Shop Semi-Truck Cab Lights

Keep your truck looking stylish and safe with our premium selection of semi-truck cab lights. Our LED truck cab lights not only add a touch of flair to your rig but also provide essential visibility for your vehicle's height, making it a breeze to navigate loading stations. At 4 State Trucks we offer a diverse range of cab light kits, including top brands. Whether you're replacing old lights or customizing your truck with LED roof lights, we've got you covered with durable housings and vibrant accents. Rest easy knowing that all our cab lights come with clear warranty information and the added assurance of expert support from our team. Upgrade your truck's illumination today with our top-notch cab lights. Shop now for the best deals and unbeatable customer service.

Semi-Truck Cab Lights Universal

Your rig’s cab lights do more than just glow. They boost your visibility, show off your truck’s style, and help you stay road legal—day or night, rain or shine. Upgrading to aftermarket semi truck cab lights is one of the easiest ways to make your truck stand out and shine brighter on the highway. Whether you want a bold custom look or reliable lighting that lasts, we’ve got the right setup for your rig.

Why Upgrade Your Cab Marker Lights?

Here’s why drivers across the country are switching to premium aftermarket options: Better visibility on the road – Improve your truck’s visibility for other drivers, especially in bad weather. Safer night driving – Brighter lights make your cab more noticeable after dark. LED cab lights last longer – Lower power draw and a much longer lifespan than traditional bulbs. Custom style – Pick a light that matches your vibe, whether it's classic, modern, or wild. Quick, simple upgrade – Most options install easily on Freightliner, Kenworth, Peterbilt, International, and other top makes.

Cab Light Styles for Every Rig

Your cab lights should match your truck’s look. That’s why we carry a wide range of shapes and styles: Grakon cab lights – Sleek and low-profile, popular on newer trucks. Watermelon lights – A vintage favorite with a domed lens. Beehive and bullet styles – Great for custom builds and throwback looks. Square, round, and rectangular lights – Fit your roof or panel layout with ease. You can choose from amber, red, white/clear, or smoked lenses—whatever suits your truck’s paint job and aesthetic. Want your sleeper panel lights to match your roof lights? We’ve got you covered.

Built for Visibility and Durability

Aftermarket truck cab lights, just like our semi truck driving lights, are made to handle the road. Rain, snow, dust, or heat—they’ll keep shining. Whether you're hauling coast to coast or just need a solid upgrade, these lights are built to last. And with LED options, you’ll spend less time replacing bulbs and more time driving. Most of our semi truck cab lights are made for universal fitment. That means they work with just about any Class 8 truck—Freightliner, Kenworth, Peterbilt, Western Star, and more. We’ve got bolt-on, plug-in, and surface-mount designs to make installation a breeze.

Light Up the Road Ahead

Transform the look and feel of your rig with all-purpose marker/cab lights that fit your model/make. We’ll help you find the perfect setup to elevate your truck’s look. And if you’re upgrading your lights, consider installing a new blind-mount drop visor and semi truck mirror bracket set while it’s in the shop.

Frequently Asked Questions About Semi-Truck Cab Lights Universal

Will these universal cab lights fit my specific truck model and year?

Universal cab lights are designed to fit most semi-truck models including Peterbilt, Kenworth, Freightliner, Mack, Volvo, and International trucks from the 1980s to present. However, fit depends on your cab style and existing mounting points. Flat-top cabs typically require drilling new holes, while some factory-drilled cabs may have pre-existing mounting locations. We recommend measuring your cab width and checking for existing mounting holes before ordering. Most universal kits include adjustable mounting brackets to accommodate cab widths from 70 to 80 inches.

What tools and skills do I need for installation?

Installing universal cab lights requires basic to intermediate mechanical skills. You'll need a drill with metal bits (typically 3/8" and 1/2"), a center punch, masking tape, measuring tape, wire strippers, and electrical connectors. The most challenging part is drilling through the cab roof, which requires careful measurement and steady hands. Plan for 2-4 hours of installation time. Many customers recommend using a template or having a professional install them if you're not comfortable drilling into your cab. Wiring typically connects to your existing clearance light circuit or a dedicated switch.

Are LED or incandescent bulbs better for cab lights?

LED cab lights are the preferred choice for most drivers today. They last 50,000+ hours compared to 2,000 hours for incandescent bulbs, draw less power (reducing alternator strain), and provide brighter, more consistent light output. LEDs also generate less heat, preventing lens warping and discoloration. While LED units cost more upfront, you'll save money long-term on replacements and fuel efficiency. Incandescent lights are still available for those wanting a traditional look or working with older electrical systems, but they require more frequent bulb changes.

What's the difference between smoked, clear, and amber lenses?

Lens color affects both appearance and visibility. Amber lenses are DOT-required for front-facing marker lights and provide the best visibility in fog and adverse weather. Clear lenses offer maximum light output and a clean, modern look when paired with amber LEDs. Smoked lenses create a sleek, custom appearance but reduce light output by 20-40%, which may not meet DOT requirements in some states. Many drivers choose amber for the front three lights (for compliance) and clear or smoked for the rear two lights. Check your state's specific regulations before choosing lens colors.

How do I prevent water leaks after installation?

Proper sealing is critical to prevent cab leaks. Use high-quality butyl tape or silicone sealant specifically designed for automotive applications around each mounting hole. Apply sealant to both the top and bottom of mounting points, and ensure the included rubber gaskets are properly seated. Many installers recommend adding a bead of clear silicone around the entire base of each light after installation. Avoid over-tightening mounting screws, which can crack lenses or distort gaskets. Check and reseal lights annually as part of regular maintenance, especially if you notice any condensation inside the lenses.