Best Gas Tanks for Generators: Durable and Compatible Options
When it comes to powering your generator efficiently, having the right gas tank is essential. Whether you need a replacement tank or an upgrade, compatibility, fuel capacity, and build quality are key factors to consider. Below is a summary table of popular generator gas tanks that meet various needs and fit well with common generator brands such as Honda, Predator, and Generac.
| Product Name | Brand | Fuel Capacity | Compatible Generators |
|---|---|---|---|
| JJing Universal 7 Gallon Generator Gas Fuel Tank | JJing | 7 Gallons | Honda EC6500, EM6500, EM5500, and more |
| 7 Gallon Universal Generator Gas Tank by Automost | Automost | 7 Gallons | Honda EB5000, EM6500, Predator 6500-9000 |
| JMCHstore OEM Metal Generator Gas Fuel Tank | JMCHstore | 7.2 Gallons | Generac GP5500, GP6500, RS5500, and others |
| Z-GS-0795-AP Fuel Tank for DeVilbiss and Excell Generators | DeVilbiss, Craftsman, Porter cable, Excell | Brand Specific | DeVilbiss, Porter cable generators |
| YAMAKATO 7 Gallon Gas Fuel Tank for Honda Clone Generators | YAMAKATO | 7 Gallons | Champion, Honda clones 5KW-8KW generators |
JJing Universal 7 Gallon Generator Gas Fuel Tank Compatible with Honda Generators

This 7-gallon fuel tank by JJing fits a wide range of Honda generators including EC6500, EM6500, and EM5500 models. It comes with a fuel gauge and rubber grommets built-in for easy installation. Note that this tank does not have a vent valve, so ensure your generator’s needs align with this feature. Mounting sizes are 23-1/4″ length and 16.1″ width. The actual fuel capacity is slightly less than the stated 7 gallons, consistent with most market tanks. Accurate dimension checking before purchase is recommended to avoid returns.
7 Gallon Universal Generator Gas Tank Compatible with Honda and Predator

Built with quality iron and a durable paint baking process, this tank by Automost offers a sturdy option for Honda and Predator generators. It supports models such as Honda EB5000, EM5000, EM6500, and Predator 6500 to 9000. The package includes vital hardware like the fuel petcock, air filter, fuel line, gasket set, grommet set, and bolts, providing comprehensive replacement convenience for a hassle-free upgrade.
JMCHstore OEM Metal Generator Gas Tank for Generac Models

The JMCHstore OEM metal fuel tank offers a 7.2-gallon capacity compatible with multiple Generac generators including GP5500, GP6500, GP7500 models, and RS series. It caters to portable generators ranging from 5kW to 8kW, providing a reliable fuel storage solution designed specifically for these power units. Its robust construction suits heavy-duty use and frequent replacements.
Z-GS-0795-AP Replacement Fuel Tank for DeVilbiss and Excell Generators

This replacement tank is a brand-specific solution for DeVilbiss, Craftsman, Porter Cable, and Excell generators. It features a new design with an extended run capacity and zippered seal providing a larger mounting surface and reinforced walls. The kit includes new mounting hardware, Viton grommet, and fuel tank petcock, ensuring a complete and direct fit for compatible models.
YAMAKATO 7 Gallon Generator Fuel Tank for Honda Clone and Champion Models

Designed for Honda clone and Champion generators ranging from 5kW to 8kW, the YAMAKATO gas fuel tank has mounting holes and dimensions suited for many popular models. It has a 7-gallon capacity and fits multiple part numbers commonly found on Honda clone generators. Users should verify mounting hole placement and tank dimensions with their units before ordering to ensure compatibility.
Buying Guide for Generator Gas Tanks
Choosing the best generator gas tank involves understanding several key factors to ensure safe, efficient, and reliable fuel storage for your generator.
Compatibility
Check your generator’s make and model before selecting a gas tank. Many tanks are designed for specific brands or models such as Honda EC series, Generac GP series, or Predator generators. Confirm mounting hole spacing, dimensions, and any brand-specific fittings to avoid ill-fitting tanks.
Fuel Capacity
Fuel capacity usually ranges between 5 to 7 gallons for typical portable generators. Keep in mind that stated tank capacities can be slightly optimistic; actual usable capacity may be less. Consider how long you need your generator to run and choose a tank accordingly.
Material and Build Quality
Opt for tanks made of durable iron or metal with quality finishes like bake paint to resist rust and wear. Robust construction extends tank life under outdoor conditions and frequent handling.
Ventilation and Safety Features
Some tanks include vent valves to prevent pressure buildup during refueling or operations. If your generator requires vent valves, confirm that the tank includes one. Also, built-in fuel gauges and rubber grommets simplify installation and monitoring.
Included Hardware and Installation
Many tank kits come with essential hardware such as fuel petcocks, gaskets, bolts, and fuel lines, making replacement easier. Verify if these parts are included to avoid purchasing separately.
Size and Mounting Dimensions
Accurately measure your existing tank and mounting points. Compare these to product specifications focusing on length, width, height, and mounting hole distances.
Brand Specific vs Universal Tanks
Brand-specific tanks ensure a tailored fit and may come with compatible fittings, while universal tanks offer versatility but might require modifications. Assess which option best suits your needs.