Peterbilt 567/579 Diesel Fuel Tanks

Frequently Asked Questions About Peterbilt 567/579 Diesel Fuel Tanks

Will this fuel tank fit my Peterbilt 567 or 579 without modification?

Fuel tanks in this category are designed to match the mounting configuration and frame dimensions of the Peterbilt 567 and 579 models. However, fitment can vary based on tank capacity, step configuration, and the specific year of your truck, so it's important to check the listed specifications and measurements against your existing tank before ordering. If you're unsure, reach out to our team with your VIN or truck details for confirmation.

What materials are these fuel tanks made from, and how do they hold up over time?

Diesel fuel tanks for these models are typically constructed from aluminum, which offers a good balance of durability and weight savings compared to heavier materials. Aluminum tanks resist corrosion better than untreated steel, but proper mounting and regular inspection of straps and brackets will help extend the life of the tank and prevent wear from road vibration.

What sizes and capacities are available for these tanks?

Tanks in this category come in a range of capacities to match different chassis setups and fuel needs, from smaller capacity options to larger long-haul configurations. Capacity is usually tied to the physical dimensions of the tank, so be sure to confirm both the gallon capacity and the length/diameter fit your frame rail spacing and step or battery box configuration.

Do these tanks come with the mounting straps, brackets, and hardware needed for installation?

This varies by product listing. Some fuel tanks include mounting straps and hardware, while others are sold as the tank only, requiring you to reuse existing brackets or purchase them separately. Always check the product description for what's included before ordering so you're not caught short on installation day.

Can I install a replacement fuel tank myself, or should I have a shop do it?

Installation involves draining and disconnecting the old tank, removing mounting straps, and transferring or reconnecting fuel lines, sending units, and vent lines, which is a job many experienced DIYers and fleet technicians can handle with the right tools and safety precautions. That said, if your truck has an integrated fuel-water separator, additional plumbing, or you're not comfortable working around diesel fuel systems, having a qualified technician handle the swap is a safer bet.