Shop Semi-Truck Marker Clearance Lights

Discover exceptional LED marker and clearance lights at 4 State Trucks to ensure your semi-truck or trailer stands out and stays within DOT and NSC guidelines. From cab to roof, find lights in amber, red, and RGB to match your style with specialty lenses and unique patterns. Shop leading brands like Grote and Maxxima for quality parts and receive expert customer support for a winning setup. Illuminate your rig'safety and style go hand-in-hand at 4 State Trucks. Contact us or buy online now.

Semi-Truck Marker Clearance Lights Universal

When you're hauling heavy on highways day or night, marker lights for semi trucks aren’t just about looks — they’re essential for visibility, safety, and DOT compliance. Whether you're upgrading your ride, or replacing worn-out lights, our in-stock selection of lights offers easy-to-mount DOT-compliant illumination on your fender, cab, or sleeper. Explore our wide selection of LED clearance lights for trucks — available in round, oval, rectangular, and bullet styles — all designed to fit a variety of makes and models. Compatible with various models, you can choose white, amber, blue, green, red, or purple light color options along with sequential turn signals or dual revolution features.

Why LED Marker Lights Are a Smart Choice for Semi Trucks

Tired of replacing burned-out bulbs or dealing with dim lighting? Modern LED clearance lights for trucks offer: Longer lifespan — LEDs outlast traditional bulbs by thousands of hours. Low power draw — Save battery life and reduce strain on your electrical system. Improved visibility — Crisp, bright output cuts through fog, rain, and night driving. Sleek style options — Choose amber, red, or clear lenses to match your truck’s look. Whether you’re shopping for semi-trailer clearance lights or marker lights for the cab, fenders, or roofline, we’ve got everything you need to light up your ride.

Top Features and Benefits

Every clearance light in this category is tested tough. Most include features like: - Waterproof and weather-resistant housings. - Easy surface or flush mount installations. - Standard two-wire hookups or grommet plug-in options. - DOT and SAE compliance where required. Want something subtle? Go low-profile. Need bold visibility? Opt for strobe or high-intensity LED marker lights.

What’s the Difference Between Clearance Lights vs Marker Lights?

Not sure what’s what? Here’s a quick breakdown: Clearance lights mark the outer edges of your semi truck or trailer’s height and width, alerting other drivers to your vehicle’s size. Marker lights highlight the presence and shape of your vehicle, especially from the side. While they serve slightly different roles, both are required — and both can be upgraded to brighter, longer-lasting LEDs for better visibility and durability. We also offer universal semi-truck lighting fixtures, including commercial driving lights and fog lights.

Shop Online for the Best Marker Lights for Semi Trucks at 4 State

From old-school classics to sleek modern LEDs, 4 State Trucks is your one-stop shop for clearance and marker lights for commercial trucks. With competitive prices, fast shipping, and a massive inventory of truck and trailer lighting, you’ll find what you need to upgrade or maintain your rig.

Frequently Asked Questions About Semi-Truck Marker Clearance Lights Universal

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

Universal marker clearance lights are designed to fit most semi-trucks regardless of make, model, or year. They typically mount using standard 2-wire connections and fit into common mounting hole sizes (usually 3/4" or 2" diameter). However, you should verify your truck's mounting hole dimensions before ordering. Most universal lights work with 12V and 24V systems, making them compatible with virtually all commercial trucks including Peterbilt, Kenworth, Freightliner, Volvo, Mack, and International models from the 1980s to present.

What's the difference between LED and incandescent marker lights, and which should I choose?

LED marker lights last 50,000+ hours compared to 2,000-5,000 hours for incandescent bulbs, draw significantly less power (reducing alternator strain), and resist vibration damage better. While LEDs cost more upfront ($8-20 per light vs $3-8 for incandescent), they eliminate frequent bulb replacements and reduce downtime. LEDs also provide instant-on illumination and work better in extreme temperatures. Choose incandescent only if you need the lowest initial cost or have an older electrical system that requires the higher amp draw to function properly.

How difficult is the installation process, and what tools do I need?

Installation typically takes 15-30 minutes per light for someone with basic electrical knowledge. You'll need wire strippers, crimping tools, butt connectors or heat shrink terminals, electrical tape, and a drill with appropriate bits if adding new mounting holes. Most universal lights include pigtail wires that connect to your existing harness. The main challenges are accessing tight spaces behind panels and ensuring waterproof connections. Apply dielectric grease to connections and use heat shrink tubing to prevent corrosion, especially in areas exposed to road salt.

Are these lights DOT approved and will they pass inspection?

Quality universal marker lights sold by reputable suppliers are DOT approved and meet FMVSS 108 requirements. Look for lights with "DOT" stamped on the lens along with SAE ratings (P2, P3, or PC for clearance and side marker functions). These certifications ensure the lights meet federal brightness, visibility angle, and color standards. Amber lights are required on the front and side, red on the rear. Keep your purchase receipts and verify DOT markings are visible after installation to avoid inspection issues.

How long do these lights typically last, and what causes premature failure?

LED marker lights typically last 5-10 years in normal use, while incandescent versions need bulb replacements every 6-18 months. The most common failure points are corroded connections (responsible for 60% of failures), water intrusion through cracked lenses or failed gaskets, and vibration damage to internal components. To maximize lifespan, ensure proper grounding, use sealed connectors, check and replace weathered rubber gaskets annually, and apply a thin layer of silicone sealant around the lens edge during installation. Avoid over-tightening mounting screws which can crack plastic housings.