Best Auxiliary Fuel Tanks for Generators to Extend Runtime
Auxiliary fuel tanks provide an efficient solution for extending the operating time of your generator, especially in remote locations or during prolonged power outages. Choosing the right tank depends on capacity, material, compatibility, and additional features like fuel gauges or vent valves. Below is a summary of top auxiliary fuel tanks available on Amazon, followed by detailed reviews and a comprehensive buying guide to help you select the perfect fuel tank to meet your power needs.
| Product Name | Brand | Capacity | Material | Key Feature |
|---|---|---|---|---|
| Attwood 8812LPG2 EPA Certified 12 Gallon Portable Fuel Tank | Attwood | 12 Gallons | Automotive-Grade Construction | Built-in vacuum valve cap |
| JJing Universal 7 Gallon Generator Gas Fuel Tank | JJing | 7 Gallons | Durable Metal | Fuel gauge & rubber grommets included |
| Z-GS-0795-AP Replacement Fuel Tank for DeVilbiss and Excell Generators | DeVilbiss, Craftsman | Varies (brand specific) | Reinforced seal with zippered seam | Includes mounting hardware |
| RDS MFG INC Rectangular Auxiliary Fuel Tank | RDS MFG INC | 69 Gallons | Heavy-duty construction | Large capacity tank, suitable for electric fuel pump siphoning |
| JSD 9 Gallon Aluminum Auxiliary Vertical Gas Tank | JSD AUTO PARTS | 9 Gallons | Corrosion-resistant Aluminum | Heavy-duty with mounting brackets |
Attwood 8812LPG2 EPA Certified 12 Gallon Portable Fuel Tank
The Attwood 8812LPG2 is designed with automotive-grade, multi-layer construction that can withstand the pressure build-up common in closed fuel systems. It features a cap with a built-in vacuum valve, eliminating the need for manual venting during operation. This tank complies with both EPA and CARB regulations, ensuring eco-friendly fuel storage.
This 12-gallon capacity tank offers ample fuel storage to keep your generator running longer during outages or work projects. The durable build and certified compliance make it suitable for various portable generators and outdoor applications.
JJing Universal 7 Gallon Generator Gas Fuel Tank
The JJing Universal 7 Gallon Tank is compatible with many Honda generator models including EC6500 and EM6500 series. It features a built-in fuel gauge and rubber grommets, making installation easier. The overall dimensions measure 23-1/4″ length by 16.1″ width, so checking your generator’s mounting space before purchase is advised.
Note that this model does not include a vent valve, so users requiring vented tanks should consider alternatives. The tank’s true capacity is slightly less than 7 gallons, a common trait among similar tanks in the market. Its sturdy construction supports long-term use but is best matched carefully to compatible generator models.
Z-GS-0795-AP Replacement Fuel Tank for DeVilbiss and Excell Generators
This replacement tank is specifically designed for DeVilbiss and Excell generators, servicing several previous versions with a newly designed access hole on top. Its enhanced zippered seal with reinforced walls and larger mounting surface provides better durability and leak prevention.
The package includes all necessary new hardware, including a Viton grommet and a fuel tank petcock, facilitating an easy replacement process without additional purchases. This tank ensures brand-specific compatibility, making it a reliable choice for these generator models.
RDS MFG INC Rectangular Auxiliary Fuel Tank – 69 Gallon
The RDS MFG INC 69 Gallon Tank is a large capacity auxiliary fuel tank designed for serious fueling needs. It supports gasoline auxiliary fueling via siphon from the top of the tank using an electric fuel pump, making it suitable for extended generator usage in off-grid or commercial settings.
The tank dimensions (57″ L x 18″ W x 16″ H) accommodate significant fuel volume without excessive footprint. RDS offers various tank sizes to meet diverse requirements, but this model stands out for applications demanding long continuous runs.
JSD 9 Gallon Aluminum Auxiliary Vertical Gas Tank
The JSD 9 Gallon Aluminum Tank offers excellent build quality, utilizing corrosion-resistant aluminum alloy suited for rugged outdoor and workshop environments. Its vertical design includes two powder-coated steel brackets for straightforward mounting and rust resistance.
Used by top American speed shops, this heavy-duty fuel cell ensures long-lasting performance under demanding conditions. Its 1/4 NPT outlet fits standard fuel lines, making it adaptable for small to medium-sized generators or lawn equipment.
Buying Guide for Generator Auxiliary Fuel Tanks
When selecting the best auxiliary fuel tank for your generator, consider the following key factors to maximize efficiency and compatibility:
Capacity Requirements
Choose a tank size based on the duration you intend to run your generator. Smaller tanks (5-12 gallons) suit portable generators, while larger tanks (20+ gallons) fit stationary or commercial setups. Larger capacity reduces refilling frequency but requires more space.
Material Durability
Look for high-quality materials such as automotive-grade steel or corrosion-resistant aluminum. Durable construction ensures longevity and resistance to environmental factors like rust, UV exposure, and rough handling.
Compatibility and Mounting
Check compatibility with your generator’s model and mounting dimensions. Some tanks are brand or model-specific, providing hardware for easy installation. Universal tanks require careful measurement to fit correctly and securely.
Ventilation and Emission Standards
EPA and CARB certifications indicate compliance with environmental regulations. Tanks with built-in vacuum valves or vent caps prevent fuel vapor buildup, improving safety. Consider vented vs. non-vented tanks based on your operational needs.
Additional Features
Fuel gauges provide convenience by allowing you to monitor fuel levels easily. Rubber grommets and mounting brackets simplify installation and reduce vibration. Also, check if the tank includes all necessary hardware to avoid separate purchases.
Usage Environment
For outdoor or harsh environments, opt for robust tanks resistant to impacts and corrosion. Portable tanks should be lightweight enough for easy transport, while stationary tanks benefit from stability and protection features.
Fuel Line and Outlet Types
Ensure compatibility of fuel outlet fittings (e.g., 1/4 NPT) with your generator’s fuel line. Proper connections prevent leaks and ensure steady fuel delivery to the generator.
Assessing these perspectives will help you select the best auxiliary fuel tank tailored to your generator’s specifications and your power supply demands.