JJing 5-Gallon Universal Generator Fuel Tank — Replacement for 3200–4750W Generators, Fuel Gauge & Mount Grommets

This JJing 5-gallon universal replacement fuel tank supplies compatible gas storage for a wide range of small portable generators.

If your generator’s original tank is dented, leaking, or missing, this JJing universal 5-gallon tank is built to be a direct-fit replacement for many popular models. Made to match common mounting layouts and engine sizes, it includes a fuel gauge and rubber grommets and ships with small maintenance parts to simplify installation. Read the dimensions and feature notes carefully to ensure compatibility before ordering.

Which generators will this tank fit?

This tank is designed for many 3,000–4,750 watt class portable generators and commonly works with brands like Honda, Predator (Harbor Freight), Champion, Wen, Homelite, Duromax, and more. Fit depends on the mounting hole pattern and overall tank dimensions, so cross-check those against your generator.

• Commonly compatible with Honda EC2500 and similar EC series models.
• Fits Predator/Harbor Freight 3200–4000 watt models (several part numbers noted).
• Works with Champion, Wen, Homelite, Powermate, Duromax, Husky and Chicago Electric models in the 3200–4750W range.
• Supports engines around 196–224cc and 6.5–7.5 HP where the mounting matches.

How do I verify this tank will mount to my generator?

Measure the mounting footprint and compare it to the tank’s specified dimensions before purchase. The most important measurements are the hole-to-hole distances, overall length, width and height so you can confirm the grommet and bolt positions line up.

• Mounting hole-to-hole: 20 inches (length).
• Overall width: 13.19 inches; overall height: 5.9 inches.
• Check grommet locations and fuel outlet position against your existing tank.

What features and parts are included with the JJing tank?

The tank arrives with several installation and maintenance items to help you get back to running quickly. It has an integrated fuel gauge and rubber grommets pre-installed — features not always included with aftermarket tanks.

• Built-in fuel gauge for quick level checks.
• Pre-installed rubber grommets to match common mounting bolts.
• Accessory kit: flat washers, fuel petcock, fuel line, spark plug, air filter, carburetor gasket set, and muffler gasket.

Are there any important limitations I should know?

Yes—this tank does not include a vent valve, and its true usable capacity is slightly under the nominal 5 gallons, which is common for aftermarket replacement tanks. If you require a vented tank or a guaranteed exact 5.00 gallon capacity, this model may not meet that need.

• No vent valve is installed — confirm ventilation requirements first.
• Declared as 5 gallons but usable capacity is slightly less than 5.0 gallons.
• Returns for size or venting reasons are common if measurements aren’t checked prior to ordering.

Who is this for? This JJing universal 5-gallon fuel tank is aimed at DIYers, small business owners, and fleet managers who need an affordable replacement tank for mid-range portable generators. It’s especially useful if you have a generator in the 3200–4750 watt class from brands like Honda, Predator, Champion, Wen, or Duromax and can confirm the mounting dimensions match. If you need a vented tank or guaranteed exact five-gallon usable capacity, consider searching for a vented model or a manufacturer-specified OEM tank instead.