FDJ 5 Gallon Universal Generator Fuel Tank — Extended-Run Replacement for Honda EC2500 & 2–3 kW Models, Includes Maintenance Kit

The FDJ Universal 5 Gallon Generator Gas Fuel Tank is a high-capacity replacement tank that extends run time for 2–3 kW portable generators while including a full maintenance kit for easy installation.

When you need longer unattended power from a small portable generator — for home backup, job-site equipment, or outdoor events — the standard factory tank can be a limiting factor. The FDJ 5-gallon universal tank is engineered to be a direct replacement for common Honda EC2500 installations and fits many popular 2–3 kW models from Predator, Champion, Duromax and others. Built from impact-resistant plastic, it resists rust and UV exposure and ships with everything required to mount and service your unit.

How much longer will my generator run with this tank?

Run time depends on load and generator efficiency, but a true 5-gallon capacity substantially increases operational hours versus stock tanks. The design allows more fuel on board so you can reduce refueling frequency during extended outages or long workdays.

• Holds up to nominal 5 gallons (usable volume slightly less for safety).
• Best for 2–3 kW generators where stock tanks are 1–2 gallons.
• Extended hours under light-to-moderate loads; check generator fuel consumption for exact estimates.

Will this tank fit my specific generator model?

FDJ built this tank to be broadly compatible with many compact generator models, but fitment depends on mounting hole spacing and clearance. Carefully compare your generator’s mounting dimensions with the FDJ specifications before purchasing.

• Designed to replace Honda EC2500 style tanks and many Predator, Champion, Generac, Duromax models.
• Mounting footprint: 20" L x 13.19" W — verify against your chassis.
• Confirm fuel cap/vent arrangement and hose routing for a seamless swap.

What comes with the FDJ tank and how hard is installation?

The tank includes a comprehensive maintenance kit so you don’t need to buy extra parts for a typical replacement. Installation is straightforward for anyone comfortable with basic generator maintenance and hand tools.

• Kit includes fuel petcock, fuel line, spark plug, air filter, and gaskets.
• Pre-installed rubber grommets reduce vibration and simplify mounting.
• Clear fuel gauge integrated into the tank for quick level checks during setup.

Are there any important design details or limitations I should know?

Yes — this tank is made without an integrated vent valve because many generators manage venting through the existing fuel cap. Also, actual usable capacity is slightly below five gallons to allow expansion and prevent overflow.

• No built-in vent valve; confirm your generator’s venting approach first.
• Durable, impact-resistant plastic resists rust and UV damage for outdoor use.
• Check height and mounting hole spacing to ensure clearance and compatibility.

Who this is for: The FDJ Universal 5 Gallon Generator Gas Fuel Tank is for homeowners, contractors, and outdoor enthusiasts who need longer unattended runtime from small portable generators. Choose this tank if you own a 2–3 kW generator compatible with the listed models, want corrosion-resistant construction, and prefer a replacement that comes with installation and maintenance parts for a one-stop upgrade.