Vehicle Compatibility

The CO LIGHT 4×6 LED headlights are designed as replacements for common sealed-beam applications including:

Headlight Replacements

• H4651
• H4652
• H4656
• H4666
• H6545

Common Compatible Vehicles

Kenworth

• Kenworth T400
• Kenworth T600
• Kenworth T800

Peterbilt

• Peterbilt 357
• Peterbilt 378
• Peterbilt 379

Chevrolet & GMC

• K5 Blazer
• K10
• K20
• K30
• Silverado
• Suburban
• C70
• C4500
• P40
• P60
• W3500
• W4500
• W5500

Additional Applications

Many classic trucks, commercial vehicles, medium-duty trucks, and square-headlight platforms utilizing 4×6 sealed beam headlights.

Four Lighting Functions

High Beam

Produces up to 8,000 lumens for maximum nighttime visibility.

Low Beam

Provides approximately 5,000 lumens of focused roadway illumination.

White Daytime Running Light

Integrated DRL lighting helps improve daytime visibility while giving the vehicle a modern appearance.

Amber Turn Signal

Built-in amber lighting increases signal visibility while adding a premium custom look.

Advanced LED Technology

Unlike traditional halogen sealed beams, these headlights utilize modern LED chips engineered for maximum output and efficiency.

Key Specifications

• 80-Watt Output
• 6000K Color Temperature
• 8,000 Lumens High Beam
• 5,000 Lumens Low Beam

Benefits include:

• Brighter roads
• Better obstacle detection
• Enhanced sign visibility
• Reduced driver fatigue

Sharp Cut-Off Beam Pattern

One common complaint with low-quality LED headlights is excessive glare.

CO LIGHT addresses this issue with projector optics designed to provide:

• Controlled beam patterns
• Sharp cutoff lines
• Reduced glare
• Improved road safety

The result is better visibility for you without blinding oncoming drivers.

Built for Commercial Use

Waterproof Housing

The aluminum housing helps prevent:

• Water intrusion
• Moisture buildup
• Lens contamination
• Premature component failure

Advanced Cooling System

Integrated cooling technology helps:

• Reduce operating temperatures
• Improve LED efficiency
• Extend lifespan
• Maintain consistent output

50,000-Hour Service Life

The extended lifespan makes these headlights particularly attractive for:

• Fleet operators
• Commercial truck drivers
• Work trucks
• Daily drivers

Plug-and-Play Installation

Installation is straightforward thanks to standard H4 connectors.

Wiring Functions

• Main H4 Connector
• Red Wire for DRL Function
• Yellow Wire for Amber Turn Signal Function

Some vehicles may require an H4 harness adapter depending on factory wiring configuration.

Why Upgrade Factory 4×6 Headlights?

Original sealed-beam headlights often suffer from:

• Weak output
• Yellow light color
• Poor visibility
• Outdated technology

LED upgrades provide:

• Greater brightness
• Better reliability
• Lower power consumption
• Modern styling

For drivers who regularly travel at night, the difference is immediately noticeable.

Ideal Applications

These headlights are especially popular among:

• Semi-truck owners
• Square-body truck restorations
• Classic SUV builds
• Fleet vehicles
• Work trucks
• Off-road projects
• Restomod builds

Final Thoughts

The CO LIGHT 4×6 LED Headlights offer a substantial upgrade over traditional sealed-beam lighting. With high-output LED performance, integrated DRLs, amber turn signals, waterproof construction, and broad vehicle compatibility, they’re an excellent solution for anyone looking to modernize visibility without sacrificing factory fitment.

Because if your headlights still look like they belong in a Reagan-era parking lot, it might be time for an upgrade.