Product Overview
The Peterbilt 379 runs a dual 4×6 sealed beam setup. Over time, factory sealed beams lose clarity, suffer from reflector fade, or become difficult to service.
Key Features & Benefits
Direct H4656 Sealed Beam Replacement
Designed to replace standard H4656 4×6 sealed beam low beam headlights commonly found in Peterbilt 379 dual setups.
No custom brackets. No fabrication.
Dual-Function Reflector Housing
Although optimized for low beam position, this housing supports both:
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Low Beam Output:
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1,000 lumens (raw)
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835 lumens (effective)
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High Beam Output:
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1,300 lumens (raw)
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1,130 lumens (effective)
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This allows you to maintain proper beam balance in a 4-light 379 configuration.
Glass Lens for Long-Term Clarity
Unlike plastic sealed beams, this housing features:
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Crystal glass lens
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Improved scratch resistance
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Better optical clarity retention
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Resistance to yellowing over time
Ideal for heavy-duty use.
Serviceable 9007 Halogen Bulb
Includes a pre-installed 9007 halogen bulb.
Benefits:
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Easy bulb replacement
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Lower long-term cost
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Widely available bulb type
Compatible with 12V systems.
Efficient Electrical Draw
At 12V DC:
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Low Beam: 4.4A
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High Beam: 5.3A
Strong illumination without excessive electrical demand.
DOT & SAE Compliant
This housing meets FMVSS 108 standards for legal on-road use.
DOT and SAE markings support compliant installation.
Compliance may vary by vehicle configuration — verify local regulations if unsure.
Performance / Compatibility / Use-Case
The Starr 4×6 Halogen Conversion Housing upgrades your 379 by replacing outdated sealed beams with a serviceable halogen reflector system that offers:
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Improved beam clarity
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Replaceable 9007 bulb design
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Glass lens durability
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OEM-style fitment
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DOT/SAE compliance
This is ideal for drivers who want dependable halogen lighting without switching to LED.
Installation / Fitment / Technical Details
Designed as a direct-fit replacement for H4656 sealed beam low beam positions in Peterbilt 379 headlight buckets.
Typical install:
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Remove factory sealed beam
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Connect included 14-gauge wiring adapter
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Mount housing into existing bucket
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Aim headlights properly
No rewiring required.
Product Type: 4×6 Halogen Reflector Headlamp
Replacement For: H4656 Sealed Beam
Low Beam Output: 1,000 lm raw / 835 lm effective
High Beam Output: 1,300 lm raw / 1,130 lm effective
Lens Material: Glass
Bulb Type: 9007 Halogen (Included)
Voltage: 12V DC
Current Draw: 4.4A Low / 5.3A High @ 12V
Compliance: DOT / SAE (FMVSS 108)
Build Quality / Warranty
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Die-cast aluminum multi-surface reflector
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Glass lens construction
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Black electro-deposited housing finish
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Includes protective rubber cover
Built to withstand vibration and harsh road conditions.
Warranty: 1-year manufacturer warranty.
What’s Included
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1 × 4×6 Halogen High/Low Beam Reflector Headlamp
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1 × 9007 Halogen Bulb (Pre-installed)
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1 × Heavy-Duty 14-Gauge Wiring Adapter
Frequently Asked Questions
Will this fit my Peterbilt 379?
Yes. The Peterbilt 379 uses a 4×6 sealed beam format. This housing is designed as a direct H4656 replacement.
Is this LED or halogen?
This is a halogen reflector conversion housing using a replaceable 9007 bulb.
Is this street legal?
Yes. It meets DOT and SAE standards under FMVSS 108 when installed correctly.
Can I install LED 9007 bulbs in this housing?
LED bulb compatibility varies by SKU and local regulations. Check the listing or contact us to confirm proper fitment and compliance.
