Peterbilt 375/377 Diesel Fuel Tanks

Frequently Asked Questions About Peterbilt 375/377 Diesel Fuel Tanks

Will a replacement fuel tank fit my Peterbilt 375 or 377 without modification?

Fuel tanks for these models are typically designed to match factory mounting points and strap locations, but fitment can vary depending on the tank's capacity, shape, and the specific year or configuration of your truck. Always check the listed dimensions, mounting bracket spacing, and neck/outlet placement against your current tank before ordering to confirm a proper fit.

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

Diesel fuel tanks for the 375/377 are commonly available in aluminum or steel. Aluminum tanks tend to resist corrosion better and are lighter, which can help with overall vehicle weight, while steel tanks are often valued for their strength and durability under harsh conditions. The right choice usually depends on your operating environment and how much weight savings matters for your application.

What size and shape options are available, and how do I know which one I need?

Tanks typically come in a range of capacities and shapes, such as round, D-shaped, or rectangular, to match different chassis setups and fuel needs. Measuring your existing tank's length, diameter, and strap width, along with confirming your desired gallon capacity, will help narrow down the correct replacement option.

Are these tanks sold with the necessary hardware, like straps and mounting brackets?

This varies by listing, so it's important to check the product description carefully. Some tanks are sold as the tank only, while others may include straps, brackets, or mounting hardware. If your current hardware is worn or damaged, you may need to order these components separately.

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

While some experienced truck owners handle fuel tank replacement themselves, the process involves properly securing the tank, connecting fuel lines and sending units, and ensuring there are no leaks before returning the truck to service. Given the safety considerations around fuel system work, many owners choose to have the installation performed by a qualified technician.