In times of extended power outages, remote operations, or outdoor events, one of the most common challenges faced by generator users is limited fuel capacity. While generators are a reliable source of backup electricity, their standard fuel tanks often only provide power for a few hours—requiring manual refueling, which can be inconvenient, inefficient, or even risky depending on the conditions.
To overcome this limitation, many homeowners, contractors, and outdoor enthusiasts turn to extended fuel tanks for generators. These products are designed to either supplement or replace factory fuel tanks, significantly increasing the run time of generators without interruption. Whether you’re running a portable generator for a construction site or ensuring continuous power for critical appliances during a blackout, a generator extended fuel system can make a world of difference.
Generator Fuel Tanks and Accessories
| Product Name | Links |
|---|---|
| YOOWEE Single System Clam Kit HND1.2CS | Check Amazon Price |
| Attwood 8806LP2 6 Gallon Portable Fuel Tank | Check Amazon Price |
| Z-GS-0795-AP Replacement Fuel Tank for DeVilbiss | Check Amazon Price |
| JJing Universal 7 Gallon Generator Fuel Tank | Check Amazon Price |
| maXpeedingrods 12V DC Gasoline Electric Fuel Pump | Check Amazon Price |
Detailed Product Overview and Use Case Scenarios
YOOWEE Single System Clam Kit HND1.2CS
Function: Extended runtime kit (no tank)
Compatibility: Honda EU1000i & EU2000i
This specialized kit by YOOWEE is a popular choice among Honda generator owners looking to extend runtime using an external fuel source. While it does not include a fuel tank itself, it is designed to work with commonly available marine or gas tanks. The system connects directly to the Honda EU1000i or EU2000i generators and uses a vacuum draw design to pull fuel as needed, reducing manual refills.
Best for: Homeowners and RV users with Honda generators who want to convert their units into high-endurance power sources.
Attwood 8806LP2 6 Gallon Portable Fuel Tank
Function: 6 Gallon External Fuel Tank
Compatibility: Universal marine style
The Attwood 8806LP2 is a durable and high-capacity plastic fuel tank made to meet EPA and CARB standards. Originally designed for marine use, it has gained popularity as an external fuel solution for generators due to its universal compatibility and solid construction. With a six-gallon capacity, this tank can keep your generator running for extended periods without needing attention.
Best for: Users looking for a rugged, weather-resistant tank for outdoor generator setups or marine equipment.
Z-GS-0795-AP Replacement Fuel Tank for DeVilbiss
Function: Specific OEM-style replacement tank
Compatibility: DeVilbiss & Excell Generators
This OEM replacement fuel tank is designed specifically for select models of DeVilbiss and Excell generators. If your existing tank is cracked, leaking, or simply not holding enough fuel, this is an excellent factory-style replacement. Its direct compatibility ensures easy installation with minimal modifications required.
Best for: Owners of compatible DeVilbiss or Porter Cable generators seeking a direct tank replacement or improved runtime.
JJing Universal 7 Gallon Generator Fuel Tank
Function: High-capacity fuel tank (approx. 7 gallons)
Compatibility: Honda EC6500 series and others
This 7-gallon universal tank from JJing offers a convenient upgrade for generator users who need longer run times than what their built-in tank allows. Compatible with a variety of models including the Honda EC6500 series, this fuel tank is suitable for users who demand high runtime for continuous operations. It includes integrated mounting features and comes ready for installation.
Best for: Contractors, RV owners, and emergency preparedness setups that require long uninterrupted generator usage.
maXpeedingrods 12V DC Gasoline Electric Fuel Pump
Function: Electric fuel pump accessory
Compatibility: For extended runtime generator systems
The maXpeedingrods 12V DC fuel pump is a valuable add-on for generator users building custom extended fuel systems. It helps move fuel from an external tank to the generator without relying on gravity or manual siphoning. Ideal for high-demand setups, this fuel pump supports smooth fuel flow, especially over long distances or when using elevated tanks.
Best for: DIY users and professionals assembling large or custom fuel systems for uninterrupted generator operation.
Why Extended Fuel Tanks Matter
The benefits of using extended fuel tanks for generators go beyond just convenience. In many scenarios, these accessories can play a critical role in safety, efficiency, and long-term cost savings.
1. Longer Runtime with Fewer Interruptions
Whether powering your home during a blackout or running critical systems in a medical setup, extended tanks reduce the need to refuel frequently—minimizing risk and ensuring consistent power.
2. Enhanced Safety
Refueling hot generators can be dangerous. With larger external tanks or gravity-fed kits, you eliminate the need to open fuel caps frequently, which reduces the chance of burns or fuel spills.
3. Better Fuel Management
Using a larger tank allows for bulk fuel storage, which can be more cost-effective and reduces trips to refill containers—especially useful during emergencies or remote job sites.
4. Customization and Flexibility
From universal tanks to model-specific fuel pump kits, extended fuel systems let you tailor your generator’s fuel setup based on your needs. This is particularly useful for off-grid cabins, RVers, and campers.
Factors to Consider When Choosing an Extended Fuel Tank
When selecting the right fuel tank or system for your generator, several factors should influence your decision:
Fuel Capacity
Choose a tank that offers at least 5–7 gallons for medium to long-term runtime. Smaller kits like the YOOWEE system rely on external tanks, so capacity depends on the fuel source used.
Compatibility
Not all fuel tanks or kits work with every generator. Some are universal, while others are brand or model-specific. Always verify compatibility before purchasing.
Construction Material
Look for tanks made from high-density polyethylene (HDPE) or metal. HDPE tanks are lightweight and corrosion-resistant, while metal tanks offer greater durability but may require rust prevention.
Installation Requirements
Some systems require modifications or added parts like fuel pumps, clamps, or hoses. Choose a product that aligns with your mechanical comfort level or seek professional help for installation.
Regulatory Compliance
Make sure the tank or accessory meets local safety, EPA, and CARB standards if applicable, especially for prolonged outdoor use.
Maintenance Tips for Extended Fuel Systems
Maintaining your generator fuel system ensures long-term performance and safety:
- Inspect hoses and fittings regularly for leaks or wear.
- Clean fuel filters if included with your system.
- Store tanks in shaded, well-ventilated areas to reduce pressure build-up.
- Use fuel stabilizer in stored gasoline to prevent degradation.
- Flush and clean tanks periodically, especially when using them seasonally.
By following a basic maintenance schedule, you ensure your generator system is ready whenever you need it—whether for a storm, blackout, or weekend at a remote location.
Final Thoughts
Whether you’re preparing for extended outages, operating off-grid, or simply looking to streamline your generator setup, investing in the right extended fuel tank or fuel system can make a dramatic difference. With options like the YOOWEE extended runtime kit for Honda generators, high-capacity tanks like the JJing 7-gallon universal, or fuel management accessories such as the maXpeedingrods 12V fuel pump, there’s a tailored solution for every use case.
Generators are only as reliable as their fuel supply. By upgrading or supplementing your fuel storage system, you can extend runtimes, reduce manual labor, and ensure continuous, efficient operation when it matters most.