Best Extended Run Fuel Tank Solutions for Generators
When your generator needs reliable, long-lasting fuel support, an extended run fuel tank can be a game changer. This guide highlights practical options that extend runtime, improve refueling convenience, and fit a range of popular generators. From portable marine cans to replacement tanks and smart pump accessories, these picks help keep power available during outages, camping trips, or job sites. Each product is evaluated for compatibility, durability, and ease of use to help you compare effectively and choose the right extended run solution for your setup.
| Product | Brand | Type | Key Benefit |
|---|---|---|---|
| Attwood 8806LP2 | Attwood | Portable Tank | EPA-certified, vented cap, compliant |
| DeVilbiss / Excell Replacement Tank | DeVilbiss, Craftsman, Porter Cable, Excell | Replacement Tank | New design, reinforced seams, hardware kit |
| HND1.2CD Dual System Kit | sixcow | Extended Run Kit | Dual-system for multiple generators |
| maXpeedingrods 12V Pump | maXpeedingrods | Fuel Pump | Automatic fueling, continuous run |
| Scepter 6 Gallon | Scepter | Portable Tank | Built-in gauge, vented cap |
Attwood 8806LP2 Epa Certified 6 Gallon Portable Fuel Tank

The Attwood 8806LP2 is a compact, EPA-certified portable fuel tank designed for marine use but widely adaptable for generator back-up needs. It features a built-in vacuum valve cap that eliminates manual venting, simplifying refueling during emergencies or extended runs. Compliant with EPA and CARB, this tank reduces emissions concerns while providing a reliable fuel reservoir for compatible generators. Its compact footprint makes it suitable for tight spaces on workboats, RVs, and portable setups. The combination of a secure venting system and easy handling supports safer fueling practices during demanding power needs.
DeVilbiss / Excell Replacement New Style Fuel Tank

This replacement fuel tank kit is designed for DeVilbiss, Craftsman, Porter Cable, and Excell generators. It features a newly designed extended-run tank with a reinforced zippered seam, a larger mounting surface, and a complete hardware set including a Viton grommet and a fuel tank pedcock. The kit aims to improve runtime without frequent refueling and offers a brand-specific compatibility that minimizes fitment guesswork. The improved seal and mounting hardware support secure, leak-resistant operation, particularly during prolonged generator use.
HND1.2CD Dual System Extended Run Kit

The HND1.2CD Dual System Extended Run Kit provides a dual-fuel feed option designed to extend output for multiple generators. It is compatible with a wide range of Honda EU-series models as well as several Generac, Champion, Kipor, and Polaris units. The kit emphasizes no-midnight refueling by enabling one extended tank to feed both units, increasing convenience for long outages. Aircraft-grade anodized aluminum caps offer corrosion resistance and durability, while flexible rubber lines withstand wear in harsh conditions. This solution is especially suitable for users who want a shared extended-run setup across multiple machines.
maXpeedingrods 12V DC Fuel Pump

This automatic fuel pump is designed to extend generator running time by delivering fuel from an external tank without interrupting operation. The pump monitors fuel levels and automatically starts or stops to match demand, ensuring precise control and eliminating leaks. It connects with a quick and reliable interface to external fuel tanks (tank purchase may be separate). The pump enables continuous operation, reducing downtime and manual refueling interruptions, especially on larger setups or remote locations where frequent topping off isn’t convenient.
Scepter 6 Gallon Portable Marine Gas Can

The Scepter 6-gallon portable marine gas can is a robust option for extended runs, featuring a built-in fuel gauge and a two-way vented cap system that helps manage vapor and pressure safely. Its design supports under-seat storage on boats and can adapt to generator fuel needs beyond traditional tanks. The can accepts standard marine fittings, and its build quality aims to withstand rugged environments. For users prioritizing visibility of fuel levels and straightforward handling, this tank can be a practical addition to a mobile power setup.
Buying Guide: Key Purchase Considerations
Fuel capacity and compatibility: Match tank size to your generator’s fuel consumption and expected runtime. Consider whether you need a single large tank or a dual-system solution to support multiple units.
Vent and seal design: Look for vented caps and robust seals to minimize spills, vapor buildup, and odor during refueling, especially in enclosed spaces or boats.
Durability and material: Aluminum and stainless components resist corrosion and heat, extending life in outdoor or marine environments. Reinforced seams and quality hardware help prevent leaks.
Ease of use: Quick-connect fittings, clear fuel gauges, and simple mounting simplify installation and ongoing operation. Some kits include comprehensive hardware to reduce setup time.
Safety and compliance: EPA/CARB certification and safety features like leak resistance are important for long-term use and compliance with local regulations.
Compatibility notes: Verify model compatibility for kit components or tanks with your generator model, including brand-specific tanks and replacement parts.
Cost vs. value: Weigh tank capacity, added features (dual-feed, smart pump, gauge), and durability against price to determine the best long-term value for your situation.