumption rate, as well as the availability of refuelling stations. Additionally, the location and placement of the tank should be carefully planned to ensure the boat's balance and stability are not affected.
There are a variety of retailers that offer boat fuel tanks with different capacities, including Walmart, which offers 30-gallon mobile fuel tanks, and SierraParts, which offers a range of portable fuel tanks in different shapes and capacities.
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Fuel tank maintenance
Fuel tanks for boats can be purchased from online retailers such as Amazon and SierraParts.com. There are two main types of boat fuel tanks: portable and permanent. Portable tanks are designed to be easily removed from the boat and refilled at a fuelling station, while permanent tanks are installed in the boat's hull and are not meant to be removed.
Regardless of the type of fuel tank you have, proper maintenance is essential to ensure the smooth and efficient operation of your boat. Here are some detailed instructions for maintaining your boat's fuel tank:
Cleaning:
- If possible, remove the fuel tank from the boat for easier cleaning. Refer to your boat's manual for instructions on how to safely disconnect and remove the fuel tank.
- Inspect the inside of the tank using a flashlight. Look for any debris, sludge, water contamination, or bacterial matter.
- Use clean rags or paper towels to wipe down the interior of the tank. For tougher deposits, use a fuel tank cleaner or detergent specifically designed for marine fuel tanks.
- Rinse the tank thoroughly with clean water to remove any cleaning solution or debris. Ensure that the tank is completely dry before reassembling it. You can use a clean, dry cloth to speed up the drying process.
- While the tank is drying, replace any old fuel filters and inspect the fuel lines for cracks or damage. Replace any damaged lines to ensure a clean and efficient fuel system.
- Fuel polishing is another option for cleaning your fuel tank. This process involves "super cleaning" the tank to remove organic materials such as water, sludge, and algae.
Preventative Measures:
- Understand the type of fuel you are using and the quality of the fuel. Keep a sample of your fuel in a glass mason jar to monitor any visual degradation over time.
- If you have a black iron tank, keep it dry and epoxy-coated on the outside, and free of moisture on the inside to prevent rusting.
- Insulate aluminium tanks with high-density neoprene, plastic, or another non-moisture-absorbing material to prevent corrosion.
- Avoid using foam around the fuel tank, as it can trap water and cause gas leaks.
Fuel Tank Replacement:
Fuel tanks do not last forever and may eventually need to be replaced. Most fuel tanks last for 15 to 20 years if properly maintained and installed. Replacing a fuel tank can be a time-consuming and expensive process, so proper maintenance is essential to prolong the life of your fuel tank.
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Fuel tank installation
Boat fuel tanks come in two main types: portable and permanent. Portable tanks are designed to be easily removed from the boat and refilled at a fuelling station. They are usually made of plastic and come in various sizes, from one-gallon to fifty-gallon capacity. Permanent tanks, on the other hand, are installed in the boat's hull and are not meant to be removed. These tanks are typically made of aluminium or plastic and can hold ten to several hundred gallons of fuel.
When installing a boat fuel tank, careful consideration and planning are required. The location and placement of the tank are crucial to ensuring its security and stability. It is important to choose a stable surface, such as hull stringers, and avoid placing the tank at the bottom of the hull. The location should not interfere with the boat's balance or stability. It is also essential to check that the tank meets all relevant safety regulations and standards before installation.
One common material for boat fuel tanks is aluminium. While some people blame aluminium for being a bad material choice, the problems with aluminium tanks are often due to improper installation rather than the material itself. Properly installed aluminium tanks can outlast the life of the boat. To prevent corrosion in aluminium tanks, eliminate all points that trap water, as severe corrosion is caused by the combination of water and a lack of oxygen, known as "crevice corrosion". Additionally, use only stainless steel pipe fittings for the fuel supply, and ensure that straps or securing devices do not cause crevice corrosion.
Another important consideration during fuel tank installation is serviceability and accessibility. Once the tank is installed, all "serviceable" components, such as fill, vent, and supply fittings, should be easily accessible and visible. Covering or sheathing the tank for cosmetic or acoustic purposes may hinder the identification of leaks, corrosion, or other issues. Therefore, it is recommended to keep the tank visible and accessible for inspection and maintenance.
Finally, it is crucial to inspect your tank installations regularly. If your metallic tanks are covered with an aesthetic or acoustic barrier, consider improving access for inspection purposes. By identifying potential problems early, you can avoid costly failures and ensure the longevity of your boat's fuel system.
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Frequently asked questions
You can purchase a boat fuel tank online from websites such as Amazon, SierraParts, Walmart, and Wholesale Marine.
There are two main types of boat fuel tanks: portable and permanent. Portable tanks are typically made of plastic and can be easily removed and refilled, while permanent tanks are installed in the boat's hull and are usually made of aluminum or plastic.
The capacity of marine fuel tanks varies depending on the size of the boat. Personal boats often have smaller tanks, while larger vessels are equipped with bigger permanent tanks that can hold ten to several hundred gallons of fuel.
Aluminum tanks are extremely strong, corrosion-resistant, and can last for many years if kept away from moisture. Polyethylene tanks are impact-resistant and ideal for smaller craft. Stainless steel tanks are also an option for their durability.
When purchasing a boat fuel tank, consider the size, material, and placement of the tank. Ensure that the tank meets safety regulations and does not interfere with the boat's balance or stability. Also, check for compatibility and consider taking advantage of rewards programs or discounts offered by certain retailers.










































