Best 12-Gallon Boat Gas Tanks of 2025

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.

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.

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.

The Attwood 8812LP2 12-Gallon Portable Marine Boat Fuel Tank is an automotive-grade, multi-layer construction that withstands the pressure build-up associated with closed fuel systems. It meets EPA and CARB regulations and complies with all Abyc/Nmma requirements for portable marine fuel tanks. It features a cap with a built-in vacuum valve, eliminating the need for manual venting. However, it does not have a fuel gauge and can swell in the sun.

The Moeller Marine Topside Fuel Tank is a high-quality motor engine fuel tank designed for boats. With a capacity of 12 gallons, this low-profile tank is perfect for storing fuel during your boating adventures. The tank is made of durable glass material, ensuring long-lasting performance. Its compact size, measuring 26.0L x 20.0W x 12.0H inches, allows for easy installation on your boat. The Moeller Marine Topside Fuel Tank is EPA-compliant, ensuring it meets all necessary safety and environmental standards. With this fuel tank, you can enjoy peace of mind knowing that you have a reliable and efficient fuel storage solution for your boat.

The Moeller Marine 12 Gallon Below Deck Permanent Fuel Tank is a machined aluminum tank made of corrosion and pit-resistant plastic. It is ABYC-compliant and has a UV rating of 8 and a temperature rating of -40°F to 176°F. It comes with a molded fill neck and withdrawal/vent fittings, and a 360° swivel poplock for hook-up convenience. Customers have praised its durability and cost-effectiveness, though some have noted that the fuel gauge accuracy can be off.

The Scepter Marine Fuel Tank is designed for convenience and durability. Its 12-gallon low profile makes it easy to transport, thanks to integrated handles. You will appreciate the fuel tank sight gauge, which accepts standard fittings, including the included Yamaha male fuel connector, ensuring compatibility with your outboard engine. The high-quality brass and aluminum fittings of the Yamaha certified connector provide a reliable connection for fuel withdrawal. Plus, this tank meets EPA emissions regulations and is certified for safety, giving you peace of mind while on the water.

The Alocs Manual Vent Gas Cap is designed for compatibility with older portable gas tanks. Its twist valve allows you to easily adjust ventilation, ensuring a tight fit without leaks. This feature is beneficial for maintaining optimal fuel flow while you’re on the water. The cap is compatible with various tank sizes, making it a versatile choice for boaters. Made from durable, high-quality plastic, it resists rust and corrosion, promising a long lifespan. Plus, it’s user-friendly; simply turn the cap to vent your tank without needing any tools.

The Cobalt Livewell Tank is made from durable white plastic and has a generous capacity of 12 gallons, perfect for keeping your catch fresh while out on the water. With overall dimensions of 28 3/8" in length, 13 3/4" in width, and 14 1/2" in height, it fits well in most boats without taking up too much space. The cutout dimensions ensure it can easily be integrated into your boat setup. Additionally, the interior dimensions allow for ample storage, enhancing convenience for your fishing trips.

The Fudatong Boat Fuel Tank is designed for convenience and durability, making it ideal for small and large boats, inflatables, canoes, and kayaks. Its direct fit installation allows you to get started quickly, ensuring you can enjoy your time on the water without delay. Made from high-density polyethylene, this tank is resistant to aging and impacts, providing long-lasting performance. The ergonomic I-shaped handle makes it easy to carry and store, enhancing your overall experience. With a capacity of 12 liters (3 gallons), it ensures you have enough fuel for extended outings.