Peterbilt 387 Fuel Tank Acc.

Frequently Asked Questions About Peterbilt 387 Fuel Tank Acc.

What types of fuel tank accessories are included in this category?

This category covers components that mount to or support the fuel tank on a Peterbilt 387, including fuel tank straps, brackets, mounting hardware, tank caps, sending unit gaskets, crossmembers, and step or fairing accessories that attach near the tank assembly. These are the parts that hold, seal, and finish out the fuel tank setup rather than the tank itself.

Will these accessories fit my specific fuel tank size and configuration?

Peterbilt 387 trucks were built with different fuel tank diameters and lengths, so strap width, bracket spacing, and mounting hole patterns can vary. Always check the listed tank diameter and measurements against your truck before ordering, and reach out to our parts team with your VIN or tank specs if you are unsure of the fit.

Are these parts made from steel or aluminum, and does it matter?

Fuel tank straps, brackets, and mounting hardware are available in both steel and aluminum depending on the part. Steel components typically offer more strength and are often painted or coated for corrosion resistance, while aluminum parts resist rust naturally and can reduce overall weight. Choose based on your priority between durability and weight savings.

Do I need to drain the fuel tank before installing new straps or brackets?

In most cases you do not need to fully drain the tank to replace straps or brackets, but the tank will need to be securely supported before loosening or removing the old hardware. If you are replacing a cracked or damaged tank support component, it is safest to have the tank empty or near empty to reduce weight and risk during the swap.

How do I know if my fuel tank straps or brackets need to be replaced?

Common signs include visible rust or corrosion, cracks in the strap or bracket, a tank that shifts or rattles while driving, or hardware that no longer tightens securely. If you notice any looseness in the tank mounting or visible wear on the metal, it is a good idea to replace the affected parts before they fail on the road.