Peterbilt 388 Fuel Tank Fairings

Frequently Asked Questions About Peterbilt 388 Fuel Tank Fairings

What are fuel tank fairings and what do they do?

Fuel tank fairings are the panels that fit between and around the fuel tanks on your Peterbilt 388, closing the gap between the tanks and smoothing out the airflow along the side of the truck. Beyond the aerodynamic benefit, they also give the underside of the cab a cleaner, more finished look and help shield the tanks and lines from road debris.

Will these fairings fit my specific Peterbilt 388 configuration?

Fit depends on your truck's tank size, spacing, and mounting setup, which can vary between trucks even within the same model. Before ordering, measure the gap between your tanks and check the mounting points against the product specifications listed for each fairing. If you're not sure which option matches your setup, reach out to our team with your tank dimensions and we can help confirm compatibility.

What materials are these fairings made from, and how do they hold up?

Fuel tank fairings are typically made from aluminum or durable poly/composite materials, depending on the specific product. Aluminum options tend to offer a more rigid, long-lasting build and can be polished or painted to match your truck, while poly options offer a lighter-weight, corrosion-resistant alternative. Either way, these panels are built to handle continuous exposure to road spray, debris, and weather.

Do these fairings come finished, or will I need to paint or polish them?

This varies by product. Some fairings are available in a raw or brushed finish that you can paint or polish to match your truck, while others come pre-finished or in a diamond-plate pattern. Check the individual product listing for finish details, and if you plan to paint a raw panel, a light surface prep will help the paint adhere properly.

How difficult is it to install fuel tank fairings myself?

Most fuel tank fairings are designed to bolt into existing mounting points or brackets on the tanks and frame, so many owners are able to install them with common hand tools. That said, exact install steps can differ depending on the fairing style and your truck's tank setup, so it helps to review the included instructions or reach out to us with questions before you start.