Peterbilt 387 Fuel Tank Brackets & Straps

Frequently Asked Questions About Peterbilt 387 Fuel Tank Brackets & Straps

What do fuel tank brackets and straps actually do?

Fuel tank brackets and straps are the mounting hardware that secures the fuel tank to the frame rails of your Peterbilt 387. The brackets attach to the frame and support the tank's weight, while the straps wrap around the tank to hold it firmly in place and prevent shifting, vibration, or movement while the truck is in motion.

How do I know if a bracket or strap will fit my Peterbilt 387?

Fit depends on your specific fuel tank size and diameter, as well as the frame configuration on your truck. Before ordering, check the tank diameter and confirm the bracket or strap dimensions listed on the product page match your setup. If you're unsure, it helps to have your tank's measurements on hand or reference your original equipment part number when comparing options.

What materials are these brackets and straps made from, and how well do they hold up?

Most fuel tank brackets are made from steel for strength and durability, and many straps are available in either steel or aluminum. Steel components are often coated or painted to resist rust and corrosion, but because these parts are mounted low on the frame and exposed to road debris, moisture, and de-icing chemicals, some wear over time is normal. Choosing a coated or powder-coated option can help extend service life in harsh conditions.

How do I know when it's time to replace my fuel tank brackets or straps?

Common signs include visible rust or corrosion weakening the metal, cracks or bends in the bracket, worn or stripped mounting holes, or a strap that no longer holds the tank tightly against the frame. If you notice the fuel tank shifting, rattling, or sagging while driving, it's a strong indication that the brackets or straps need to be inspected and likely replaced.

Are these brackets and straps straightforward to install myself?

Installation is generally manageable for someone comfortable with basic mechanical work and common hand tools, since the process mainly involves removing the old hardware and bolting on the new brackets or straps. That said, the fuel tank is heavy, so it's important to properly support it during removal and installation to avoid injury or damage. If you're not confident working under the truck with a supported tank, having a qualified technician handle the job is a safer option.