Semi-Truck LED & Halogen Headlights
Upgrade Your Rig with the Best Headlight Features
Browse durable, road-ready options, including:- LED headlights with integrated daytime running lights, turn signals, and halo rings for bold, modern visibility.
- Halogen headlights with amber markers that offer a traditional look and easy bulb replacement.
- Projector headlights that deliver sharp, focused beams for long-distance visibility.
- Stainless steel and chrome-finish housings to match your truckâs grille or trim.
- DOT-approved options from trusted brands like Truck-Lite and United Pacific.
Why Replace Your Factory Headlights?
Factory headlights fade, fog up, and dim over time. New aftermarket LED headlights last longer, shine brighter and give your truck a serious visibility boostâespecially in poor weather or dark rural highways. Whether you want a factory match or a custom headlight housing with attitude, weâve got what you need. Pair headlights with other products like clearance lights for commercial trucks or general truck lighting upgrades. Or beat pesky blindspots with a set of polished semi truck mirrors.What Are the Main Types of Headlights?
When shopping for semi truck headlights, there are three primary types to know: - Halogen: Affordable and widely available. These use a tungsten filament and halogen gas to produce light. - HID (High-Intensity Discharge): Brighter than halogens with a bluish tint. They use gas rather than a filament and require ballasts. - LED (Light Emitting Diode): The most efficient and durable. LEDs offer a lot more brightness, consume less power, and last up to 20x longer than halogens.Which is betterâHID or Halogen?
HID lights are brighter and can last longer than halogens. LEDs are the industry standard, offering a longer lifespan, less heat, and more brightness.What Does Adaptive Headlight Mean?
Adaptive headlights are a high-tech upgrade designed to move with your steering. As you turn, the beam follows the direction of the roadâgiving you better visibility around corners. Some advanced LED models also adjust brightness based on speed or surrounding light conditions.Built Tough for the Road Ahead
Every headlight we sell is built to handle real-world trucking:Find the Right Fit!
We carry direct-fit options for: - Peterbilt 379, 389, 579- Kenworth T680, W900
- Freightliner Cascadia, Classic
- International and Volvo models
- And universal housing options for custom builds Whether you're after classic halogen charm or cutting-edge LED lighting upgrades, you'll find the perfect set of semi-truck headlights here.
Shop with Confidence at 4 State Trucks
Your rigâs lighting isnât something to cut corners on. Trust our experienced customer support team, quick delivery, and top-tier brands to help you find the right headlights at the right price. Explore our full selection now and upgrade your truckâs safety, visibility, and custom lookâday or night.Frequently Asked Questions About Semi-Truck LED & Halogen Headlights
Will these headlights fit my specific truck model and year?
Most semi-truck headlights come in standard sizes: 7-inch round (commonly fits Peterbilt 379, Kenworth W900, and older models) and 4x6 or 5x7 rectangular (fits Freightliner, International, Volvo, and newer models). Always verify your existing headlight dimensions before ordering. If you're unsure, remove one headlight and measure the housing diameter or rectangle dimensions. Our product descriptions include specific fitment details, but you can also contact our support team with your truck's year, make, and model for confirmation.
What's the real difference between LED and halogen, and is LED worth the extra cost?
LED headlights typically last 30,000-50,000 hours compared to 500-1,000 hours for halogens, meaning you'll replace halogens 30-50 times before an LED fails. LEDs produce 2-3 times more light output while using 80% less power, reducing strain on your electrical system. The upfront cost is higher (usually $100-300 per LED vs $20-50 per halogen), but most drivers break even within 12-18 months due to reduced replacement costs and fuel savings from lower alternator load. LEDs also provide instant full brightness and better visibility in rain and fog.
How difficult is installation, and what tools or modifications are needed?
Most headlight replacements are plug-and-play and take 15-30 minutes per light. You'll need basic tools: screwdrivers, socket set, and possibly trim removal tools. Halogen-to-halogen swaps are always direct replacements. When upgrading from halogen to LED, some trucks require anti-flicker harnesses or load resistors to prevent dash warning lights or rapid blinking. Sealed beam to LED conversions may need new mounting rings. Always disconnect the battery before installation to prevent electrical damage.
Why do some LED headlights cause interference with my radio or CB?
Cheap LED headlights often lack proper EMI (electromagnetic interference) shielding, causing static on AM/FM radios and CB channels. Quality LEDs include built-in EMI filters and shielding to prevent this issue. Look for headlights that specifically mention FCC compliance or EMI/RFI suppression. If you experience interference after installation, adding ferrite cores to the power wires or upgrading to better-shielded headlights usually solves the problem. Avoid bottom-tier LED brands that don't address EMI in their design.
What beam pattern should I choose, and are these DOT legal?
For on-road use, always choose DOT-approved headlights with proper beam patterns. Low beams should have a clear horizontal cutoff line to prevent blinding oncoming traffic. High beams should project further without the cutoff. Many cheap LEDs scatter light everywhere, which is illegal and dangerous. DOT-approved lights will have "DOT" stamped on the lens. Some states have additional requirements for headlight color temperature (usually 3000K-6000K is acceptable). Off-road or private property use allows more flexibility with beam patterns and brightness.
