Peterbilt 386 Fuel Tank Fairings

Frequently Asked Questions About Peterbilt 386 Fuel Tank Fairings

What are fuel tank fairings and what do they do?

Fuel tank fairings are the panels that cover the area between the fuel tanks and the frame rails on your Peterbilt 386. They give the truck a cleaner, finished look by hiding the frame, wiring, and hoses in that section, and many drivers also like the slight aerodynamic benefit they can provide on the highway.

Will these fairings fit my Peterbilt 386 without modification?

Fairings in this category are designed to match the factory tank spacing and mounting points used on the Peterbilt 386, so they typically bolt up using existing holes or factory-style brackets. That said, tank size, spacing, and any prior aftermarket modifications on your specific truck can affect fit, so it is a good idea to double check dimensions and mounting hardware requirements before ordering.

What materials and finish options are available?

You will commonly find these fairings offered in aluminum or stainless steel. Aluminum tends to be lighter and more budget-friendly, while stainless steel offers added durability and a brighter, more polished look. Finish options usually range from a brushed or polished stainless finish to plain or treated aluminum, so you can match the fairings to the rest of your truck's trim.

Are these fairings straightforward to install myself?

Most fuel tank fairings are designed for a bolt-on installation using the existing mounting brackets or hardware included with the kit. Basic hand tools are usually all that is needed. If your truck has non-standard tank brackets or aftermarket tanks, you may need to make minor adjustments, so having a helper and checking hardware fit before final installation is recommended.

How do I keep my fairings looking good and free of rust or corrosion?

Regular washing helps remove road salt, brake dust, and grime that can lead to corrosion over time, especially around seams and mounting points. Stainless fairings generally hold up well with routine cleaning and occasional polishing, while aluminum fairings benefit from a protective wax or sealant to help maintain their finish and resist oxidation.