Z-OFFROAD 4x6 LED Headlight Assembly 4PCS Chrome — DOT Approved Hi/Lo, 6500K Daylight, IP67

Z-OFFROAD 4x6 DOT-approved LED headlight assembly replaces sealed-beam H4651/H4652/H4656 units to deliver brighter, focused hi/low beams for trucks and classic cars.

This four-piece chrome kit is designed to modernize vehicles that use 4x6" sealed beam lamps. Each headlight is built with a sealed aluminum housing, a shatterproof polycarbonate lens and a projector-style optic to produce a clean 6500K white beam. The set includes two dedicated low-beam and two high-beam units, DOT/SAE markings, H4 connector accessories, and a layout that fits many heavy-duty trucks, commercial rigs and older GM models.

How much brighter are these LEDs compared with traditional halogen lights?

These Z-OFFROAD LEDs use high-quality chips and projector lenses to increase visible output while keeping beam control. They run at a 6500K color temperature for crisp daylight-white illumination and a broader reach.

• Rated at 5200 lm per pair for both low and high beams.
• Approximately 4x the brightness of stock halogen sealed-beam bulbs.
• Projector lens for tighter forward focus and reduced scatter.
• Clear "Z" shaped cutoff to minimize glare for oncoming traffic.

Will these headlights fit my truck or classic car?

The Z-OFFROAD 4x6 assemblies are engineered to be direct replacements for common sealed-beam sockets and widely compatible across brands. Check your existing bulb part numbers or lamp aperture to confirm fit.

• Directly replaces H4651 / H4652 / H4656 and similar 4x6" sealed beams.
• Compatible with Peterbilt, Freightliner, Kenworth, GMC, Chevy trucks and many classic GM models.
• Includes H4 connectors and installation accessories for straightforward wiring.
• Dimensions: 4.25" H x 6.61" W x 2.80" D — fits standard 4x6 housings.

How reliable and weatherproof are these lights for heavy-duty use?

They are built to withstand road vibration, moisture and temperature extremes, with materials and venting that extend service life. The assembly is sealed and rated for harsh conditions so it’s suitable for commercial use.

• Durable aluminum housing and UV-resistant, shatterproof PC lens.
• IP67 waterproof rating and eight breather valves to prevent fogging.
• Engineered heat dissipation for long LED lifespan (50,000+ hours).
• Anti-flicker design and corrosion-resistant finish for longevity.

How difficult is installation and what’s included in the kit?

Installation is intended to be user-friendly for technicians and DIYers familiar with headlamp swaps. The package contains the components needed to replace four sealed-beam lamps and adapt to standard 4x6 wiring.

• Package includes 2 high-beam and 2 low-beam LED units plus H4 connectors.
• Step-by-step instructions are provided for pin arrangement and polarity.
• No special ballast required — runs on 12V DC systems.
• Simple plug-and-play wiring for most 4x6 housings; minor adjustments may be needed.

Who this is for: The Z-OFFROAD 4x6 DOT LED headlight set is aimed at truck owners, fleet operators and classic car enthusiasts who need a robust, legal replacement for 4x6 sealed-beam lamps. Choose this kit when you want a significant brightness upgrade, controlled beam pattern to avoid blinding oncoming drivers, and a weatherproof assembly built for long service life.