Frequently Asked Questions About Ford F600-F700 Truck Diesel Fuel Tanks

What years and models are these fuel tanks compatible with?

Our diesel fuel tanks are designed to fit Ford F600 and F700 trucks from 1980 through 2003. These tanks are direct replacements for medium-duty Ford trucks with diesel engines, including models with Caterpillar 3126, Cummins 5.9L, and Ford/International diesel powerplants. Always verify your specific truck's year and engine configuration before ordering, as tank mounting brackets and fuel line connections can vary between model years.

What material are these fuel tanks made from, and how thick is the construction?

Most replacement fuel tanks for F600-F700 trucks are constructed from either 14-gauge aluminized steel or 16-gauge aluminum. Aluminized steel tanks offer excellent corrosion resistance at a lower price point, while aluminum tanks provide superior longevity and weight savings. Both materials meet or exceed OEM specifications. Steel tanks typically feature a powder-coated finish for additional protection against road salt and weather exposure.

Do I need special tools or modifications to install these fuel tanks?

Installation typically requires basic hand tools including socket sets, wrenches, and a floor jack or lift. Most tanks are designed as direct bolt-in replacements using existing mounting points. However, you may need to transfer components from your old tank including the fuel sending unit, pickup tube, and rollover valve. Some installations require new fuel line fittings or adapters, especially when upgrading from a steel to aluminum tank. Professional installation typically takes 2-3 hours.

What tank capacities are available, and will aftermarket tanks affect my fuel gauge accuracy?

Standard replacement tanks are available in 40, 50, and 60-gallon capacities, with some dual-tank setups offering up to 100 gallons total capacity. Side-mount and rear-mount configurations are both available depending on your truck's setup. Aftermarket tanks are designed to work with your existing fuel gauge sending unit, though recalibration may be needed if you're changing tank capacity. We recommend purchasing a new sending unit when replacing tanks over 10 years old to ensure accurate fuel level readings.

How do I know if I need tank straps, mounting hardware, or other accessories?

Tank straps and mounting brackets are often sold separately from the tank itself. Inspect your existing hardware for rust, stretching, or damage before installation. We recommend replacing straps if they show any signs of corrosion or if the rubber isolators are cracked. Additional items you may need include new fuel filler hoses, vent lines, fuel tank switching valves for dual-tank systems, and anti-siphon devices. Check your local regulations as some states require specific venting configurations for diesel tanks.