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Welcome to Source One Auto Parts!

Welcome to Source One Auto Parts!

Headlamp Assembly

Find New OEM headlamp assemblies for GM vehicles. Our factory-original halogen, HID, and LED headlight units are sourced from GM surplus — the exact beam pattern, mounting geometry, and electrical connector for your specific model and year.

OEM headlamp assemblies provide the correct beam cutoff pattern, luminous intensity, and aiming adjustment range required by your vehicle's headlamp system. Aftermarket assemblies frequently produce incorrect beam patterns, exhibit moisture intrusion, and fail to integrate properly with automatic leveling and AHB systems.

Headlamp assemblies are highly model-year and trim-level specific. Verify part numbers against your vehicle's lighting option codes before ordering. HID units include the projector housing but the ballast and bulb may be sold separately.

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