
Attwood Portable Fuel Tanks are designed for use in all marine and non-marine small engine applications. They are EPA and CARB certified and include an exclusive ratcheting, automatic low-restriction, high-flow fuel cap that ensures proper fuel flow and engine performance in all conditions. The tanks are constructed of the same high-strength multilayer Co-extruded HDPE/EVOH material as found in automotive fuel systems. They are available in various sizes, including 3 gallons, 6 gallons, and 12 gallons, and feature an automatic vacuum valve that ensures proper fuel flow and eliminates the need for manual venting.
| Characteristics | Values |
|---|---|
| Construction | Multi-layer Co-extruded HDPE/EVOH material |
| Certifications | EPA and CARB standards |
| Fuel Cap | Exclusive ratcheting, automatic low-restriction, high-flow |
| Fuel Fittings | Compatible with 1/4" NPT |
| Fuel Flow | Automatic vacuum valve eliminates the need for manual vent |
| Fuel Type | Gasoline |
| Engine Applications | Marine and non-marine small engines |
| Tank Capacity | 3, 6, or 12 gallons |
| Durability | High strength, impact-resistant, leak-free |
| Performance | Improved engine life and performance, reduced fuel pump wear |
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What You'll Learn

Attwood portable fuel tank capacity
Attwood portable fuel tanks are available in 3-gallon, 6-gallon, and 12-gallon capacities. The 3-gallon tank is perfect for small outboards, while the 6-gallon tank can adapt to virtually any outboard engine. The dimensions of the 3-gallon tank are 16"L x 11"W x 7"H, and the 6-gallon tank measures 19.82"L x 13.5"W x 9.16"H. The 12-gallon tank has two size options: the standard size is 22.75"L x 14.25"W x 14.36"H, while the low-profile option measures 24.00"L x 18.00"W x 11.61"H.
These portable fuel tanks are designed for use in marine and non-marine small engine applications and are EPA and CARB certified. They are constructed of high-strength, multi-layer co-extruded HDPE/EVOH material, which is the same as that found in automotive fuel systems. This material prevents the evaporation of gasoline, saving gas and money. The tanks include an exclusive ratcheting, automatic low-restriction, high-flow fuel cap that ensures proper fuel flow and engine performance in all conditions. The cap also exceeds OEM requirements and reduces wear on fuel pumps, improving engine performance and extending its life.
Additionally, the Attwood portable fuel tanks feature an automatic vacuum valve, which ensures proper fuel flow and eliminates the need for manual venting. This valve, along with the cap's automatic vacuum feature, enhances leak-free performance, even in severe conditions. The tanks are also compatible with 1/4" NPT fuel fittings.
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Attwood fuel tank construction
Attwood Portable Fuel Tanks are constructed of high-strength Multi-layer Co-extruded HDPE/EVOH material, which is the same material used in automotive fuel systems. This construction prevents the evaporation of gasoline, saving gas and money. The tanks are certified to EPA and CARB standards and include an exclusive ratcheting, automatic low-restriction, high-flow fuel cap that ensures proper fuel flow and engine performance in all conditions.
The fuel cap exceeds OEM requirements and reduces wear and tear on fuel pumps, improving engine performance and life. Attwood Portable Fuel Tanks are designed for use in all marine and non-marine small engine applications and will provide years of leak-free performance. The automatic vacuum valve ensures proper fuel flow and eliminates the need for manual venting.
The tanks are compatible with 1/4" NPT fuel fittings and include a high-strength Universal Pick-Up Tube. They also feature an exclusive no-joint injection-moulded tank interface, ensuring leak-free performance in severe conditions. The tanks have additional capacity for a 1:16 2 cycle oil blend and 5% vapour space for fuel thermal expansion.
Attwood's EPA Certified Portable Fuel Tanks meet EPA CFR 40 1060.104 running loss requirements for use with non-marine small engines. All Attwood portable fuel components are designed to exceed OEM engine fuel flow requirements.
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Attwood fuel cap and fuel flow
Attwood portable fuel tanks are constructed of high-strength Multi-layer Co-extruded HDPE/EVOH material, which is the same material used in automotive fuel systems. They are certified to EPA and CARB standards and include an exclusive ratcheting, automatic low-restriction, high-flow fuel cap that ensures proper fuel flow and engine performance in all conditions.
The high-flow fuel cap exceeds OEM requirements, reducing wear on fuel pumps and improving engine performance and life. The automatic vacuum valve in Attwood fuel tanks ensures proper fuel flow and eliminates the need for manual venting. The multi-layer tank material prevents the evaporation of gasoline, saving gas and money.
Attwood's exclusive Fuel Demand Valve ensures that pressurised fuel does not reach the engine, preventing engine flooding and fuel spillage. The fuel tanks are designed for use in all marine and non-marine small engine applications and will provide years of leak-free performance.
The Attwood Portable Fuel Tank Cap with Tether is EPA-certified and features a ratchet that ensures a proper seal, while the tether prevents cap loss. It is designed for engines with 0 to 350 horsepower.
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Attwood fuel tank safety
Attwood fuel tanks are designed with safety in mind. They are constructed from high-strength, multi-layer, co-extruded HDPE/EVOH material, which is the same material used in automotive fuel systems. This construction prevents the evaporation of gasoline, saving gas and money.
Attwood fuel tanks are certified to EPA and CARB standards and include a ratcheting, automatic low-restriction, high-flow fuel cap. This fuel cap design ensures proper fuel flow and engine performance in all conditions. It also reduces wear on fuel pumps, improving engine performance and extending the life of the engine.
The tanks feature an automatic vacuum valve, which ensures proper fuel flow and eliminates the need for manual venting. This valve also plays a crucial role in preventing fuel evaporation and fuel loss. Attwood's exclusive Fuel Demand Valve is another safety feature that ensures pressurized fuel does not reach the engine, thereby preventing engine flooding and fuel spillage.
For added safety, all Attwood portable fuel tanks manufactured after January 1, 2011, for sale in the United States are required to remain sealed up to a minimum of 5 psi, as per new EPA regulations. This assists in preventing fuel evaporation and is designed to exceed OEM engine fuel flow requirements.
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Attwood fuel tank maintenance
Attwood fuel tanks are designed for long-term, leak-free performance. However, there are some maintenance steps that should be taken to ensure the tank's efficiency and longevity.
Firstly, it is important to note that Attwood fuel tanks are constructed with high-strength, multi-layer, co-extruded HDPE/EVOH material, which is the same material used in automotive fuel systems. This material prevents the evaporation of gasoline, saving gas and money. Therefore, it is crucial to maintain the integrity of the tank's construction. Regularly inspect the tank for any signs of damage, such as cracks, punctures, or leaks. If any issues are identified, it is recommended to replace the tank to avoid fuel leakage and potential safety hazards.
Another key aspect of Attwood fuel tank maintenance is ensuring proper fuel flow. The tanks are designed with an automatic vacuum valve that regulates fuel flow and eliminates the need for manual venting. However, it is still important to periodically check the fuel cap to ensure it is functioning correctly. The fuel cap should be tight and secure, and the ratcheting mechanism should engage properly. Additionally, the fuel tank should be kept clean and free of debris, as contaminants can interfere with fuel flow and engine performance.
To maintain the longevity of the Attwood fuel tank, it is essential to follow the manufacturer's guidelines for fuel type and capacity. Using the incorrect type of fuel or overfilling the tank can lead to operational issues and potential damage. It is also important to allow the engine to cool down before refuelling to avoid fuel spillage and engine flooding.
Finally, proper storage and handling of the Attwood fuel tank are crucial. When not in use, store the tank in a cool, dry place, away from direct sunlight or extreme temperatures. This will help prevent fuel degradation and tank damage. Additionally, always handle the tank with care, avoiding any impact or rough handling that could compromise its structural integrity.
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Frequently asked questions
Attwood Portable Fuel Tanks are made of high-strength Multi-layer Co-extruded HDPE/EVOH material, which is the same material used in automotive fuel systems.
Attwood offers portable fuel tanks in various sizes, including 3 gallons, 6 gallons, and 12 gallons.
Yes, Attwood Portable Fuel Tanks are designed to provide years of leak-free performance, thanks to their robust construction and exclusive high-flow fuel cap.
Attwood Portable Fuel Tanks feature an automatic vacuum valve that ensures proper fuel flow and eliminates the need for manual venting, maintaining optimal engine operation.
Yes, Attwood Portable Fuel Tanks are EPA-certified and meet the EPA CFR 40 1060.104 running loss requirements for use with non-marine small engines. They are also designed to meet California Air Resources Board (CARB) regulations.











































