TYC 20-6678-00 Headlight Assembly - Left

Pontiac G6 Left Headlight Assembly

This TYC Regular headlight assembly is a direct-fit exterior lighting replacement for the left side of select Pontiac G6 models. It includes the bulbs and arrives as a complete assembly, making it a practical choice for restoring forward lighting on the Pontiac G6.

Part number 20-6678-00 is built for halogen applications and is SAE/DOT compliant. It is designed for 2005-2008 Pontiac G6 left headlight applications, and for 2008-2010 Pontiac G6 left headlight applications without the CTF package.

Key Features

• TYC Regular headlight assembly for exterior lighting replacement
• Fits left side Pontiac G6 applications
• Complete assembly with bulbs included
• Halogen high beam and low beam bulb types
• Plastic lens and plastic housing construction
• SAE/DOT compliant for road use
• Cross-reference: Partslink GM2502255
• OE reference: Pontiac 20821143

Product Details

TYC 20-6678-00 is a halogen headlight assembly engineered for the left side of the Pontiac G6. The unit includes both high beam and low beam bulbs and uses a complete-assembly design, which supports a straightforward replacement when the original headlamp is damaged, clouded, or no longer functioning properly. The plastic lens and housing match common OE-style construction for exterior lighting service.

TYC Regular focuses on replacement lighting components built for everyday repair needs, with fitment coverage for 2005-2008 Pontiac G6 left headlight applications and 2008-2010 Pontiac G6 left headlight applications without the CTF package. Part number 20-6678-00 is also identified by Partslink GM2502255.

Common Reasons for Replacement

• Cracked or broken left headlight lens
• Dim, failed, or inconsistent halogen lighting
• Moisture intrusion or housing damage
• Clouded or yellowed headlamp output
• Restoring proper front-end lighting on a Pontiac G6

Installation Notes

Verify left-side fitment before installation and confirm the vehicle is equipped with halogen lighting. This assembly is listed for 2005-2008 Pontiac G6 left applications and 2008-2010 Pontiac G6 left applications without the CTF package. Compare the existing connector, mounting points, and the opposite-side part number 20-6677-00 before final installation.

Quality Assurance

This TYC Regular headlight assembly is SAE/DOT compliant and built as a complete replacement lighting unit for the Pontiac G6. It is intended to restore proper exterior lighting performance using the specified halogen configuration and OE-style fitment references.