Upgrade Your 4″x6″ Headlights to LED
If you’re running outdated sealed beam headlights, this ULTRALIT LED upgrade offers improved visibility, longer lifespan, and better durability. Designed for 4″x6″ applications, these headlights provide a cleaner, whiter light output closer to daylight.
Perfect for trucks, older vehicles, and fleet applications needing reliable lighting performance.
Available in Low Beam & High Beam Options
These headlights are sold as separate low and high beam units.
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Low Beam Output: 400 lumens
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High Beam Output: 550 lumens
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Choose the correct beam type based on your vehicle setup
LED Performance & Efficiency
Designed for consistent LED output and efficiency.
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Low power draw compared to halogen
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Instant-on LED performance
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Clean, white light output
Built for Harsh Conditions
Engineered for durability in demanding environments.
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Die-cast aluminum housing
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Solid-state design resists shock and vibration
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Polycarbonate lens for impact resistance
12–24V Compatibility
Designed to work across a wide range of vehicle systems.
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Compatible with 12V and 24V systems
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Ideal for heavy-duty trucks and equipment
Plug-and-Play Style Installation
Designed for straightforward installation in standard 4″x6″ headlight housings.
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Fits standard 4″x6″ headlight applications
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Connects to existing wiring harness
Note: A load resistor may be required depending on your vehicle setup (Item #34205).
Compliance & Fitment
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Standard 4″x6″ headlight size
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Low beam and high beam units sold separately
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DOT / SAE compliant (FMVSS 108)
What’s Included
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(1) ULTRALIT LED Headlight (Low OR High Beam – based on selection)
Frequently Asked Questions About 4×6 LED Headlights
Are these headlights sold as a pair?
No. Low beam and high beam units are sold separately. Be sure to select the correct option for your setup.
What vehicles use 4″x6″ headlights?
4″x6″ headlights are commonly used on older trucks, semi-trucks, and various heavy-duty or vocational vehicles.
Are these brighter than halogen sealed beams?
These provide a whiter and more consistent light output compared to traditional halogen sealed beams.
Do these work on both 12V and 24V systems?
Yes, these headlights are designed for both 12V and 24V applications.
Do I need a load resistor?
A load resistor may be required depending on your vehicle’s electrical system. Compatible option: Item #34205.
Are these plug-and-play?
They are designed to connect to your existing wiring harness for straightforward installation. Some variation may occur depending on setup.
What is the difference between low beam and high beam?
Low beam is designed for normal driving conditions, while high beam provides increased distance visibility for dark roads.
Are these good for fleet vehicles?
Yes. The durable construction and vibration resistance make them ideal for heavy-duty and fleet applications.
Do these resist moisture and damage?
Yes. The aluminum housing and polycarbonate lens are designed to protect against environmental conditions and road debris.
