Why Choose Morimoto Sealed4 4×6 LED Headlights
If you’re serious about lighting performance, this is not your average 4×6 LED headlight. The Morimoto Sealed4 is built around true projector optics—not just raw brightness—giving you a controlled beam pattern, better road coverage, and less glare.
This is the upgrade for drivers who want real performance, not just a visual upgrade.
Key Features & Benefits
True Bi-LED Projector Performance
Unlike standard reflector-style LEDs, the Sealed4 uses a Kuria Optic projector lens to deliver a sharp, controlled beam pattern with excellent cutoff and forward throw.
High Output with Usable Light
- Low Beam: 2400 lumens
- High Beam: 4300 lumens
More importantly, the light is properly focused—so you actually see more of the road where it matters.
Premium Nichia LED Technology
Equipped with Nichia NCSW170C LEDs (5000K pure white)—known for reliability, efficiency, and consistent output.
Advanced Thermal Management
Heavy-duty die-cast aluminum housing doubles as a heat sink, keeping temperatures controlled for long-term performance and lifespan.
Sealed Beam Replacement Simplicity
Designed to directly replace standard 4×6 sealed beam headlights using an H4 3-pin input, making it compatible with a wide range of trucks and classic vehicles.
Durable, Long-Lasting Construction
- UV-coated polycarbonate lens resists fading and damage
- Solid-state LED system (no bulbs to replace)
- Built for demanding real-world driving conditions
Performance, Compatibility & Use Case
Fits any application using standard 4×6 sealed beam headlights, including:
- Peterbilt 357, 365, 378, 379
- Kenworth T600, T800, W900
- Freightliner Classic
- Western Star 4900 series
- Classic cars and retrofit applications
Best suited for:
- Drivers demanding maximum nighttime visibility
- Long-haul operators
- High-end builds and premium upgrades
- Anyone upgrading from poor beam pattern LEDs or halogen
Installation & Technical Details
- Direct H4 3-pin connection
- Plug-and-play for most 4×6 applications
- LHD traffic pattern (North America)
- No external driver boxes required
Build Quality & Materials
- Housing: Die-cast aluminum
- Lens: UV-coated polycarbonate
- Light Source: Nichia LEDs (5000K)
Designed to outperform and outlast standard LED replacements.
What’s Included
- (1) Morimoto Sealed4 Bi-LED 4×6 Headlight
Frequently Asked Questions About Morimoto Sealed4 4×6 Headlights
What makes the Morimoto Sealed4 different from other 4×6 LED headlights?
The biggest difference is the projector-based optics. Instead of scattering light like many budget LEDs, the Sealed4 produces a controlled beam pattern with better visibility and less glare.
Are these headlights plug-and-play?
Yes, they use a standard H4 3-pin input and are designed to replace sealed beam 4×6 headlights directly.
Are these brighter than standard LED 4×6 headlights?
Not just brighter—more usable. The focused beam pattern means more light is directed where you need it instead of being scattered.
Will these fit a Peterbilt 379 or Kenworth W900?
Yes, they are compatible with any truck using standard 4×6 sealed beam headlights, including Peterbilt and Kenworth models.
What color temperature are these headlights?
They use a 5000K pure white output, which provides a clean, natural light without excessive blue tint.
Do these headlights have high and low beam?
Yes, they are true bi-LED headlights with both low and high beam functions built into the same unit.
Are these better than halogen headlights?
Yes, significantly. They provide better brightness, improved beam control, and longer lifespan compared to halogen sealed beams.
Do I need any additional wiring or accessories?
In most cases, no. They are designed to work with standard H4 connections, but wiring requirements can vary by vehicle.
