Freightliner Cascadia 113/125 Diesel Fuel Tanks

Frequently Asked Questions About Freightliner Cascadia 113/125 Diesel Fuel Tanks

Will this fuel tank fit my specific Cascadia model year?

Freightliner Cascadia fuel tanks vary by chassis type (113 vs 125), tank capacity, mounting configuration, and model year, so fitment is not universal across the entire Cascadia lineup. Always check the listed specifications, including tank diameter, length, capacity, and strap or bracket style, against your truck's original tank before ordering. If you're unsure, have your VIN and the measurements of your existing tank on hand when contacting us so we can confirm compatibility.

What materials are these fuel tanks made from, and does it affect performance?

Diesel fuel tanks for the Cascadia are typically constructed from aluminum or steel, each with different weight, durability, and corrosion resistance characteristics. Aluminum tanks are lighter and naturally resist rust, which can be beneficial for fuel economy and long-term exposure to road elements, while steel tanks tend to be more rugged in certain applications. Check the product listing for the specific material used so you can weigh these factors against your operational needs.

Are these tanks new, used, or reconditioned?

Our inventory includes a mix of new aftermarket tanks and quality used take-off tanks removed from Cascadia trucks. Each listing specifies the condition, so review the product description carefully. Used tanks are inspected for structural integrity and leaks before being listed, but you should still perform your own visual inspection upon arrival before installation.

What should I check before installing a replacement fuel tank?

Before installation, inspect the tank for any shipping damage, confirm that all mounting hardware, straps, sending unit openings, and fitting locations match your truck's setup, and verify the tank capacity meets your needs. It's also a good practice to have the tank properly supported and secured during installation and to check for a tight seal at all fittings and the fuel level sending unit before returning the truck to service.

Do these fuel tanks come with mounting straps, sending units, or other hardware included?

This varies by listing, as some tanks are sold as a bare tank only while others may include straps or mounting brackets. Sending units, caps, and additional fittings are often sold separately unless otherwise stated. Read the full product description or reach out to our team before purchasing if you need to confirm exactly what is included so you can plan for any additional parts needed for a complete installation.