Freightliner M2 Business Class Diesel Fuel Tanks

Frequently Asked Questions About Freightliner M2 Business Class Diesel Fuel Tanks

Will this fuel tank fit my Freightliner M2 Business Class truck?

Fuel tanks for the M2 Business Class come in a variety of capacities, diameters, and mounting configurations depending on the model year and chassis setup. Before ordering, check the tank's diameter, length, and strap mounting dimensions against your existing tank, and confirm the capacity matches your truck's fuel system requirements. If you are unsure, reach out to our team with your VIN or existing tank measurements and we can help confirm fitment.

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

Diesel fuel tanks for the M2 are typically available in aluminum or steel. Aluminum tanks are lighter and naturally resistant to rust, while steel tanks tend to be more affordable and rugged but require finish maintenance to prevent corrosion over time. Your choice often comes down to weight considerations, budget, and how the truck is used.

How do I know what fuel capacity I need?

Fuel tank capacity is usually measured in gallons and should match or complement your existing tank setup, especially if your truck runs dual tanks. Consider your typical routes, fuel stops, and payload requirements when choosing a larger or smaller capacity. If you are replacing a factory tank, matching the original capacity is the safest choice unless you have a specific reason to upsize or downsize.

What is involved in installing a replacement fuel tank?

Installation generally involves draining and disconnecting the old tank, removing the mounting straps and fuel lines, then mounting the new tank and reconnecting fuel lines, vent lines, and sending unit wiring. This is a job that requires proper fuel system safety precautions, so many customers choose to have installation done by a qualified technician rather than attempting it themselves.

Do these tanks include the sending unit, straps, and other mounting hardware?

This varies by product listing. Some tanks are sold as a bare tank only, while others may include mounting straps or sending unit provisions. Always check the product description carefully to see exactly what is included, and confirm whether you will need to reuse your existing sending unit, straps, or fuel lines from your old tank.