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Updated: 06 Apr 2026

10 Best Boat Gas Tanks 3-gallon

#1 Best Pick
EPA-Compliant 3 Gallon Marine Tank – Leak-Resistant Portable Storage for Boating, Outboard Motors & Outdoor Power Equipment

EPA-Compliant 3 Gallon Marine Tank – Leak-Resistant Portable Storage for Boating, Outboard Motors & Outdoor Power Equipment

Brand: EchoVincio
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  • EPA CERTIFICATION AND SAFETY DESIGN - Strictly complies with the standards of the US Environmental Protection Agency (EPA) and ASTM F3326-21 specifications, with a built-in flame mitigation device to eliminate the risk of fuel evaporation and ensure safety throughout transportation and storage.
  • CORROSION-RESISTANT AND ANTI-PERMEABILITY STRUCTURE - Made of marine-grade high-density polyethylene, impact-resistant and UV-resistant, it has passed the anti-permeability test, effectively avoids leakage, and extends the service life by 3 times.
  • PORTABLE 3 GALLON CAPACITY - Lightweight design (only 5.9 pounds), integrated non-slip handle and reinforced handle, suitable for ships, generators, camping equipment, and meet outdoor rapid supply needs.
  • EFFICIENT OIL FILLING AND CLEANING MAINTENANCE - Wide-caliber oil filling design with dustproof sealing cover supports fast filling; removable internal structure, easy to clean and no residue.
  • MULTI-SCENARIO COMPATIBLE REPLACEMENT SOLUTION - Designed for upgrading old fuel tanks, compatible with outboard motors, fishing boats, RVs and other equipment, providing 12L/3 gallon precise capacity matching
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#2 Best Value
AloneGoer 3 Gallon Portable Boat Fuel Gas tank 12L 3 Gallon Marine Outboard Gas Tank EPA Compliant for YAMAHA Outborad MotorBoat with Connector Replace 6YL-24201-24-00 Portable Gas Tank

AloneGoer 3 Gallon Portable Boat Fuel Gas tank 12L 3 Gallon Marine Outboard Gas Tank EPA Compliant for YAMAHA Outborad MotorBoat with Connector Replace 6YL-24201-24-00 Portable Gas Tank

Brand: AloneGoer
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  • 12L 3 Gallon Gas Fule Tank Suitable for Motor fuera de borda with Marine fule line connector hose
  • Made of UV resistant stable plastic (polyethylene),Light weight,easy to carry,safe and durable
  • Capacity: 3 gallons;Most people would say it's a 12 liter gas tank, but it's only suitable for 11.3 liters.
  • Screw cap with a vent,can adjust the air pressure balance
  • Standard nozzle: used for the interface of outboard engine (more than 6 HP) from the rear hole.Please check the machine model number and part number before purchase to ensure that the purchased parts are suitable for your equipment.
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#3 Budget Pick
Boat Tank - Petrol Tank Boat | Fuel Tank | Fuel Tank | Boat Tank | Sea Container | Portable Tank for Ship | Outboard Engine Boat Raw Tin | 3 Gallon Kayak | Oil Transport Container for Ship

Boat Tank - Petrol Tank Boat | Fuel Tank | Fuel Tank | Boat Tank | Sea Container | Portable Tank for Ship | Outboard Engine Boat Raw Tin | 3 Gallon Kayak | Oil Transport Container for Ship

Brand: Generic
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  • STAY IN CONTROL Detection of oil volumes at any time with the built-in clear oil volume indicator accurate to ensure you stay prepared, and avoid unexpected oil shortages
  • Filter function: with a marine oil tank air inlet filter, our innovative filter design are effectively eliminated impurities to ensure the oil sucks for longer engine duration
  • COMFORTABLE HANDLING With its ergonomic handle and design, this boat tank greatly facilitates the transportation load and simplifies the portability of the oil tank
  • Improved lid performance: the oil tank deck equipped with a golden nut
  • Robum construction: made of excellent PP material, this reliable boat tank ensures longevity and resists deformation, ideal for extended durability
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#4 Top Choice
3 Gallon Marine Portable Tank Outboard Boat Transfer Tank with Line l-Shaped Handle Easy to Carry

3 Gallon Marine Portable Tank Outboard Boat Transfer Tank with Line l-Shaped Handle Easy to Carry

Brand: ExploreHorizon
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  • Premium Construction:Featuring rugged construction from top-grade materials, our 12-liter tank withstands the rigors of marine use, fighting off aging and impacts to offer a durable and dependable refueling solution.
  • Ergonomic Transport Handle:Designed with a comfortable I-shaped handle that fits naturally in your hand, this fuel tank makes transportation effortless around docks and decks. The balanced weight distribution allows for secure carrying during refueling operations, enhancing convenience wherever your journey takes you.
  • Never speculate about fuel levels again with the clear visual indicator. Combined with a built-in air filter that blocks contaminants, it ensures your engine runs smoothly and efficiently for peak performance on the water.
  • Dual Sealing and Venting Modes: Switch seamlessly between sealed and vented operation using the golden adjustment nut. This innovative system maintains proper tank pressure during use while preventing spills during transport, giving you complete control over safety.
  • Fuel Pipe and Pump: Features a pump and flexible fuel line for straightforward tank refilling,providing immediate convenience for all your marine refueling requirements.
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#5 Popular Choice
Scepter 10506 Under Seat Portable Fuel Tank - 3 Gallon, Red

Scepter 10506 Under Seat Portable Fuel Tank - 3 Gallon, Red

Brand: Scepter
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  • Seamless one-piece polyethylene construction
  • Low profile design fits in tight spaces
  • Combination fuel pick-up/sight gauge
  • Molded feet provide superior ventilation
  • Accepts standard 1/4 NPT marine tank fittings
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#6 Top Pick
BISupply Boat Gas Tank Kit 3 Gallon - Portable Plastic Outboard Marine Boat Fuel Tank with Fill Hose

BISupply Boat Gas Tank Kit 3 Gallon - Portable Plastic Outboard Marine Boat Fuel Tank with Fill Hose

Brand: BISupply
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  • [Fuel Up for Fun]: Fill up your pontoon boat gas tank with ease with the BISupply Portable Marine Fuel Tank for Small Engines
  • [Easy to Fill]: Outboard fuel tank intake spout is outfitted with a fine mesh to keep solids out of your fuel; Small boat gas tank indicator shows fuel levels full, half full, and empty
  • [For Small Engines]: 3 gallon (11.4 liter) capacity for easy transport with carry handle; Intended for marine use but can alternatively be used with any small engine such as a generator or golf cart
  • [Fill Your Tank]: Portable Jon boat gas tank comes with a 10ft (3m) rubber boat motor gas tank hose that features a priming bulb to start the flow
  • [Long Lasting Durability]: HDPE plastic gas tank for boat motor seals tightly to prevent leaking of gasoline fuel or fumes
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#7 Top Pick
Attwood 8803LPG2S EPA and CARB Certified Portable Boat Gas Tank with Gauge, 3 Gallon Capacity

Attwood 8803LPG2S EPA and CARB Certified Portable Boat Gas Tank with Gauge, 3 Gallon Capacity

Brand: attwood
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  • Automotive-grade, multi-layer construction withstands the pressure build-up associated with closed fuel systems
  • Cap with built-in vacuum valve means no need for manual venting
  • Meets EPA and CARB (California Air Resources Board) regulations
  • Complies with all ABYC/NMMA requirements for portable marine fuel tanks
  • Attwood products are both compatible and reliable, engineered and built with a never-fail attitude
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#8 Top Pick
DEF Portable Boat Fuel Tank 12L 3 Gallon Marine Portable Fueling Tank Replacement for Marine Outboard Motor Fuel Tank

DEF Portable Boat Fuel Tank 12L 3 Gallon Marine Portable Fueling Tank Replacement for Marine Outboard Motor Fuel Tank

Brand: DEF
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  • The 3-gallon marine fuel tank is made of high-density polyethylene, which is anti-aging, impact-resistant and corrosion-resistant. It can bounce back naturally after an impact without permanent deformation.
  • 12 Litre (3 Gallon) capacity most people call this a 12lt tank but its only 11.3LT Screw-on cap with breather vent.Standard nozzle: outboard motor(above 6HP)interface from the back holes.
  • Two Modes of Sealing and Venting-There are two designs of fuel tank cap, which can be sealed or vented, and the metal nut can be vented and safe to use(High-quality spring designed for deflation, Unscrew the yellow metal nut to release the air in the fuel tank. Tighten the yellow metal nut and the oil tank is airtight), which helps to form a smooth fuel flow, thereby minimizing leakage.
  • Equipped with I-shaped handle, more ergonomic, easy to carry and store, rust-proof, durable, beautiful, easy-to-use handle design, light and portable, easy to place and carry.Fit for Small to Large Boats, Inflatables, Tinnies, Canoes and Kayaks.
  • Package includes: 1* fuel tank , 1* boat fuel line hose, 2* of ends fuel connectors fittings(As shown in the picture)
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#9 Top Pick
attwood 8803LPG2 EPA and CARB Certified Portable Boat Gas Tank with Gauge, 3 Gallon Capacity

attwood 8803LPG2 EPA and CARB Certified Portable Boat Gas Tank with Gauge, 3 Gallon Capacity

Brand: attwood
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  • Automotive-grade, multi-layer construction withstands the pressure build-up associated with closed fuel systems
  • Cap with built-in vacuum valve means no need for manual venting
  • Meets EPA and CARB (California Air Resources Board) regulations
  • Complies with all ABYC/NMMA requirements for portable marine fuel tanks
  • Attwood products are both compatible and reliable, engineered and built with a never-fail attitude
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#10 Top Pick
VEVOR Boat Fuel Tank, 3.17-Gallon/12-L Marine Outboard Transfer Tank, Transfer Tank with 9.8ft Hose, Gauge for Outboard Engine, Yacht, Fishing Boat, Deck, Red

VEVOR Boat Fuel Tank, 3.17-Gallon/12-L Marine Outboard Transfer Tank, Transfer Tank with 9.8ft Hose, Gauge for Outboard Engine, Yacht, Fishing Boat, Deck, Red

Brand: VEVOR
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  • No More Leaks: Our marine fuel tank cap is a game-changer! It's got two nifty designs: sealed or vented. By loosening the yellow metal nut, the air inside the tank can be released. Tightening it seals the tank, facilitating smooth fuel flow and minimizing gas vapor leakage.
  • Strong Compatibility: The boat gas tank comes with a 9.8 ft/3 m long fuel hose with a 0.24"/6 mm inner diameter, compatible with Yamaha connectors. It's the perfect match for your outboard motor adventures, whether you're on a fishing boat, or chilling on a deck boat.
  • Built Tough: With a hefty 3.17 gal/12L capacity, our boat fuel tank is made of high-density polyethylene, resistant to aging, impact, and corrosion. It maintains its shape even after prolonged use, ensuring security and long service life. (Note: Avoid prolonged exposure to direct sunlight to prevent product aging and the risk of expansion.)
  • Easy Transport and Storage: Our portable outboard fuel tank, complete with the molded top handle, is your ticket to hassle-free transportation. From the dock to your fishing vessel or small boat, it's a breeze. Plus, its compact design fits snugly under boat seats, saving you precious space.
  • Visual Fuel Level: Keep your eyes on the changes inside the marine gas tank with our handy fuel gauge. The separate inlet and outlet prevent fuel spillage, keeping gasoline away from dirt and debris. It's recommended that the tank be filled to 80% of its capacity to reduce gasoline evaporation and security risks during use.
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