Choosing the right outboard motor fuel tank can improve range, simplify refueling, and reduce clutter on deck.
Below, we focus on practical options for different boat sizes, fuel needs, and portability priorities.
Best 10 Outboard Motor Fuel Tank Picks for 2026
Low-Profile 12-Gallon Capacity
Scepter 12 Gallon Rectangular Marine Tank
- 12-gallon capacity for longer run time
- Low-profile shape saves storage space
- Built-in gauge and molded hand holds
Best For: Boaters needing a larger portable tank that still stows easily
Compact 6-Gallon Standard
Attwood EPA/CARB 6-Gallon Tank
- EPA and CARB certified
- Built-in vacuum valve for no manual venting
- Compact universal-fit 6-gallon design
Best For: Small boats and short trips where compliance and simplicity matter
High-Capacity With Hose
VEVOR 14.53-Gallon Marine Tank
- 14.53-gallon capacity with visible gauge
- Includes 9.8-foot fuel hose
- HDPE build resists impact and corrosion
Best For: Boaters who need a large tank with an included hose and gauge
6-Gallon With Gauge
Attwood 6-Gallon Tank with Gauge
- Built-in gauge for easy fuel checks
- Automatic vacuum valve for steady flow
- EPA, CARB, and ABYC compliant
Best For: Boaters wanting a compact tank with a built-in gauge
Compact Portable Fuel Tank
6.34-Gallon Marine Transfer Tank with Hose
- HDPE tank with impact and corrosion resistance
- Includes pre-assembled fuel line and primer bulb
- Clear fuel level indicator and carry handle
Best For: Small boats and portable refueling needs
High-Capacity Marine Tank
Scepter 12-Gallon Portable Boat Fuel Tank
- 12-gallon capacity for longer run time
- Built-in fuel gauge and pick-up
- 2-way vented cap with rugged HDPE shell
Best For: Boaters who want more fuel capacity and easy level checks
Ultra-Portable Marine Tank
PeakPursuit 3-Gallon Outboard Tank
- Compact 3-gallon tank for easy carrying
- Includes fuel pipe, pump, and level indicator
- I-shaped handle and dual sealing/venting cap
Best For: Short outings and backup fuel on small boats
Compact Large-Capacity Marine Tank
VEVOR 6.34-Gallon Portable Outboard Fuel Tank
- 6.34-gallon / 24L capacity
- Includes 9.8 ft fuel hose and gauge
- HDPE tank with molded carry handle
Best For: Boat owners who want a larger portable tank with easy level checks and flexible placement
Yamaha-Style Replacement Tank
3 Gallon Portable Marine Fuel Tank for Yamaha Outboards
- 3-gallon portable marine tank
- Multi-layer barrier helps reduce fuel evaporation
- UV-stabilized and salt-spray resistant
Best For: Boaters needing a compact Yamaha-compatible replacement tank
Compact Yamaha-Compatible Transfer Tank
VEVOR 3.17-Gallon Outboard Fuel Tank
- 3.17-gallon / 12L portable tank
- 9.8 ft hose fits Yamaha connectors
- Built-in gauge and under-seat-friendly design
Best For: Small-boat users who want a compact portable tank with Yamaha-compatible hookups
Low-Profile 12-Gallon Capacity – Scepter 12 Gallon Rectangular Marine Tank
If you want an outboard motor fuel tank that stretches runtime without taking up much deck space, this Scepter 12-gallon portable tank is built for that job. Its low-profile rectangular shape, molded hand holds, and built-in fuel gauge make it practical for boaters who need a larger-capacity tank that is still easy to move and stow.
Best For: Boaters who want a roomy, space-saving portable tank for outboard engines.
Pros:
- 12-gallon capacity helps extend time between fill-ups.
- Low-profile rectangular design is easier to store on board.
- Built-in fuel pick-up/sight gauge supports quick level checks.
- One-piece HDPE shell is rugged, crush-resistant, and corrosion resistant.
Cons:
- Fuel line is sold separately.
- Larger size may be more tank than casual day trips require.
- Designed for standard marine tank fittings, so setup depends on compatible parts.
This is a strong pick if capacity and portability matter equally. The vented cap, molded handles, and durable construction make it a sensible outboard motor fuel tank for regular marine use.
Compact 6-Gallon Standard – Attwood EPA/CARB 6-Gallon Tank
This Attwood outboard motor fuel tank is aimed at boaters who want a simple, compliant portable gas tank for smaller engines and shorter outings. The 6-gallon size keeps it manageable, while the built-in vacuum valve removes the need for manual venting and helps make routine use more straightforward.
Best For: Small-boat owners who want a compact, regulation-compliant portable marine fuel tank.
Pros:
- EPA and CARB certified for compliance-focused buyers.
- Built-in vacuum valve eliminates manual venting.
- Universal fit works with marine and non-marine small engines.
- Compact 6-gallon size is easy to handle and store.
Cons:
- Does not include a gauge.
- Smaller capacity means more frequent refueling than larger tanks.
- Best suited to simpler setups rather than long-range fuel needs.
For basic portability and compliance, this is an easy tank to live with. It keeps the design straightforward while covering the essentials most small-boat setups need from an outboard motor fuel tank.
High-Capacity With Hose – VEVOR 14.53-Gallon Marine Tank
If you need a higher-capacity outboard motor fuel tank with a ready-to-use hose, this VEVOR marine tank is built around convenience and visibility. It includes a 9.8-foot fuel hose, a visible fuel gauge, and a two-way vent cap, making it a practical portable option for fishing boats, yachts, and other outboard setups that match its connector requirements.
Best For: Outboard boat owners who want a large portable tank with an included hose and fuel gauge.
Pros:
- Large 14.53-gallon/55L capacity supports longer outings.
- Includes a 9.8-foot fuel hose for added reach.
- Visible gauge makes fuel level monitoring easier.
- HDPE construction is resistant to impact, aging, and corrosion.
Cons:
- Hose is compatible with Yamaha connectors only.
- Tank should be filled to 80% capacity, which reduces usable fill volume.
- Needs protection from prolonged direct sunlight to avoid aging and expansion issues.
This tank is a good fit when capacity and hose length matter more than universal compatibility. If your connector setup matches, it delivers a straightforward portable fuel solution for an outboard motor fuel tank setup.
6-Gallon With Gauge – Attwood 6-Gallon Tank with Gauge
attwood 8806LPG2 EPA and CARB Certified 6-Gallon Portable Marine Boat Fuel Tank with Gauge
Check Price On AmazonThis Attwood outboard motor fuel tank keeps things simple but adds a built-in gauge, which is helpful when you want to track fuel without guessing. The 6-gallon size makes it a compact portable option, and the multi-layer construction plus automatic vacuum valve are aimed at steady performance in closed marine fuel systems.
Best For: Boat owners who want a compact 6-gallon portable tank with a gauge and compliant construction.
Pros:
- Built-in gauge makes fuel level checks easier.
- Automatic vacuum valve supports consistent fuel flow.
- Multi-layer construction is designed for pressure and harsh conditions.
- Meets EPA, CARB, and ABYC standards.
Cons:
- 6-gallon capacity is best for shorter runs.
- Still relies on standard 1/4″ NPT fittings for setup.
- Not as space-efficient for high-capacity needs as larger tanks.
For a small portable tank, this model adds useful visibility and compliance-minded construction. It is a solid choice if you want a straightforward outboard motor fuel tank with a gauge already included.
Compact Portable Fuel Tank – 6.34-Gallon Marine Transfer Tank with Hose
If you need an outboard motor fuel tank that is easy to carry and ready to use, this 6.34-gallon marine transfer tank is built for straightforward refueling. It uses HDPE construction for impact and corrosion resistance, and it includes a pre-assembled fuel line with a manual primer bulb for quick setup.
Best For: Small boats, dinghies, fishing boats, and auxiliary outboard setups that benefit from a compact, portable tank.
Pros:
- Durable HDPE body with anti-aging, impact-resistant, and corrosion-resistant properties
- Includes a pre-assembled fuel line and manual primer bulb for easier priming
- Clear fuel level indicator helps you monitor fuel at a glance
- Ergonomic carry handle and compact size make transport and storage easier
Cons:
- Should not be exposed to direct sunlight for long periods
- Hose connector flange screws should be checked and tightened before use
This tank is a practical pick if you want a portable marine fuel solution with the basics already included. Its smaller size and built-in level visibility make it especially useful for short trips or backup fueling.
High-Capacity Marine Tank – Scepter 12-Gallon Portable Boat Fuel Tank
This outboard motor fuel tank is built for boaters who want longer run time without giving up portability. The 12-gallon Scepter tank combines a rugged 5-layer HDPE shell with a built-in fuel gauge and a 2-way vented cap designed to manage airflow and pressure.
Best For: Outboard boat owners who want a large-capacity portable tank with built-in gauge visibility and vented cap convenience.
Pros:
- Large 12-gallon capacity supports longer outings
- Built-in fuel gauge and pick-up make level checks simple
- 2-way vented cap helps manage airflow and pressure buildup
- Rugged one-piece, 5-layer HDPE shell resists rust, corrosion, UV damage, and crushing
Cons:
- Fuel line is sold separately
- Tall profile may take more space than smaller tanks
If capacity matters most, this tank stands out as a dependable marine fuel option with useful built-in features. It is a strong fit for boaters who want fewer refills and a durable container for harsh marine conditions.
Ultra-Portable Marine Tank – PeakPursuit 3-Gallon Outboard Tank
For quick trips and lightweight handling, this outboard motor fuel tank keeps things simple with a 3-gallon design and included fuel pipe and pump. It is made with premium materials for durability, and the I-shaped handle makes it easier to move and refuel on the water.
Best For: Boaters who want a small, easy-to-carry portable tank for short outings or backup fuel.
Pros:
- Compact 3-gallon size is easy to carry and store
- Ergonomic I-shaped handle improves portability
- Fuel level indicator and integrated filter add convenience
- Dual sealing and venting cap offers flexible operation
Cons:
- Smaller capacity means more frequent refills
- 30-day manufacturer warranty is shorter than some alternatives
This is a good choice if portability is your top priority and you do not need a large tank. Its included pump, visible fuel level, and compact footprint make it well suited to smaller boats and short-run use.
Compact Large-Capacity Marine Tank – VEVOR 6.34-Gallon Portable Outboard Fuel Tank
If you need an outboard motor fuel tank with a larger reserve, this 6.34-gallon VEVOR marine tank is built for longer runs and easier day-to-day handling. It includes a 9.8 ft hose, a visible level gauge, and a compact shape that can fit under boat seats.
Best For: Boaters who want a high-capacity portable tank with a long hose and easy storage.
Pros:
- 6.34-gallon / 24L capacity suits longer outings.
- Built-in gauge makes fuel level checks simple.
- 9.8 ft hose adds flexibility for setup and placement.
- HDPE construction is resistant to impact, corrosion, and aging.
Cons:
- Recommended fill level is 80%, so usable fuel is less than full capacity.
- Should not be exposed to direct sunlight for long periods.
- Large capacity may be more tank than casual day trips require.
Overall, this is a practical outboard motor fuel tank for boaters who value capacity, hose reach, and easy visibility. Its portable handle and under-seat-friendly shape make it especially convenient for small boats and fishing setups.
Yamaha-Style Replacement Tank – 3 Gallon Portable Marine Fuel Tank for Yamaha Outboards
This 3-gallon outboard motor fuel tank is aimed at smaller boats and Yamaha-compatible setups where a compact spare tank makes sense. It uses multi-layer barrier construction, has UV stabilization, and includes a vented screw cap for pressure balance.
Best For: Owners looking for a compact, Yamaha-style replacement tank for small boats or spare fuel storage.
Pros:
- Vehicle-specific fit for Yamaha-style portable tank replacement.
- HDPE-EVOH-HDPE construction helps reduce fuel permeation.
- UV-stabilized and salt-spray resistant for marine environments.
- Vented screw cap helps balance internal air pressure.
Cons:
- 3-gallon capacity is relatively small.
- Listed as suitable for outboard engines more than 6 HP from the rear hole.
- Primarily a replacement-style tank rather than a universal fit option.
This is a sensible pick if you want a compact outboard fuel solution with better fuel-retention features than basic plastic tanks. Its EPA-compliant design and corrosion resistance make it a strong fit for marine use, especially in saltier conditions.
Compact Yamaha-Compatible Transfer Tank – VEVOR 3.17-Gallon Outboard Fuel Tank
If you want a smaller outboard motor fuel tank that is easy to carry and store, this 3.17-gallon VEVOR transfer tank is a practical option. It comes with a 9.8 ft hose, a built-in gauge, and a compact body that can tuck under boat seats.
Best For: Boaters who want a compact portable tank with Yamaha-compatible hose setup.
Pros:
- 3.17-gallon / 12L size is compact and easy to manage.
- 9.8 ft hose with 6 mm inner diameter supports Yamaha connectors.
- Built-in gauge helps monitor fuel levels at a glance.
- HDPE construction is designed for aging, impact, and corrosion resistance.
Cons:
- Smaller capacity may not suit longer trips.
- Recommended fill level is 80%, which reduces usable volume.
- Should be kept out of prolonged direct sunlight.
This tank makes sense for anglers, small-boat owners, and anyone who wants a simple portable fuel setup without extra bulk. The combination of hose length, gauge, and compact storage-friendly design is its main advantage.
How We Picked the Best Outboard Motor Fuel Tank
We looked for Outboard Motor Fuel Tank options that balance capacity, portability, compatibility, and safety certifications. Priority went to tanks with EPA/CARB compliance, durable polyethylene construction, secure caps, clear fuel visibility or gauges, and hose setups that make connection straightforward.
We also considered real-world use: how easy the tank is to carry, how much space it takes on board, and whether the size matches typical run times for small fishing boats, tenders, and larger day boats.
Quick Comparison
Smaller 3-gallon tanks are best when weight and compact storage matter most. Mid-size 6-gallon tanks are a versatile fit for many outboard setups and short-to-moderate outings. Larger 12- to 14.5-gallon tanks make more sense for boats that need longer range, fewer refills, or a more permanent portable fuel solution.
Key Buying Factors for an Outboard Motor Fuel Tank
Capacity and Range
Match the tank size to your engine’s burn rate and trip length. A higher-capacity Outboard Motor Fuel Tank can extend time on the water, but it also adds weight when full.
Portability and Storage
Check tank dimensions, handle design, and low-profile shapes if your boat has limited locker or deck space. A tank that fits well is easier to secure and safer underway.
Venting and Fuel Delivery
Two-way vent caps help manage pressure and fuel flow. Hose length, connector style, and whether the tank includes a primer bulb or gauge can affect day-to-day convenience.
Compliance and Build Quality
Look for EPA and CARB certification where relevant, plus rugged, UV-resistant materials. A good marine fuel tank should resist leaks, odors, and cracking over time.
Visibility and Monitoring
Built-in gauges or visible tank bodies make it easier to track fuel levels and avoid running low unexpectedly.
Who Should Buy Which Outboard Motor Fuel Tank?
If you have a small boat, kayak, or tender and only need short trips, a 3-gallon tank is usually the easiest to carry and stow. For most recreational outboard users, a 6-gallon tank offers the best balance of size and convenience. If you fish longer days or run farther from the dock, a 12-gallon or larger tank is the smarter pick.
In short, choose the smallest Outboard Motor Fuel Tank that still gives you the range you need. That keeps weight manageable while still supporting reliable time on the water.