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Discover a variety of Semi-Truck Under Bumper Light Bars at 4 State Trucks, where functionality meets style for your big rig. Our selection features robust stainless steel and aluminum bumper light bars designed for durability and improved visibility. Enhance safety and the look of your truck with our premium under bumper light bars. Shop now for competitive prices, easy installation, and quick shipping from your trusted truck parts provider.

Semi-Truck Under Bumper Light Bars Universal

Add both style and safety to your big rig with our universal under-bumper light bars. Whether you're upgrading for looks, better visibility, or both, this collection is packed with LED bumper bar accessories that deliver form and function.

LED Light Bars That Fit Your Rig

These semi truck bumper bars mount cleanly under your front or rear bumper light panel and are built for durability on the road. Made from stainless steel or aluminum, each light bar is designed to withstand the elements and keep shining mile after mile. Choose from: - Stainless steel light brackets with 1 to 19 LED holes. - Diamond deck plates (24", 36", 48", 60") for a polished, rugged finish. - Multi-LED strip light bars – 6, 9, 12, or 18-light options. - Color choices: amber, red, white, and blue LEDs. Custom bezels and light visors for a tailored look.

Boost Your Truck’s Functionality

These products are designed not just to turn heads, but to add practical value: - Improve vehicle visibility in low-light or foggy conditions. - Help other drivers see your rig clearly on the road or at loading docks. - Add a custom look to the front or rear of your semi truck. - Make it easier to spot hazards and stay safe at night. Whether you're adding a light bar for visibility or just want to customize your truck’s style, we’ve got the options to match your setup and needs, including sleek commercial cab lights and auxiliary marker or clearance lights for your big rig’s visibility.

Built for the Road – and for You

Every item in this collection is made to fit most truck makes and models. That includes Peterbilt, Kenworth, Freightliner, and more. Installation is simple, and the end result is a clean, head-turning upgrade you’ll appreciate every time you start your rig.

Shop Semi-Truck Bumper Light Bars Today

Explore our universal light bar accessories and under-bumper LED bars now. Customize your truck. Increase your visibility. And roll out with confidence—day or night.

Frequently Asked Questions About Semi-Truck Universal Under Bumper Light Bars

Will these universal light bars fit my specific truck make and model?

Universal under bumper light bars are designed to fit most semi-trucks with standard bumper widths ranging from 16 to 20 inches. They typically work with Peterbilt, Kenworth, Freightliner, Volvo, Mack, and International models from 1995 to present. However, you'll need to measure your bumper's mounting area and verify the bracket spacing matches your truck's frame. Most universal bars come with adjustable mounting brackets to accommodate variations between different truck models.

What tools and hardware do I need for installation?

Installation typically requires basic hand tools including a drill with metal bits (usually 3/8" or 1/2"), socket wrenches, wire strippers, and electrical tape. Most light bars come with mounting brackets and bolts, but you may need additional items like wire connectors, a fuse tap or inline fuse holder, and approximately 15-20 feet of 14-16 gauge wire for power connections. Plan for 1-2 hours of installation time, depending on your experience level and whether you're hardwiring or using existing trailer connections.

Are these light bars DOT compliant and legal for highway use?

Most quality universal under bumper light bars are DOT approved when used as auxiliary lighting. Look for bars that specifically state DOT/SAE compliance in their specifications. The lights must not exceed certain brightness levels and should only be used when the vehicle is stopped or moving slowly (under 20 mph) as warning lights. Always check your state's specific regulations, as some states have restrictions on light colors and usage patterns for commercial vehicles.

How durable are these light bars in harsh weather conditions?

Quality universal light bars feature IP67 or IP68 waterproof ratings, meaning they're fully sealed against dust and can withstand heavy rain, snow, and pressure washing. Look for bars with polycarbonate lenses rather than acrylic, as they resist cracking in extreme cold. The housing should be powder-coated aluminum or stainless steel to prevent rust. Most reputable brands offer 1-3 year warranties and are tested to withstand temperatures from -40?F to 185?F.

What's the difference between LED and traditional bulb options?

LED light bars consume 80% less power than traditional incandescent bulbs while producing brighter, more visible light. LEDs typically last 50,000+ hours compared to 1,000-2,000 hours for standard bulbs, eliminating frequent replacements. While LED bars cost more upfront ($75-$300 vs $30-$100 for traditional), they pay for themselves through energy savings and longevity. LEDs also work better in cold weather and turn on instantly without warm-up time.


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