Frequently Asked Questions About Peterbilt 387 Frame Light Bars & Filler Panels

Will these light bars and filler panels fit my specific year Peterbilt 387?

Most frame light bars and filler panels are designed to fit Peterbilt 387 models from 2000-2010. However, there can be slight variations between early and late production years. We recommend checking your VIN or contacting us with your truck's specific year and any modifications to ensure proper fitment. Custom exhaust configurations or aftermarket bumpers may require different mounting solutions.

What material options are available, and which holds up best against rust and road chemicals?

Frame light bars and filler panels typically come in 304 stainless steel, chrome-plated steel, or powder-coated steel. For maximum durability, 304 stainless steel offers the best resistance to rust and road salt, though it comes at a higher price point. Chrome-plated options provide a mirror finish but require regular maintenance to prevent pitting. Powder-coated steel offers good protection at a lower cost but may chip over time from road debris.

Do I need to drill new holes or modify my frame for installation?

Most quality light bars and filler panels are designed to use existing frame holes and mounting points on the Peterbilt 387. Standard installations typically take 1-2 hours and require basic hand tools. However, adding auxiliary lights or custom configurations may require drilling. Always verify that your frame rails haven't been modified from previous installations, as this could affect mounting compatibility.

Can I install LED lights in these light bars, or do I need specific bulb types?

Most frame light bars accept standard 4-inch round lights, which means you can use either traditional incandescent bulbs or upgrade to LED options. LED lights are recommended for their longevity and lower power draw. When switching to LEDs, ensure your truck's electrical system is compatible, as some older models may require LED-specific flashers or load resistors for proper turn signal operation.

What's the difference between light bars with filler panels versus standalone options?

Light bars with integrated filler panels provide a cleaner, more finished appearance by closing gaps between the bumper and frame rails. Standalone light bars are typically less expensive and easier to install but may leave visible spaces. Filler panels also help protect the frame area from road spray and debris. Your choice depends on whether you prioritize the complete, professional look or prefer the simplicity and cost savings of light bars alone.