Mercury – Portable Marine Fuel Tank with Fuel Demand Valve | Red Blow-Molded Polyethylene | 8M0045692

Overview

There’s a certain comfort that comes from knowing your fuel system is dialed in before you ever leave the dock. When you’re running a small outboard, you don’t want to think about vapor lock, flimsy tanks, or guesswork. You just want steady fuel, clean starts, and the freedom to poke around shallow flats or cruise a quiet river without worry. That’s exactly why this Mercury Marine part — the 8M0045692 portable fuel tank — earns its keep. It’s the kind of gear you grab with confidence because it simply works, day after long day on the water.

Key Features

• Designed for portable fueling of Mercury, Mariner, and Force outboards
• Strong blow-molded polyethylene construction with UV protection
• Integrated top carry handle for easy, secure lifting
• Includes a diurnal cap and fuel demand valve
• Three-point-two gallon capacity
• Meets 2011 Environmental Protection Agency pressurized portable tank requirements
• Built to deliver stable fuel flow even during hot weather and long idle periods

Engine & Boat Compatibility

• Suitable for most portable Mercury, Mariner, and Force outboards
• Works with other outboard brands when used with the correct fuel line fittings
• Ideal for jon boats, dinghies, inflatables, skiffs, small center consoles, and utility boats
• Perfect for portable setups, backup fuel, or kicker motor systems

Performance & Practical Benefits

A small fuel tank may not seem like a big deal, but on the water, it absolutely is. You’ll feel the difference the first time you pick this one up — the tank feels sturdy, the walls don’t flex, and the molded handle gives you a solid grip even with wet hands. Once connected and vented properly, the fuel flow stays smooth and dependable, even when the boat is bouncing or the sun is beating down.

The built-in fuel demand valve is a quiet hero here. It keeps vapors from building pressure and helps prevent raw fuel from pushing toward the engine when the tank heats up. That means fewer problems, fewer surprises, and a far more predictable day on the water. Maintenance is refreshingly simple, too — just keep the tank clean, store it out of direct sunlight when not in use, and pair it with quality fuel lines.

Why Buy OEM

Choosing a genuine Mercury Marine part makes a real difference, especially with something as important as fuel delivery.

• You’re getting the exact tank Mercury designed, tested, and validated for real-world marine use.
• The materials hold up better to heat, motion, and the constant abuse of sun and water.
• Fitment is right the first time, eliminating leaks, vapor issues, and frustrating connections.
• Over the long run, OEM equipment saves money by avoiding the premature failures common with generic tanks.

If you’re the type of boater who values reliability over guesswork, OEM is the clear call.

FAQ

Q1: Which Mercury engines does this fuel tank fit?

It works with most portable Mercury, Mariner, and Force outboards, as well as other brands when matched with the correct quick-connect fittings.

Q2: What makes this different from cheaper aftermarket tanks?

The materials, the fuel demand valve, and the pressure-rated construction give it more stability, better flow control, and longer life.

Q3: How do I know if this is the right replacement?

Check your current tank’s capacity and connection style. If you need a portable, three-point-two gallon tank with standard Mercury fittings, this is the match.

Q4: Can this be used in saltwater and freshwater?

Absolutely. The tank is built to handle both environments and resists sun, heat, and constant exposure.

Q5: Is installation straightforward?

Yes — attach your fuel line, confirm the fitting, vent as needed, and you’re ready to run.