United Pacific – Ultralit 4 x 6 Crystal Rectangular Headlight Glass Lens High Low Beam

Ultralit 4 x 6 Crystal Rectangular Headlight with Glass Lens – High & Low Beam

The Ultralit 4 x 6 Crystal Rectangular Headlight from United Pacific is built for superior illumination and long lasting durability. Featuring a crystal clear glass front lens and a reinforced aluminum reflector, this headlight delivers bright, focused lighting for both high and low beam operation. The rugged anti-vibration construction ensures reliable performance in demanding road conditions. A Sylvania 12V 65/55W 9007 halogen bulb comes pre-installed for convenience.

This Ultralit headlight is DOT/SAE compliant and FMVSS 108 certified, providing safe, legal performance on the road. It serves as a direct replacement for sealed beam headlights and includes an adapter plug to make installation simple. Perfect for Peterbilt 379, Kenworth W900, and other heavy-duty applications.

Product Features

• Manufacturer: United Pacific
• Series: Ultralit
• Item Number: 31388
• Lens Material: Crystal clear glass
• Reflector: Reinforced aluminum reflector
• Lighting Type: High & low beam
• Bulb Type: Pre-installed Sylvania 12V 65/55W 9007 halogen
• Construction: Rugged anti-vibration design
• Compliance: DOT/SAE approved, FMVSS 108 certified
• Compatibility: Direct replacement for sealed beam headlights Ideal for Peterbilt 379 Ideal for Kenworth W900
• Includes: Adapter plug for easy installation
• Sold individually

Performance and Fit

This Ultralit headlight provides strong, clear illumination for improved nighttime visibility. The glass lens maintains clarity over time, while the reinforced reflector enhances beam focus and distance. Anti-vibration construction helps maintain stable performance on rough roads, and the direct replacement design ensures easy compatibility with sealed beam housings.

• 1987-2010 Freightliner FLD
• 1984-1997 Kenworth C500
• 1985-2004 Kenworth K100
• 1988-1997 Kenworth T400
• 1989-1997 Kenworth T450
• 1990-2007 Kenworth T600
• 1986-1997 Kenworth T600A
• 1987-2020 Kenworth T800
• 1983-2020 Kenworth W900
• 1987-2016 Peterbilt 320
• 1987-2000 Peterbilt 357
• 1986-1988 Peterbilt 359
• 1981-2005 Peterbilt 362
• 1988-1999 Peterbilt 377
• 1986-1999 Peterbilt 378
• 1987-2007 Peterbilt 379

Installation

1. Remove the existing sealed beam headlight.
2. Connect the included adapter plug to the vehicle’s headlight harness.
3. Install the Ultralit headlight into the housing.
4. Secure the headlight and test both high and low beams.

Why You Will Love It

• Crystal clear glass lens enhances visibility
• Rugged construction for long lasting performance
• Direct replacement for sealed beam headlights
• DOT/SAE and FMVSS 108 certified
• Pre-installed Sylvania halogen bulb
• Compatible with Peterbilt and Kenworth models

Common Questions

• Is the bulb included? Yes, a Sylvania 9007 bulb is pre-installed.
• Does it fit sealed beam housings? Yes, it is a direct replacement.
• Is it legal for highway use? Yes, it is DOT/SAE and FMVSS 108 compliant.

⚠️ California Proposition 65 Warning:
This product can expose you to chemicals including those found in glass, metal, and electrical components, which are known to the State of California to cause cancer and reproductive harm.