Freightliner FLC112 Frame Light Bars-Filler Panels

Frequently Asked Questions About Freightliner FLC112 Frame Light Bars-Filler Panels

What is a frame light bar-filler panel and what does it do?

A frame filler panel is a metal panel that mounts along the frame rail of your FLC112, closing the gap between the cab, fuel tanks, and other frame-mounted components. Many versions include cutouts or mounting holes for marker and turn signal lights, giving the underside of the truck a finished look while also housing lighting that improves visibility from the side of the vehicle.

Will this panel fit my specific FLC112 without modification?

Fitment can vary depending on your truck's wheelbase, fuel tank size and placement, and any aftermarket modifications already made to the frame. Because the FLC112 was built over many years with different frame configurations, we recommend checking the listed dimensions and mounting hole pattern against your truck, or measuring your existing panel if you're replacing a damaged one, before ordering.

What material and finish options are available?

These panels are typically available in stainless steel or aluminized/painted steel. Stainless steel resists corrosion better and holds up well in road salt and weather exposure, while painted or aluminized options are generally a lower-cost alternative. Check each product listing for the specific gauge and finish, since this affects both durability and price.

Do the light cutouts come pre-wired, or do I need to install lights and wiring separately?

In most cases, the panel itself is sold as sheet metal with cutouts or pre-drilled holes for lights, but does not include the lights, sockets, or wiring harness unless the listing specifically states otherwise. You'll want to confirm whether your panel is pre-cut for a specific light size so you can order matching lights separately if needed.

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

Installation is generally straightforward and can be done with basic hand tools, since most panels bolt directly to existing mounting points on the frame rail. That said, you may need to drill new holes if your panel doesn't perfectly match existing holes, and installing any accompanying lights will require basic wiring knowledge. If you're not comfortable with drilling or electrical work, having a shop install it is a reasonable option.