When you're putting in serious miles, you need a fuel tank you can count on. Our Freightliner Cascadia 113 and 125 diesel fuel tanks are built tough for daily use—whether you're running cross-country loads or regional routes. Available in 45 to 150 gallon sizes, these aluminum tanks are lightweight, corrosion-resistant, and ready to handle whatever the road throws at you.

Why Upgrade Your Cascaida 113/125 Diesel Fuel Tank?

- More range, fewer stops: Go farther between fill-ups with high-capacity options designed for long-haul efficiency. - Front fill or rear fill options: Choose the setup that works best for your rig’s layout and workflow. - Aluminum durability: These tanks are rust-resistant, lightweight, and built to last under real-world driving conditions. - Direct fit for Cascadia models: Designed to fit your Freightliner 113 or 125 without modification or guesswork. - Add-on steps & fairings available: Optional stainless steel fairing fuel tank steps make it easier to access your tank—no stretching or climbing required.

Shop Replacement Aluminum Fuel Tanks Today

Whether you're replacing a damaged tank or upgrading to a larger diameter for fewer pit stops on the road, we’ve got the aftermarket fuel tanks built to meet the demands of your Freightliner Cascadia. If you're upgrading your tank, throw in new fuel tank brackets and straps to match the larger diameter and width, and try out lockable fuel tank cap for a bit of added security.