Portable Boat Fuel Gas Tank 12L 3 Gallon Marine Outboard - Compact

In this review of the Portable Boat Fuel Gas tank 12L 3 Gallon Marine Outboard Gas Tank, the bottom line is simple: it is a compact, lightweight external fuel reservoir designed for small outboard engines and day boating. The reviewer finds it best for boaters who need a simple, replaceable portable tank that pairs with common marine fuel lines and can replace Yamaha 6YL-24201-24-00 style connectors. Its strongest selling point is the practical size and UV resistant polyethylene construction that keeps the tank light yet durable for short trips.

Key Features

• Capacity: The nominal 12L / 3 gallon size provides a compact fuel supply suitable for short outings while remaining easy to stow in a small craft.
• Material: Made from UV resistant polyethylene, the tank resists sun degradation and remains stable during regular exposure to sunlight.
• Connector compatibility: Includes a standard marine fuel line connector designed to interface with outboard engines (more than 6 HP), making hookup straightforward.
• Ventilated screw cap: The screw cap with vent helps adjust air pressure balance so fuel flows more reliably during use.
• Portable dimensions: At roughly 36.5cm long, 27.5cm wide and 26cm high, the tank is small enough to carry and store on many boats without taking significant space.
• Lightweight: At about 1.4kg empty and 2mm wall thickness, the tank is easy to handle when filling or moving on deck.

Who It's For

This tank suits recreational boaters, anglers, and tender owners who need a simple external fuel source for small outboards, especially those looking for a lightweight replacement that fits Yamaha-style connectors. It is practical for day trips, short runs, or as a spare tank for emergency use.

Those who need large-range refueling, integrated fuel systems for long-distance cruising, or heavy-duty commercial use should look elsewhere; reports of port leakage and occasional check valve issues mean it is best for casual use rather than continuous heavy service.

Pros & Cons

Pros

• Lightweight and compact, easy to carry and store on small boats.
• UV resistant polyethylene construction offers good basic durability in sun-exposed conditions.
• Standard nozzle and connector make it compatible with many outboard engines over 6 HP.
• Ventilated screw cap aids fuel flow and pressure balance during operation.

Cons

• Some customers report leakage from tank ports and occasional failures of the check valve during installation or use.
• The labeled 12L capacity is effectively nearer to 11.3 liters in usable volume, which may be smaller than some expect.

Specifications

Fuel capacity	3 gallons (nominal 12L, usable about 11.3L)
Material	UV resistant polyethylene
Dimensions (L x W x H)	36.5cm x 27.5cm x 26cm
Weight (empty)	About 1.4kg
Wall thickness	2mm
Connector	Standard marine fuel line, replace for Yamaha 6YL-24201-24-00 style

Our Verdict

For weekend boaters and owners of small outboards, this portable 12L tank represents good value as a compact, lightweight spare or day-use fuel source. It performs well for short trips and is attractively simple to hook up, but buyers should be prepared for occasional fitment or seal issues and the slightly smaller usable capacity than the nominal rating.

Frequently Asked Questions

Is this tank compatible with Yamaha outboards?
Yes, it uses a standard marine fuel line connector intended to replace Yamaha 6YL-24201-24-00 style fittings and works with many outboards over 6 HP.

How much fuel does it actually hold?
While marketed as 12L, the practical usable volume is about 11.3 liters, equivalent to 3 gallons nominal.

Are there common durability issues?
Most users find the polyethylene construction durable, but some report leaks from ports or check valve breakage, so inspect fittings and seals after purchase.