Fuel Up Right: 38 Best Gas Tanks for Boat Safety and Performance

Choosing the right gas tank for your boat is crucial for both safety and performance. This guide evaluates the most reliable boat gas tanks available, comparing their capacity, durability, and compatibility to help you find the perfect fit for your vessel.

As an Amazon Associate, I earn from qualified purchases!

Reviews

Moeller 031615BR Tank-Gas

The Moeller 15-gallon topside gas tank combines durable polyethylene construction with an injection-molded fill neck and 90-degree fuel elbow for trouble-free service. A mechanical sight gauge lets you keep an eye on the fuel level without opening the tank, while the vented fuel cap provides a secure grip duringfilling.

Moeller 12 Gallon Ethanol-Compliant Fuel Tank

Crafted from rotationally molded, cross-linked polyethylene, these ethanol- and biodiesel-compliant fuel tanks offer a robust alternative to traditional aluminum tanks. The seamless design and leakproof construction ensure long-term reliability, while the molded-in fill neck and vent fittings simplify installation and maintenance. With each tank conforming to ABYC, NMMA, and USCG standards, they provide a dependable solution for both gasoline and diesel storage.

Best Moeller Below Deck Fuel Tank

This tough fuel tank pairs a massive 35-gallon capacity with premium construction that resists corrosion and fuels pits. The rotationally molded design lets the tank take complex shapes while the molded-in fill neck and 360-degree swivel fitting make refueling a breeze. With approvals from the ABYC, NMMA, and USCG, it's built to last and keep your boat's fuel fresh.

Moeller Below Deck Boat Fuel Tank

This Moeller fuel tank holds 19 gallons and comes in white color with a molded fill neck and withdrawal/vent fittings. Made of rotationally molded polyethylene, it's both ethanol and biodiesel compatible. The tank includes a machined aluminum 3/8" withdrawal fitting with 360° swivel capability.

Moeller Marine 32560 60 Gallon Boat Fuel Tank

This sleek 60-gallon tank tucks neatly below deck, keeping your boat's center of gravity low while providing plenty of room for fuel. The molded plastic design handles both gasoline and diesel with ease, plus it includes that essential sending unit for monitoring your fuel levels. The tank's clever engineering, like the built-in hose fittings and convenient rotation cap, makes it a practical choice for any marine application.

Moeller Marine Fuel Tank

With its durable polyethylene construction and ethanol/biodiesel compatibility, this85-gallon fuel tank delivers years of reliable service for marine applications. The tank's integrated baffle plates and built-in fittings simplify installation, while its1 1/2" fill spout and generous 53.63" length accommodate various mounting configurations. The included sending unit and vent connection make it a hassle-free addition to your boat's fuel system.

Moeller Marine FTA001109BR Redi Fuel Tank

This Moeller Marine fuel tank delivers a practical storage solution with its EPA/CARB certification ensuring it meets all emission standards. The comprehensive step-by-step installation instructions make it a user-friendly addition to your boat's fuel system.

Moeller TANK-FUEL Below Deck Gas Tank, 50 Gal

The Moeller TANK-FUEL tank is a sleek storage solution that brings modern convenience to boat fuel management. Its cross-linked polyethylene construction handles everything from traditional gasoline to advanced biofuels with ease, while the aluminum fill spout makes it a breeze to top off your tank. Whether you're a weekend warrior or a serious angler, this tank keeps your boat's power supply clean and organized.

Moeller TANK-FUEL 24-Gallon Below-Deck Gas Tank

At 51 inches long, this 24-gallon tank stores enough fuel for extended boating trips while fitting neatly under the washboard. Its rotationally molded construction combines strength with flexibility, and the CE-certified design meets all major maritime safety standards. The molded fill neck and 360-degree swivel fitting make refueling quick and convenient, with the included hold-down kit providing secure installation.

12-Gallon Marine Diesel Tank with Ethanol Corrosion-Resistant Hose Tite Fittings

This 12-gallon fuel tank replaces the standard 5-gallon option, providing ample fuel capacity for weekend boating trips. Made from durable cross-linked polyethylene, the tank resists corrosion and ethanol damage, with a sleek aluminum filler neck that twists 360 degrees for easy connection to your fuel line. The molded vent fitting keeps the tank pressurized during refueling, while the swing-arm sender unit gives you an accurate fuel level reading in your dash gauge. The tank's compact design fits perfectly in existing mounting brackets, giving your boat's interior that much-needed extra space.

Moeller 30 Gallon Below Deck Fuel Tank

Made in the USA, this durable fuel tank is built to last with its corrosion-resistant polyethylene construction that's specifically enhanced for ethanol and biodiesel use. The clever design includes a built-in lever gauge, making it a breeze to keep track of your fuel levels. With its lightweight yet robust construction and included fill, vent, and withdrawal fittings, it's a solid choice for any boat upgrade.

Moeller 032528 TANK-FUEL Below Deck 28 Gal

This durable tank combines cross-linked polyethylene construction with ethanol and biodiesel compatibility, featuring a 28-gallon capacity with reversible mounting rails and a 10-degree angled transom mount. The included 3/8" machined aluminum withdraw fitting offers 360° swivel capability for convenient fueling, while the corrosion-resistant design meets all ABYC and USCG regulations for both gasoline and diesel use.

VETUS Atank 170L Blue Marine Fuel Tank

This Vetus fuel tank comes in a convenient 170-liter capacity, with a sturdy 5-7mm wall thickness that prevents any unpleasant odour leakage. The translucent light blue design makes it easy to see your fuel levels while the seamless construction means no more worrying about corrosion or leaks. With the same universal fitting code for diesel, waste water, or fresh water, this tank offers versatile marine storage that won't compromise on quality or reliability.

Moeller TANK-FUEL Below Deck Gas Tank

This 35-gallon tank brings together sleek design and practical features for your marine or RV setup. The machined aluminum fill spouts swivel 360 degrees for easy hook-up, while the corrosion-resistant construction handles both gasoline and diesel with ease. At just over seven pounds, it's light enough to install but sturdy enough to last through countless refills.

Moeller TANK-FUEL Below Deck Tank

Crafted from durable cross-linked polyethylene, this 29-gallon fuel tank is built to last, featuring a sleek design that looks great under your deck. The tank's molded fill neck withswivel hose fitting makes refueling a breeze, while its corrosion-resistant construction handles everything from regular gas to ethanol blends with ease. Whether you're a weekend warrior or serious boater, this tank ticks all the boxes for reliable on-water performance.

JC Whitney 13.2 Gallon Boat Fuel Tank

Made from galvanized steel with a painted finish, this direct-fit fuel tank holds 13.2 gallons (50 liters) and comes with a lock ring but lacks a filler neck and seals. It's sold individually and carries a 1-year JC Whitney warranty.

Moeller 032629 Fuel Tank

Made from tough, ethanol- and biodiesel-friendly cross-linked polyethylene, this 29-gallon boat gas tank protects your deck with its sleek, under-decks design featuring reinforced hose connections that swivel 360 degrees for easy fueling. The tank meets all the regulatory standards you'd expect, from ABYC to USCG, with the added peace of mind of CE certification for any international adventures you plan.

Ace Roto-Mold 12 Gallon White Boat Fuel Tank

At 18 inches long and 12 gallons in capacity, this white XLPE fuel tank offers a sizable storage solution for boats and other applications. The straightforward rectangular design keeps things simple, while the 3-year warranty provides some peace of mind. The only bummer is that getting the right tank can take longer than expected—still, it's the only one available in this size.

Moeller 31527 Gas Tank Topside

These Moeller topside tanks blend practical design with reliable performance, featuring UV-stabilized polyethylene construction and a generous 18-gallon capacity. The tank's distinctive white color matches most boat hulls, while the mechanical gauge offers clear fuel-level readings. The thoughtful design addresses common challenges like kinked fuel lines and awkward grip angles, making it a popular choice for marine applications.

Scepter Portable 9-Gallon Boat Fuel Tank

Crafted from UV-stabilized HDPE material, the 9-gallon portable fuel tank from Scepter Marine combines durability with practical features like a 2-way vented cap that prevents pressurization while ensuring safe fuel storage. The tank's smart design includes clear measurement indicators and secure grips for easy transport, making it a reliable addition to any boat's fuel system. Users praise its ability to prevent leakage and maintain accurate fuel readings, even when swelling occurs due to pressure changes.

Moeller Marine Below Deck Permanent Fuel Tank

The Moeller Marine below deck fuel tank combines durable cross-linked polyethylene construction with careful attention to detail. The precision-molded fill neck and vent fittings create airtight connections that exceed marine industry standards, while the UV-resistant epoxy finish protects the tank from environmental degradation. At just over 18 pounds, this 29-gallon tank mounts securely in tight spaces without adding excessive weight to your vessel.

Moeller 15 Gallon Below-Deck Fuel Tank

The Moeller 15 gallon fuel tank brings boat fuel management into the modern era with its rotationally molded polyethylene construction that's both lightweight and incredibly durable. The tank's thoughtful design includes a molded fill neck with Hose Tite connection and machined aluminum withdraw fitting that swivels 360 degrees for hassle-free attachment. It's worth noting that this tank comes in at 17.75 inches tall when you factor in the fill height, so make sure you've got the right space under your deck.

Moeller 19 Gallon Boat Fuel Tank

This Moeller fuel tank combines durable cross-linked polyethylene construction with precise manufacturing tolerances for reliable performance during refueling. The included 360° swivel fill fitting makes it easy to connect hoses, while the tank's 19-gallon capacity fits snugly in your boat's storage space. The transparent design lets you monitor fuel levels without lifting the tank.

Moeller 22 Gallon Below Deck Fuel Tank

This 22-gallon tank, made from ethanol- and biodiesel-compliant cross-linked polyethylene, comes with a molded fill neck featuring a swivel 3/8" aluminum withdraw fitting. The rotationally molded design allows for complex shape integration, while the molded hold-down grooves and precise fitting tolerances ensure secure installation and efficient fuel flow. Conforming to all relevant marine standards, the tank includes a pre-installed sending unit and three mounting points for versatile installation options, with dimensions of 14" L x 15" W x 21" H.

Moeller TANK-FUEL Below Deck 20 Gal Boat Gas Tank

Crafted from ethanol- and biodiesel-resistant materials, this corrosion-free fuel tank meets all ABYC standards with its seamless hose connections and UV-protected design. The molded fill neck and 360-degree swivel fitting make it a practical choice for both gasoline and diesel, though no diesel return is included. At just over 43 ounces when empty, the tank's light weight won't burden your boat's design.

Moeller 50-Gallon Below-Deck Fuel Tank

This 50-gallon fuel tank brings a big dose of below-deck convenience to your boat, with that generous capacity giving you a whole day of power at nearly full tank. The rotationally molded design handles complex shapes while the premium fittings — including that swiveling 3/8" aluminum withdraw fitting — make refueling a breeze. Compliance with ABYC, NMMA, and USCG standards means you're covered on the safety front, while the ethanol- and biodiesel-friendly construction takes care of keeping your tank in pristine condition.

VETUS 25L Plastic Fuel Tank

)

The VETUS 25L plastic fuel tank offers reliable storage with its high-grade polyethylene construction. The tank's practical design includes five bolt holes and a center point for a SAE gauge sender (which needs to be purchased separately). It meets the ISO 21487 standard, providing peace of mind for your boating needs.

Moeller Topside 24 Gallon Fuel Tank

)

Crafted from durable, UV-resistant polyethylene, this EPA/CARB compliant fuel tank meets stringent low-permeation standards. Its 24-gallon capacity features a 90-degree elbow for straightforward connector installation, a vented cap with sight gauge, and Moeller's "no leak" guarantee.

Moeller 28 Gallon Fuel Tank

These tanks combine impressive durability with convenient features like 360-degree swivel fittings, making them a standout option for both gasoline and diesel use. The cross-linked polyethylene construction handles ethanol and biodiesel with ease, while the CE-certified design ensures they meet all ABYC and USCG standards. With a generous 27-gallon capacity and a one-year manufacturer's warranty, they represent a solid investment for any boat's fuel system.

Boat Fuel Tank

The RDS rectangular marine fuel tank brings practical storage to your vessel with its spacious 55-gallon capacity. Made from tough aluminum with radius-bent corners, it handles both gasoline and diesel, featuring simple yet effective design elements like a 1/4-inch pickup and 1.5-inch fill port.

Moeller 82 Gallon Redi-Fuel Tank

)

This tank combines EPA/CARB certification with a generous 82-gallon capacity, featuring detailed installation instructions and 3/8-inch swivel fittings. The sleek, below-deck design maximizes space while ensuring compliance with all current evaporative emission standards. Available separately is a securing system that keeps the tank safely in place during rough seas.

Moeller Marine 29-Gallon Permanent Fuel Tank

This durable, cross-linked polyethylene fuel tank combines a 29-gallon capacity with premium fittings that exceed industry standards for both gasoline and diesel use. The tank's rotating fill spout and CE-certified components ensure a tight seal and reliable performance, while the tank's design meets all ABYC, NMMA, and USCG regulations for below-deck installations.

Moeller TANK-FUEL 23 Gal Below-Deck Tank

Made from tough cross-linked polyethylene, this 23-gallon fuel tank keeps your boat's gas supply clean with its ethanol and biodiesel compatibility. The tank's clever design features a built-in machined aluminum fill fitting that swivels 360 degrees for easy connection, while rotationally molded construction lets the manufacturer create a perfectly shaped storage space without weakening the tank. The included hold-down grooves make securing the tank simple, so you can focus on your navigation and fishing instead of refueling.

Moeller Marine Below Deck Permanent Fuel Tank

)

When you're outfitting your boat with a fuel tank that'll last, this Moeller Marine version ticks all the right boxes. It's made for serious use with marine-grade materials that won't rust like those aluminum tanks you might have seen before. The 17-gallon capacity lets you load up without hassle, and you can see exactly how much fuel you've got left through the clear walls. Just make sure to measure carefully—these tanks expand a bit when they fill up, so allow extra space for that.

Moeller TANK-FUEL Below Deck Gas Tank

Crafted from rotationally molded cross-linked polyethylene, this tank pairs a generous 72-liter capacity with precise 360-degree fitting rotation for hassle-free refueling. The aluminum withdrawal fitting handles both ethanol and biodiesel, while built-in hold-down grooves keep the tank secure beneath deck. Each detail from the molded fill neck to the stainless-steel brackets conforms to the strictest marine standards, giving your boat's fuel system the upgrade it deserves.

Moeller Marine Below Deck Permanent Fuel Tank

This Moeller Marine fuel tank has proven itself through mixed customer feedback, with some praising its quality and installation reliability while others struggle with proper mounting solutions. The tank's compatibility with boats built before 2011 makes it a viable upgrade option for older vessels, though potential users should be prepared for varying degrees of success with the included mounting hardware.

Moeller Marine Marine Fuel Tank

This robust fuel tank combines impressive capacity with thoughtful design features like the 360° swivel poplock fitting and UV-resistant construction. Made from machined aluminum, it's engineered to handle the rigors of marine use, with ethanol- and biodiesel-corrosion resistance keeping your powerlifting diesel engines running smoothly. The compact belly tank design tucks away neatly below deck, leaving your exterior space clutter-free while providing reliable storage for your boating adventures.

FastTackle 8806LPG2S 6 Gal Marine Boat Fuel Tank

The Attwood portable fuel tank features the same high-strength material as automotive fuel systems for reliable performance. Its robust construction includes a leak-free injection-molded design and an ergonomic handle for easy transport. The ratcheting cap with automatic vacuum valve ensures proper closure and prevents water intrusion.

Buyer's Guide

A reliable gas tank is crucial for any boat, providing the essential fuel that powers your aquatic adventures. Understanding the right specifications and features can significantly affect your boat's performance and safety. This guide outlines key considerations to help you select the appropriate gas tank for your vessel.

Capacity and Fuel Type

Choose a gas tank that matches your boat's fuel requirements while considering future needs. Common fuel types include gasoline and diesel. The tank's capacity should balance with your vessel's size and intended use, ensuring you have sufficient fuel for longer trips while preventing unnecessary weight on shorter excursions.

Material and Construction

Most boat fuel tanks are made from either aluminum, stainless steel, or composite materials. Aluminum tanks are lightweight and corrosion-resistant but may dent easily. Stainless steel offers superior durability and corrosion resistance, making it ideal for marine environments. Composite tanks combine weight efficiency with impact resistance, making them a popular choice for recreational boats.

Installation and Compatibility

The tank's installation requirements should align with your boat's layout and existing systems. Consider factors like access points for filling and maintenance, venting options, and compatibility with your boat's structure. Proper installation is crucial for preventing leaks and ensuring safe fuel storage.

Regulations and Safety Features

Adhere to local regulations regarding fuel tank storage and venting. Safety features like overfill protection, thermal insulation, and fuel-line connections are essential for preventing spills and maintaining fuel quality. Regular inspection and maintenance of the tank and its components help ensure reliable performance and safety during your boat trips.

FAQ

What are the key considerations when selecting a gas tank for a boat?

When choosing a gas tank for your boat, consider several key factors: capacity, material (steel or HDPE), mounting options, venting requirements, and fuel type compatibility. Make sure the tank's total volume matches your boat's storage space and your intended fuel usage.

The tank's material affects strength and corrosion resistance. Steel tanks are robust but prone to rust, while HDPE tanks offer superior durability and resistance to chemicals. Ensure the mounting location can support the tank's weight and has appropriate drain points to prevent water accumulation.

How do I determine the right gas tank capacity for my boat?

The capacity depends on your boat's size, fuel requirements, and intended use. For offshore fishing or deep-sea exploration, plan for at least 1 gallon per hour of operation. For coastal boating or day trips, 10-15% extra capacity is advisable to account for unexpected delays or fuel consumption spikes.

Consult your boat's manual for manufacturer recommendations. Most smaller recreational boats need 10-20 gallons, mid-sized vessels require 20-40 gallons, while larger boats should have 40-60 gallons plus reserves.

What are the main safety features to look for in a gas tank?

Key safety features include double-wall construction, fuel cap security, and overflow prevention. The tank should be built with an inner and outer wall to contain leaks, feature a secure fuel cap to prevent vapor escape, and have an overflow mechanism to prevent spillage during filling.

Other important safety considerations are impact resistance, grounding provisions, and compatibility with onboard electronics. Ensure the tank meets relevant maritime safety standards for your region and is properly grounded to prevent electrical sparks.

How do I properly maintain a gas tank on my boat?

Regular maintenance includes monthly inspections for leaks, cracks, and corrosion. Check the tank's mounting bolts and fuel lines for tightness and damage. Flush the tank with fresh fuel every 6 months to prevent sediment buildup and regular visual inspection of the drain fittings for water accumulation.

Every 2-3 years, perform a complete system check and consider replacing the fuel filter to maintain optimal performance. Check the vent system for blockages and ensure the tank has been properly primed before initial use.

What are the legal requirements for gas tanks on boats?

Boat-specific regulations vary by region, but typically mandate double-walled tanks, proper venting, and secure mounting. Always check your local maritime authority's guidelines and ensure your tank meets all requirements for your boat's classification and usage.

Additional requirements may include fuel quantity indicators, spill prevention mechanisms, and proper grounding. Keep documentation of your tank's certification and installation details for safekeeping and potential inspection.

How do I install a gas tank on my boat?

Professional installation is recommended for complex systems or certified gas tanks. The process includes mounting the tank securely, routing fuel lines, and connecting the electrical components. Local regulations may require permit applications and inspection.

Ensure proper clearance from heat sources, maintain correct fuel line angles, and follow manufacturer's instructions for venting and grounding. Regular testing of all components before and after installation is essential for proper function.

As an Amazon Associate, I earn from qualified purchases!