Lucas Lighting L3-H4 H4 LED Headlight Bulbs – 16,000 Lumens Dual Beam

Upgrade your compatible H4 headlights with the Lucas Lighting L3 Series H4 LED Headlight Bulbs. Designed as a premium replacement for factory halogen bulbs, the L3-H4 delivers up to 16,000 lumens per pair with a focused beam pattern, instant-on performance, upgraded CANBUS electronics, and IP67-rated moisture resistance.

The L3 Series was engineered to provide significantly more forward light than traditional halogen bulbs while maintaining a controlled beam pattern when properly installed and aimed. Its compact design and advanced electronics make the L3-H4 a premium LED upgrade for compatible H4 applications.

The L3-H4 is a dual-output, dual-beam bulb, allowing the same bulb to provide both low- and high-beam functions. It is designed for H4 applications and also replaces related 9003 and HB2 bulb configurations.

Why Choose Lucas Lighting L3 Series?

The L3 Series is Lucas Lighting's premium LED replacement bulb platform, developed around high light output, beam control, compact sizing, and broad CANBUS compatibility.

Lucas Lighting rates the L3 Series at 16,000 lumens per pair and states that the series can produce up to 7X the light output of stock halogen bulbs.

When properly installed and aimed, the L3's sweeping beam pattern and large focus point are designed to provide more useful forward illumination while maintaining a controlled pattern.

Key Features

• 16,000 lumens per pair
• H4 dual-beam / dual-output design
• Provides both low- and high-beam functionality
• Replaces compatible H4, 9003, and HB2 applications
• Up to 7X the light output of stock halogen bulbs
• Compatible with standard reflector and projector-style housings
• Upgraded CANBUS chipset
• IP67-rated moisture resistance
• Approximately 40% less current draw than halogen bulbs
• Instant-on LED performance
• Compact L3 Series design
• Sold as a pair of 2 bulbs

H4 / 9003 / HB2 Compatibility

The Lucas Lighting L3-H4 is designed for compatible vehicles and applications using the H4 bulb size.

Lucas Lighting also identifies the following related bulb designations as matching the L3-H4:

• H4
• 9003
• 9003CB
• 9003EB
• 9003ST
• 9003SU
• 9003XV
• HB2

Always verify your vehicle's original bulb size before ordering. Exact application can vary by year, make, model, trim level, and factory lighting configuration.

Dual-Beam H4 Design

Unlike single-output H7 and H11 bulbs, the H4 uses separate low- and high-beam functions within the same bulb.

The L3-H4 maintains this dual-beam configuration while upgrading the light source from traditional halogen technology to high-output LED.

This makes the L3-H4 an ideal choice for vehicles that use an H4 bulb for both low and high beam.

Designed for a Controlled Beam Pattern

A high lumen number alone does not determine how well a headlight performs. The L3 Series was designed around a focused and controlled beam pattern to help put more useful light where it is needed.

Lucas Lighting states that the L3 Series is compatible with both standard reflector and projector-style housings. Proper installation and headlight aiming remain important for achieving the intended beam pattern.

High-Output LED Performance

With up to 16,000 lumens per pair, the L3-H4 provides a substantial upgrade over traditional halogen lighting.

Lucas Lighting describes the L3 Series as producing a consistent, sweeping light pattern with a sharp and large focus point. The manufacturer also reports significant improvements in light range compared with original halogen bulbs.

Efficient LED Technology

The L3-H4 is designed to provide increased lighting performance while drawing less current than traditional halogen technology.

Lucas Lighting rates the L3 Series at approximately 40% less current draw than halogen bulbs.

The bulbs also feature instant-on operation, providing immediate LED illumination without a warm-up period.

CANBUS Compatibility

The L3 Series features an upgraded CANBUS chipset designed to provide broad compatibility with modern vehicle electrical systems.

Vehicle electrical systems can vary, however, and some applications may require an additional decoder for proper operation.

If your vehicle displays a bulb-out warning, experiences flickering, or has another electrical compatibility issue after installation, an additional Lucas Lighting decoder may be required.

Built for Real-World Conditions

The L3-H4 features IP67-rated moisture resistance, providing protection against dust and temporary water exposure when properly installed.

The combination of the compact L3 design, upgraded electronics, and moisture-resistant construction makes the L3-H4 a premium option for compatible automotive lighting applications.

What's Included

• 2 × Lucas Lighting L3-H4 LED Bulbs

Warranty

Lucas Lighting provides a 1-year limited warranty against manufacturing defects when consumer installed.

When professionally installed by a Lucas Lighting retailer for a non-commercial application, the L3 Series carries a 3-year limited warranty against manufacturing defects, subject to Lucas Lighting's warranty terms.

Important Application Information

These bulbs are intended for compatible H4 applications. Always verify your vehicle's original bulb size before ordering.

Lucas Lighting identifies its LED automotive replacement front-firing bulbs as intended for off-road and fog light applications. Check applicable local laws and regulations before using aftermarket LED replacement bulbs on public roads.

For best results, bulbs should be properly installed and the headlight beam should be correctly aimed after installation.

Quick-Spec Section

*Professional installation warranty is subject to Lucas Lighting's warranty terms.

FAQ

Is the Lucas Lighting L3-H4 a high and low beam bulb?

Yes. The L3-H4 is a dual-output, dual-beam bulb designed to provide both low- and high-beam functions from the same H4 bulb.

What bulb does the Lucas Lighting L3-H4 replace?

The L3-H4 is designed for H4 applications and also replaces compatible 9003, 9003CB/EB/ST/SU/XV, and HB2 bulb configurations.

How bright are the Lucas Lighting L3-H4 bulbs?

The L3 Series is rated at 16,000 lumens per pair. Lucas Lighting also states that the L3 Series can produce up to seven times the light output of stock halogen bulbs.

Will the L3-H4 work in reflector headlights?

Yes. Lucas Lighting states that the L3 Series is compatible with both standard reflector and projector-style housings.

Are the Lucas Lighting L3-H4 bulbs CANBUS compatible?

Yes. The L3 Series features an upgraded CANBUS chipset designed for broad vehicle compatibility. Some vehicles may still require an additional decoder depending on the vehicle's electrical system.

Are the L3-H4 bulbs plug and play?

The L3-H4 is designed as a replacement for compatible H4 applications. Installation requirements can vary depending on the vehicle, headlight housing, mounting arrangement, and available clearance.

Are the L3-H4 bulbs sold individually?

No. The L3-H4 is sold as a pair of two bulbs.

Are the Lucas Lighting L3-H4 bulbs waterproof?

The L3 Series carries an IP67-rated moisture-resistance rating. Proper installation is still important to maintain the intended protection.

How long is the warranty?

Lucas Lighting provides a 1-year limited warranty against manufacturing defects when consumer installed. Professional installation by a Lucas Lighting retailer for a non-commercial application qualifies for a 3-year limited warranty, subject to the manufacturer's warranty terms.

Will these bulbs fit my vehicle?

If your vehicle uses an H4, 9003, or HB2 bulb, the L3-H4 may be the appropriate replacement. Exact fitment can vary by year, make, model, trim level, and factory lighting configuration, so verifying the original bulb size before ordering is recommended.

Does the L3-H4 work for both high and low beam?

Yes. Unlike the L3-H7 and L3-H11 single-beam versions, the L3-H4 is specifically designed as a dual-beam bulb, allowing one bulb to handle both high- and low-beam functions.