Frequently Asked Questions About Peterbilt 375/377 Frame Light Bars & Filler Panels

What years and models are these frame light bars compatible with?

Our frame light bars and filler panels are designed specifically for Peterbilt 375 and 377 models manufactured between 1987 and 2000. However, compatibility can vary based on your truck's specific configuration, especially if modifications have been made to the frame or bumper area. We recommend checking your frame rail measurements before ordering, as some custom chassis configurations may require different mounting solutions.

Are these light bars made from stainless steel or chrome-plated steel?

We offer both options depending on the specific product. Our premium line features 304-grade stainless steel construction with a mirror polish finish that resists rust and corrosion without requiring replating. Our standard line uses heavy-gauge steel with triple chrome plating. The stainless options typically cost 30-40% more but provide superior longevity, especially in harsh weather conditions or areas where road salt is used.

Do I need to drill holes in my frame to install these light bars?

Most of our frame light bars are designed to use existing frame holes and mounting points on your Peterbilt 375/377. However, some configurations may require drilling 1-2 additional holes per side for proper alignment. Each product includes detailed installation instructions specifying whether drilling is required. We recommend having the installation done by a professional if you're not comfortable working with frame modifications.

What's the difference between flush-mount and standard filler panels?

Flush-mount filler panels sit even with your bumper surface for a seamless, integrated appearance, while standard panels have a slight raised profile (typically 1/4 to 1/2 inch). Flush-mount panels require more precise installation but provide a cleaner look. Standard panels are more forgiving during installation and often preferred by drivers who want the classic Peterbilt appearance with visible panel edges.

Can I mount additional lights on these light bars, and what's the weight capacity?

Yes, our frame light bars are engineered to support additional auxiliary lighting. Most models can safely handle 15-20 pounds of additional lights per side when properly mounted. The bars come pre-drilled with standard light mounting patterns, and many include reinforced mounting points for popular aftermarket LED and halogen light brands. Always ensure your total light setup doesn't exceed your state's legal requirements for auxiliary lighting.