Z-OFFROAD LED Headlight Assembly for 2003–2006 Chevy Silverado, DOT Approved Direct-Fit Sealed

Z-OFFROAD DOT Approved LED Headlight Assembly is a direct-fit, all-in-one LED replacement that upgrades 2003–2006 Chevy Silverado and compatible GM trucks with brighter, sealed, DOT-compliant lighting.

If you drive a 2003–2006 Chevy Silverado (including 1500, 2500, 3500 and HD models) or compatible Avalanche and Classic Silverados listed for the same years, these Z-OFFROAD headlights are engineered to replace OEM units without cutting or splicing. They combine multiple lighting functions in a single sealed housing, offering improved output, a defined beam cutoff, and weatherproof protection for long service life. Everything needed for installation ships in the box.

Will this headlight fit my Silverado or Avalanche?

Yes — the assembly is built to match the factory mounting points and replace specific GM part numbers so it installs like the original. Confirm fitment by cross-referencing model years and OEM numbers before ordering.

• Compatible with 2003–2006 Chevrolet Silverado 1500, 2500, 3500 & HD
• Also fits 2007 Silverado Classic 1500/2500/3500 and 2003–2006 Chevrolet Avalanche 1500/2500 (except factory body cladding models)
• Replaces OEM numbers such as 10396913, 10366038, 15199556, 15199557 and related GM part references

How bright and which lighting functions are included?

The Z-OFFROAD assembly integrates five practical lighting functions in one unit: high beam, low beam, turn signal, daytime running light (DRL) and side marker. The LEDs deliver a substantial increase in output over stock halogens while maintaining a focused beam to avoid blinding other drivers.

• High Beam: 168W total at about 10,000 lumens per set
• Low Beam: 108W total at about 6,000 lumens per set
• Built-in DRL, side marker and turn signal functionality

How difficult is installation and what’s in the box?

Installation is plug-and-play with no headlight housing modifications or wiring cutting required. The kit includes harnessing and resistors to match vehicle signaling and eliminate hyper-flash or error codes in many applications — read the included manual before you begin.

• Included: 2 LED headlights, 2 LED signal lights, 2 resistor panel boards
• Also includes black cotton harness tape and a USER MANUAL for step-by-step guidance
• No additional bulbs or harnesses typically required; do not use dielectric grease on contacts

How durable and weather-resistant are these headlights?

Z-OFFROAD uses a compact, fully sealed housing with one-way breathing valves and strong adhesive seals to prevent moisture intrusion and fogging. Materials and LED chips are selected for extended life and to resist yellowing and impact.

• IP67-grade protection against dust and water penetration
• Shatter-resistant polycarbonate lens with anti-yellowing treatment
• Rated lifespan around 50,000 hours under normal use

Who is this for? These headlights are aimed at Silverado and compatible GM truck owners who want a direct replacement that improves nighttime visibility, modernizes the vehicle’s front-end look, and reduces future bulb replacement. It’s a good choice for DIY installers who prefer a plug-and-play upgrade with integrated DRL and signal functions, and for drivers who need a sealed, weather-resistant solution for frequent or long-term use.