DNA MOTORING Headlight Mounting Bracket for Chevy Silverado & Avalanche 2003–2006 — Left, Direct-Fit Plastic

Durable left-side headlight mounting bracket engineered to replace the factory bracket on 2003–2006 Chevy Silverado and Avalanche models, providing a direct-fit, bolt-on swap for secure headlamp alignment.

This DNA MOTORING headlight bracket (part numbers GM1221130 / 15798921, model HLBK-0001-L) is molded from impact-resistant plastic to restore factory fit and function without modification. It is made to match the OEM dimensions so installation is straightforward, whether you’re repairing damage from a collision or replacing a worn mounting point. The piece is compatible with Silverado 1500/2500/3500 (2003–2006) and Silverado Classic 2007, plus Avalanche 1500/2500 models from the same years.

Will this bracket fit my Chevy Silverado or Avalanche?

Yes — this bracket is manufactured to align with the original mounting points for specified model years. Verify compatibility by matching your vehicle year and model to the listed fitment or cross-checking the OEM reference numbers.

• Compatible with: Silverado 1500, 2500, 3500 (2003–2006) and Silverado Classic 2007
• Also fits: Chevy Avalanche 1500 and 2500 (2003–2006)
• OEM reference: GM1221130 and 15798921 for confirmation

How easy is the installation and does it require drilling or special tools?

Installation is designed to be user-friendly and mirrors the factory replacement process. The bracket bolts directly into the stock holes so no drilling or trimming is needed for proper fitment.

• Direct bolt-on replacement—no modifications required
• Works with existing fasteners and mounting points
• Basic hand tools (socket set, screwdrivers) typically sufficient

What is the construction quality and how long will it last?

Constructed from high-quality, impact-tough plastic, the bracket resists bending and cracking under normal road conditions. It’s designed to meet or exceed OEM specifications to deliver reliable service life and maintain correct headlight positioning.

• Molded plastic for strength and longevity
• Built to OEM geometry to prevent misalignment
• Meets or exceeds factory standards for durability

What comes in the box and how can I ensure I ordered the correct side?

The package contains one left-side headlight mounting bracket, labeled for driver-side installation. Confirm you need the left (driver) side before ordering; checking part numbers or locating the damaged side on your vehicle helps avoid returns.

• Includes: 1 x left headlight mount bracket
• Packaged to meet or exceed OEM fit requirements
• Reference part numbers GM1221130 and 15798921 printed for verification

Who is this for: This replacement headlamp bracket is intended for owners, mechanics, and body shops working on 2003–2006 Chevy Silverado and Avalanche trucks (and Silverado Classic 2007) who need a reliable, OEM-compatible left-side mount. It’s ideal if you’re repairing collision damage, replacing a worn or cracked bracket, or performing headlight alignment work and want a straightforward, drop-in solution.