BMW M3 M4 G80/G82/G83 Laser LED Headlight Set 5A19367/9851042
For the BMW M3 (G80/G81) and M4 (G82/G83), the part numbers 5A19367 (Left) and 9851042 (Right) identify a pair of Genuine BMW Laser LED Headlight assemblies.
These are the “high-tier” lighting option (Option Code S5AZ) for the pre-LCI G8x generation, recognizable by their signature blue accents inside the housing and the iconic “hexagonal” Daytime Running Light (DRL) rings.
1. Component Specification
These part numbers typically refer to the Main Housing Units for the European/Global market (ECE Spec).
| Feature | Details |
| Technology | Laserlight + Selective Beam (Adaptive LED) |
| Part Number (L) | 63115A19367 / 5A19367 (Left/Driver Side) |
| Part Number (R) | 63119851042 / 9851042 (Right/Passenger Side) |
| Housing Style | Shadowline (Blacked-out internals) |
| Illumination Range | Up to 600 meters (in Laser high-beam mode) |
| Compatibility | M3 (G80/G81), M4 (G82/G83), 4 Series (G22/G23/G26), i4 |
2. The “Complete Set” Checklist
If you are purchasing these as a “Set” in New Original Packaging, you must verify if the Control Modules (Ballasts) are included. A “bare” headlight housing cannot function without the following 4 modules per side:
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Main LED Control Unit
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Laser Power Module
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Daytime Running Light (DRL) Module
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Cornering Light/Indicator Module
Note: Many retail “sets” under these numbers are sold as “Plug & Play Retrofits,” meaning they include the modules and are sometimes pre-coded. If you are buying used or “bare” housings, you will need to transfer your existing modules or buy new ones (e.g., Module 63119851049 for the DRLs)
3. Retrofit & Coding (Important)
If you are upgrading from the standard Base LED headlights to these Laser LEDs, it is not a simple swap:
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Hardware: The wiring harness for the Base LED and Laser LED is different. You will need a Retrofit Wiring Adapter.
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Coding: Your car’s Vehicle Order (VO) must be updated to include $5AZ (BMW Laserlight). Without coding, the high beams will not function, and you will receive a “Lighting System Malfunction” error.
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Anti-Dazzle: ECE-spec lights (like 5A19367) support “Selective Beam,” which “tunnels” the high beam around oncoming traffic. This must be enabled via ESYS or ProTool.
4. Design Variations
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Shadowline vs. Standard: These specific part numbers are the Shadowline variant, which removes most of the internal chrome for a more aggressive, dark appearance.
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CSL Yellow DRL Upgrade: Because you are looking at the pre-LCI Laser housings, these are the correct units if you wish to install the popular CSL-style Yellow DRL modules (a common 2026 “Yellow Light” mod).
5. Market Context (2026)
With the 2025/2026 LCI (Life Cycle Impulse) transition, BMW moved toward a new “Vertical Arrow” DRL design. The “Hexagonal” Lasers (5A19367/9851042) are now considered a “Legacy” high-end part.
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