Buy Direct-Fit Peterbilt 379 Cowl Extensions & Sleeper Panels
Our lineup of Peterbilt 379 cab and
sleeper panels dramatically adds to your truck’s overall aesthetic appeal.
Whether you're swapping out scuffed trim, or you want a custom stainless steel look to accentuate your exterior sleeper-cab profile, and pair with your
Peterbilt battery box cover, we offer a wide selection of aftermarket cab-cowl options to fit your Peterbilt.
You can shop by material, including:
- Aluminum (lightweight and corrosion-resistant).
- stainless steel (for that polished, durable finish).
- Composite (lightweight and cost-effective).
Personalize Your Truck with Peterbilt 379 Cowl Panels
Choose panels with built-in lighting options like bullseye lights, slotted light cutouts, or integrated LEDs. Pair them with light brackets for sleeper panels to really make your truck stand out day or night.
We stock a wide array of product options:
- Wide cowl panels for extra coverage and additional integrated LED lighting for more style.
- Extender panels and filler plates for a smooth, seamless look.
- Standard wrap sleeper panels for that factory-tight finish.
- Blank cab panels you can build your own style around.
- Peterbilt 379 cab replacement panels if you're dealing with rust, dents, or just want something new.
These aftermarket cab panels are built to fit right, complement your
door cab siding accessories, install easy, and last for the long haul.
Ready to
convert your Peterbilt 379 cab? Filter by style, material, or sale price, and find the setup that works for your truck and your budget.
Frequently Asked Questions About Peterbilt 379 Cab, Sleeper & Cowl Panels
Will these cab, sleeper, and cowl panels fit my Peterbilt 379 without modification?
Most panels in this category are designed to match the factory dimensions and mounting points of the Peterbilt 379, but production years and cab configurations can vary. It's important to check the specific year range and cab style (day cab or sleeper) listed on each product page, and compare it against your truck's specs before ordering. If you're unsure, reach out to our team with your VIN or truck details and we can help confirm fit.
What materials are these panels made from, and how do they hold up over time?
Panels are typically offered in steel or fiberglass, depending on the specific part. Steel panels tend to offer more rigidity and are often chosen for structural cab and cowl sections, while fiberglass options are common for sleeper panels where weight savings matter. Each product listing specifies the material used, so you can choose based on your durability needs and how the truck is used on the road.
Do these panels come pre-painted, or will I need to paint them myself?
Most cab, sleeper, and cowl panels are sold unpainted or in primer to allow for a color match to your specific truck. This gives you flexibility in finishing but does mean you should plan for paint and bodywork after installation. Check the individual product description, as some panels may be available with a finished coating.
How difficult is it to install a replacement panel, and can I do it myself?
Installation difficulty depends on the specific panel and its location on the cab or sleeper. Some panels are bolt-on replacements that an experienced DIYer with basic tools can handle, while others involve more extensive bodywork, welding, or alignment work that's better suited for a professional shop. We recommend reviewing any installation notes on the product page and having a clear sense of your own mechanical experience before starting the job.
Are these panels made for repairing collision damage or general wear and rust?
These panels are commonly used for both purposes. Customers often order them to replace sections damaged in an accident or to address rust and corrosion that develops over years of use, especially on sleeper and lower cowl areas that are more exposed to road debris and moisture. If you're replacing a damaged section, it's a good idea to inspect surrounding areas for hidden rust or structural issues before installing a new panel.
