If you’re upgrading or stocking a pontoon boat with reliable fuel capacity, these five fuel tanks stand out for marine use, size, and venting features. They’re best suited for pontoon owners needing larger capacity, easy refueling, and visible fuel gauges. Below you’ll find a quick comparison and detailed sections to help you choose.
| Product | Capacity | Best For | Key Benefit |
|---|---|---|---|
| Scepter 12 Gallon Portable Boat Gas Can (08668) | 12 gallons | Long days on the water, easy transport | Built-in fuel gauge and 2-way vented cap |
| VEVOR Marine Tank (14.53 Gal / 55L) | 14.53 gallons | Extended trips, high visibility gauge | Two-way vent cap, long hose included |
| Moeller Marine 031626 Topside Tank (22 Gallon) | 22 gallons | Topside mounting, larger capacity | UV-stable, rotomolded construction |
| Scepter 08669 Rectangular 12 Gallon Low Profile | 12 gallons | Low-profile storage, under-seat fit | Vented cap, built-in gauge |
| Sierra 031624 24 Gal Topside Tank | 24 gallons | Max capacity, topside installation | Topside tank design, bright red finish |
Note: Choose tanks with compatible fittings and venting for your outboard or stern drive. Always verify mounting space, hose length, and approved fuel types for your boat model.
Scepter 12 Gallon Portable Boat Gas Can
The Scepter 12-gallon tank provides ample capacity with a compact profile, ideal for pontoon boats seeking longer running time without sacrificing space. It features a 2-way vented cap that allows air flow during refueling and automatically releases pressure above 5 PSI to reduce vapor buildup. A built-in fuel gauge aids quick level checks, and the container is EPA/CARB-compliant for marine use. The fuel line attaches to the side, and standard 1/4 NPT marine fittings are compatible.
Best for: Boat owners needing reliable capacity and quick visibility of fuel levels. Better for on-deck storage and transport on smaller to mid-sized pontoons. Caution: Ensure compatible fittings and that the vented cap remains secure during transport.
VEVOR Marine Tank 14.53 Gal
VEVOR’s 14.53-gallon tank delivers high capacity with a durable high-density polyethylene body. It includes a long 9.8 ft/3 m hose and a 0.3-inch inner diameter compatible with Yamaha connectors, making it a solid match for several outboard setups. The tank includes a visible gauge for fuel level checks and a two-way vent cap to manage pressure and vapor buildup. Note: avoid prolonged direct sunlight to minimize aging.
Best for: Pontoon owners who want a larger under-sink-style tank with a long hose for flexible routing. Choose this if you value a clear fuel gauge and a robust HDPE build. Caution: Visual gauge usage assumes regular inspection for accurate readings.
Moeller Marine Topside Tank 22 Gallon
The Moeller 22-gallon topside tank is designed for mounting on the deck, offering substantial capacity for longer adventures on pontoons with accessible top-side mounting. It uses rotomolded, cross-linked poly construction with UV stabilization to resist aging in sun exposure. This model suits boats built for exterior mounting and a tidy deck footprint. Best for: Pontoon setups that require a larger deck-tank solution and durable, UV-stable materials. Caution: Topside mounting requires proper hardware and space alignment.
Scepter 12 Gallon Low Profile Tank (Rectangular)
This rectangular, low-profile Scepter tank matches boats needing a slim, under-seat friendly option without sacrificing fuel capacity. It includes a 2-way vented cap and a built-in fuel gauge for quick checks. The unit is compatible with diesel and ethanol-blended fuels, and the fuel line attaches on the side. Best for: Pontoon boats with limited under-seat height or tight deck spaces. Caution: Ensure adequate clearance around the tank when mounted to prevent flex or vibration.
Sierra 24 Gal Topside Tank
The Sierra 24-gallon topside tank offers a high-capacity solution for pontoon boats with accessible deck space. The top-side design facilitates easy mounting and refueling access from above deck. The red tank finish helps with visibility on the water. Best for: Pontoon owners who prioritize maximum capacity and straightforward topside installation. Caution: Larger tanks require sturdy mounting and appropriate securing hardware to prevent movement at sea.
Buying Guide: Key Purchase Considerations
What capacity do you need? Assess typical trip length and engine fuel consumption to determine an appropriate tank size. Consider whether you’ll mount topside or below deck, and ensure space for hoses and fittings.
How important is a built-in gauge? Tanks with built-in fuel gauges simplify monitoring and reduce on-water guessing. If a gauge isn’t built-in, be prepared to install an external sender or sight tube.
Ventilation and safety: Two-way vent caps help manage pressure and minimize vapor buildup during refueling. Ensure compatibility with your fuel type (gasoline, diesel, ethanol-blended fuels) and local EPA/CARB requirements.
Hose length and fittings: Check hose length (often 6–10 feet or more) and confirm the fittings (1/4 NPT is common). Verify compatibility with your outboard or stern drive connections to avoid leaks.
Durability and mounting: For pontoon decks, choose UV-stable, impact-resistant plastics for outdoors exposure. Topside tanks require secure mounting with appropriate hardware to prevent movement.
Maintenance and aging: Prolonged sun exposure can age tanks; store away from direct sunlight when possible and inspect seals, gaskets, and vents regularly.
Frequently Asked Questions
- What size fuel tank is best for a pontoon boat? The best size depends on your typical trips, engine size, and deck space. Tanks from 12 to 24 gallons cover many common pontoon setups, balancing capacity and deck fit.
- Are built-in fuel gauges reliable on marine tanks? Built-in gauges provide quick visibility of fuel levels, but accuracy depends on tank design and gauge quality. Periodic cross-checks with a dipstick can help verify readings.
- Can I use diesel in a gasoline tank? Some marine tanks are designed for diesel and ethanol-blended fuels. Confirm fuel compatibility with the product specification to prevent damage or safety issues.
- Do I need a vented cap on my marine tank? Yes. A vented cap helps prevent dangerous vapor buildup during refueling and reduces pressure changes inside the tank.
- What maintenance is required for topside tanks? Regularly inspect seals, fittings, and hoses for leaks, clean the exterior, and avoid prolonged exposure to direct sun to extend tank life.
- Can I install a larger tank on my pontoon? Installation depends on available deck space and mounting hardware. Ensure structural support and proper securing methods during installation.