Peterbilt 367 Frame Light Bars & Filler Panels

Frequently Asked Questions About Peterbilt 367 Frame Light Bars & Filler Panels

What exactly are frame light bars and filler panels used for on a Peterbilt 367?

Frame light bars are the bracket-mounted light strips that run along the chassis rail between the cab and the rear of the truck, typically holding marker or ID lights. Filler panels are the flat metal or plastic sections that close the gap between the frame rails, cab, and fenders, giving the underside of the truck a finished, streamlined look while covering wiring, hoses, and other components from road debris and view.

Will a frame light bar or filler panel fit my specific Peterbilt 367 without modification?

Fitment depends on your truck's frame rail spacing, wheelbase, and whether it has a factory or aftermarket setup already in place. Most listings specify the frame width or configuration they are designed for, so it's important to measure your rail spacing and compare it to the product specs before ordering. If you're unsure, checking your VIN or reaching out to our support team can help confirm the correct fit for your model year.

What materials and finishes are available, and how do they hold up over time?

These parts are commonly offered in stainless steel, aluminum, or painted/powder-coated steel. Stainless steel options resist corrosion best and are popular for their long-term appearance, especially in states that use road salt. Aluminum is lighter but can show wear differently, while painted or coated panels may require more upkeep to prevent chipping or rust at the edges over time.

Do these light bars come pre-wired or with lights included?

Some frame light bars are sold with LED or incandescent lights and wiring harnesses already installed, while others are bare bars meant for you to add your own lighting components. Always check the product description carefully to see whether lights, sockets, and wiring are included or sold separately, since this affects both the installation process and the total cost of the upgrade.

How difficult is it to install a frame light bar or filler panel myself?

Filler panels generally bolt or clamp into existing frame holes and can often be installed with basic hand tools in a straightforward bracket-to-frame mounting process. Light bars may require a bit more work if wiring needs to be run to your truck's existing light circuit or a new harness needs to be connected. Having your truck's wiring diagram on hand and test-fitting the panel or bar before final tightening can help avoid surprises during installation.