The 7 Best Marine Fuel Tank caps (2023 reviews)

marine fuel tank caps
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We consider a marine fuel tank cap to be a worthy investment in the long run. We are here to help you choose the right one for your purposes from all the best available products in market today.

Our review process:

Our Top Picks:

Moeller Great replacement Cap
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Moeller Marine Fuel Tank Cap
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Fdit Marine Fuel Tank Cap
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Longzhuo Marine Fuel Tank Cap
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Semetall Marine Fuel Tank Cap
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Maxhanest Marine Fuel Tank Cap
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Kuuleyn Marine Fuel Tank Cap
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Moeller Great replacement Cap

Moeller Great replacement Cap
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The moeller great replacement cap should be able to handle its purpose and duties with ease. This cap fits the 3 gallon west marine (attwood) boat gas tank. It snaps shut and fills from the left rear side of the boat. It fits both the 6 gallon and 3 gallon new EPA Attwood tanks. The new one is all plastic (thank you) and will not rust (thank you) - a much better non OEM replacement.

This cap fits great on a typical red plastic 6 gal tank that sits in the bottom of a fishing boat. It is perfect fit for older fuel tanks and has a relief valve. The cap fit perfectly and is adjustable for pressure release from the tank instead of the tank pressure flooding your engine. It is a great replacement cap with a vent.

Why We Like This:
  • Works much better than the non-vented cap
  • Works well vents properly, well made, fits perfect
  • New cap for boat gas tank, fits good
  • Well made gas cap and elimates the plastic tank from

Moeller Marine Fuel Tank Cap

Moeller Marine Fuel Tank Cap
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Moeller has been making great cap for years, thanks to a combination of clever design and appropriate materials. It works well, no swollen tank from Florida heat. It is not eps compliant but works great, self venting with no tank bulging or shrinking. The manual vent is perfect. It is a bit tighter-fitting when you screw it on, but it works with an old Neptune 6 gallon marine fuel tank. It has more to do with the way the boat rides in the water than anything else.

Why We Like This:
  • More beachball shaped portable fuel tanks
  • Good brand reputation

Fdit Marine Fuel Tank Cap

Fdit Marine Fuel Tank Cap
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Not everyone likes to purchase cap for their daily usage, but the fdit marine fuel tank cap would be an anomoly. The rubber sealing ring makes the combination between cap and tank effective to prevent leaking. It has good accuracy, polish degree, brightness and flatness. It is rigorous, and every interval in the product is made according to the standard.

Why We Like This:
  • Adopts premium 316 stainless steel material, rust and resistant
  • Best accessory in boat that can withstand severe performance on sea
  • Lot of satisfied buyers

Longzhuo Marine Fuel Tank Cap

Longzhuo Marine Fuel Tank Cap
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The longzhuo marine fuel tank cap might be a relatively new release, but it's still nothing short of impressive this year, thanks to multiple price cuts and added new features over the past few months. The universal fuel oil tank cover is lightweight, easy to carry and replace, and is suitable for 12l/14l ocean ship fuel tanks. The replacement gas cap for the boat has a good sealing effect, preventing fuel leakage and dust from entering the fuel tank.

The outboard fuel tank cover is easy to install and can directly replace a large number of old or damaged fuel tank covers. The fuel tank cap is made of high-quality ABS plastic material, which is durable and not easily damaged. It is suitable for 12l / 14l fuel tank of marine boats. The marine fuel tank cap has good rust and corrosion resistance, long service life and high reliability.

Why We Like This:
  • Help customers, customer achievement, integrity and responsibility
  • Good brand reputation

Semetall Marine Fuel Tank Cap

Semetall Marine Fuel Tank Cap
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Not everyone likes to purchase cap for their daily purpose, but the semetall marine fuel tank cap would be an anomoly. The Outboard gas tank lid has an excellent sealing effect to avoid fuel leakage and prevent dust from entering the fuel tank. It is made of high-quality plastic material, durable and not easily damaged.

Why We Like This:
  • Fit for most 12l 24l outboard engine fuel tank
  • Good brand reputation

Maxhanest Marine Fuel Tank Cap

Maxhanest Marine Fuel Tank Cap
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The maxhanest marine fuel tank cap is capable of outshining several other cap featured in this list in overall features for the price point.

Why We Like This:
  • Fit for most 12l 24l outboard engine fuel tank
  • Lot of satisfied buyers

Kuuleyn Marine Fuel Tank Cap

Kuuleyn Marine Fuel Tank Cap
Buy on Amazon

Compared with other cap in this category, the kuuleyn marine fuel tank cap has a convenient design. The marine fuel tank cap is the best accessory on the ship, which can withstand the harsh performance at sea. It is made of highquality 316 stainless steel materials, which has rust and corrosion resistant. The rubber sealing ring makes the combination between cap and tank effective to prevent leaking. It is processed by professional manufacturing, it has precise design, good accuracy, polish degree, brightness and flatness.

Why We Like This:
  • Good brand reputation
  • Good investment for long term