Answering your search for a reliable fuel tank for outboard motors, this guide highlights five top options that balance durability, portability, and compatibility. Ideal buyers include casual boaters needing spare fuel, anglers with smaller craft, and hull owners seeking easy transport and secure sealing. Below, each pick is evaluated for who it’s best for, along with practical cautions and benefits. A quick comparison table follows to help you compare capacity, hose length, and key features at a glance.
| Product | Capacity | Best For | Key Benefit |
|---|---|---|---|
| AloneGoer 3 Gallon Portable Boat Fuel Tank | 3 gal / 12 L | Yamaha outboards and small boats | Multi-layer barrier technology reduces fuel evaporation |
| VEVOR Boat Fuel Tank, 3.17-Gallon | 3.17 gal / 12 L | Compact, portable fueling | Long hose, easy transport with molded handle |
| Scepter 12 Gallon Portable Marine Gas Can | 12 gal / 45 L | Extended trips, larger engines | Built-in gauge and 2-way vented cap |
| LIZHOUMIL Portable Boat Fuel Gas Tank | 3 gal / 12 L | Budget-friendly, easy carrying | Clear gauge window and built-in filter |
| VEVOR Marine Tank, 6.34-Gallon | 6.34 gal / 24 L | Bigger boats, longer runs | Separate inlet/outlet and durable HDPE |
AloneGoer 3 Gallon Portable Boat Fuel Tank

Best for Yamaha outboards and compact boats, this 12L tank uses a multi-layer barrier to minimize fuel permeation. It is designed for on-board use as a spare or primary fuel source in small vessels. Its UV-stabilized, corrosion-resistant construction withstands salt spray and high humidity, making it a solid choice for seaworthy plans.
Who it’s for: buyers with Yamaha-compatible outboards or inflatable motorboats seeking a compact, durable tank with low evaporation. Why selected: the advanced barrier tech and durable materials provide reduced fuel loss and longer life in marine conditions.
Caution: Prolonged exposure to direct sunlight can accelerate aging of plastics; store out of direct sun when not in use. Ensure the hose and connectors are compatible with your Yamaha 6YL-24201-24-00 setup.
VEVOR Boat Fuel Tank, 3.17-Gallon

Best for portable fueling on smaller boats or decks, this tank offers a 9.8 ft hose and a robust HDPE build that resists aging and corrosion. Its molded handle facilitates transport, and its compact size fits cabin or under-seat storage. Avoid prolonged direct sun exposure to prevent aging and expansion risks.
Who it’s for: boaters needing an easy-to-move, lightweight option for short trips or dockside refueling. Why selected: strong hose length and durable construction suit frequent, mobile fueling needs.
Scepter 12 Gallon Portable Marine Gas Can

The 12-gallon capacity is ideal for longer boating sessions or larger outboards. It includes a built-in fuel gauge and a 2-way vented cap to manage vapor pressure during refueling. This can is compatible with diesel and ethanol-blended fuels, and its under-seat design helps save space.
Who it’s for: boat owners needing extended range or less frequent refueling. Why selected: the integrated gauge and vented cap provide practical maintenance and safety benefits during fueling.
Caution: heavier tanks require careful handling and secure mounting; ensure store area supports added weight and that the vented cap is correctly closed when not fueling.
Portable Boat Tank 3 Gal, LIZHOUMIL

Best for entry-level boaters looking for a straightforward 3-gallon option, this tank emphasizes visibility with a clear gauge window and includes a built-in filter for fuel cleanliness. Its ergonomic handle and robust HDPE construction support reliable refueling on the go.
Who it’s for: new boaters or budget-conscious buyers who still want a trustworthy, simple-to-use tank. Why selected: value-focused build with practical gauge and filtration features.
Caution: verify compatibility with your engine’s fuel line if the standard fittings differ, and avoid storing near heat sources to prevent material deformation.
VEVOR Marine Tank, 6.34-Gallon

Best for boats needing a larger fuel reserve, this 6.34-gallon tank provides a balance of capacity and manageability. It features a separate inlet and outlet to minimize spills, and a gauge to monitor fuel levels. Surface protection notes advise against long sun exposure to preserve integrity.
Who it’s for: mid-sized boats or users planning longer runs. Why selected: larger capacity without stepping up to a tall tank, making it versatile for various vessels.
Caution: ensure proper mounting and ventilation to avoid heat buildup and potential expansion of contents under bright sun.
EliteEdge 6L Portable Boat Tank

Best for compact boats and easy handling, this 6L tank uses an I-shaped ergonomic handle and a universal 9.8 ft hose. It emphasizes impact resistance and durability, making it a suitable option for frequent use on deck or near salt spray.
Who it’s for: skippers needing a compact, rugged option with a long hose. Why selected: strong build and user-friendly design for quick fueling in tight spaces.
Caution: consider the rate of evaporation in hot climates; keep the tank out of direct sunlight when not in use.
Scepter 6 Gallon Portable Marine Gas Can

Best for smaller boats needing a balance of capacity and storage flexibility, this can features a two-way vented cap and built-in gauge for quick fuel checks. It remains compatible with diesel and ethanol-blended fuels and includes molded feet for stability.
Who it’s for: boaters prioritizing under-seat storage with straightforward fuel monitoring. Why selected: compact size with practical gauge and vent features for daily use.
Caution: under-seat storage should account for added height and weight when full, especially on rough water days.
Buying Guide: Practical Considerations For Your Outboard Fuel Tank
- Capacity vs. boat size: Match tank capacity to engine fuel requirements and planned trip length. Larger tanks offer longer runs but add weight and space considerations.
- Material and barrier technology: Look for HDPE or multi-layer barriers to minimize evaporation and degradation in salt air and sun exposure.
- Fittings and hose length: Ensure connectors fit your engine brand and consider hose length for easy reach from fueling point to tank or motor.
- Ventilation and safety: Vented caps help prevent dangerous vapor buildup; keep fuel away from heat sources and open flames.
- Gauge visibility: Built-in sight gauges simplify monitoring fuel levels without removing caps or guesswork.
- Storage and transport: Favor tanks with ergonomic handles and compact designs for deck storage and portability.
- Compatibility notes: Some tanks specify compatibility with Yamaha connectors or standard marine fittings; verify before purchase.
Frequently Asked Questions
- What size fuel tank is best for a small outboard motor? A 3 to 6 gallon tank works well for many small boats, offering portability without excessive weight.
- Can I use a marine fuel can for diesel? Some are designed to handle diesel blends; check the product features to confirm compatibility.
- Why do some tanks have built-in gauges? Built-in gauges provide quick, on-the-spot fuel level checks, reducing the need for separate gauges or measuring.
- Is venting important for marine fuel tanks? Yes, vented caps help regulate pressure and reduce vapor buildup during fueling and use.
- Can I store fuel tanks in the cabin or under seats? Yes, many portable tanks are designed for under-seat storage, but ensure proper ventilation and stability.
- What maintenance is needed for marine fuel tanks? Regularly inspect hoses and fittings for wear, clean the gauge windows, and keep tanks away from prolonged sun exposure to extend life.