Peterbilt 379 Roof Trim

Frequently Asked Questions About Peterbilt 379 Roof Trim

What exactly is roof trim, and what does it do?

Roof trim refers to the decorative and protective molding or panels that run along the edges and seams of the cab roof on a Peterbilt 379. It covers seams, hides fasteners, and gives the roofline a finished, streamlined look while helping shield the underlying metal from moisture and road debris.

Will this roof trim fit my Peterbilt 379 without modification?

Most roof trim pieces sold for the Peterbilt 379 are designed to match the factory roofline and mounting points for that model. However, cab configuration, sleeper style, and roof height can vary between trucks built in different years, so it is important to check the listed dimensions and compare them to your cab before ordering. If you are unsure, reach out to our team with your truck's specs to confirm fit.

What materials and finishes are available?

Roof trim is commonly available in stainless steel for durability and corrosion resistance, as well as in painted or chrome-finished options to match your cab's existing trim package. Stainless trim typically holds up well to weather exposure, while chrome and painted finishes offer a closer match to factory or custom paint schemes.

How is roof trim installed, and can I do it myself?

Installation generally involves aligning the trim piece along the roof seam or edge and securing it with adhesive, clips, or the factory fastener locations, depending on the specific product. Many customers install roof trim themselves with basic hand tools, but because the work is done at height and requires careful alignment for a clean look, some prefer to have it installed by a body shop or truck accessory shop.

How do I keep roof trim looking good over time?

Regular washing helps prevent buildup of road grime and salt that can dull the finish or lead to corrosion at the edges. For stainless or chrome trim, a dedicated metal polish applied periodically will help maintain shine and protect against pitting. Inspecting the trim occasionally for loose clips or lifted edges can also help you catch and address issues before they lead to water intrusion or trim loss.