V.K.Y Guangzhou International Trade Co., Ltd.
| OEM No | SA3F-4121010/SA3F-4121020 |
| Packaging Details | 60×40×30cm, Gross Weight: 3.8 kg |
| Delivery Time | 5-8 work days |
| Material | PC and ABS Composite Housing |
| Applicable Mod | BYD Song L DM-i (2024–2026) |
| Suitable for Car Brands | BYD |
| Base | full LED |
| Voltage | 12V |
| Color Temperature | 6000k |
| Waterproof | IP67 |
| Payment Terms | T/T,D/P,D/A,L/C,Western Union |
| Supply Ability | 100000 piece/per month |
| Power | Total ~48W (low beam: 18W, high beam: 18W, daytime running light: 12W; energy-efficient design) |
| Certification | CE, RoHS |
| Brand Name | BYD |
| Model Number | BYD Song L DM-i |
| Place of Origin | Chinese mainland |
View Detail Information
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Product Specification
| OEM No | SA3F-4121010/SA3F-4121020 | Packaging Details | 60×40×30cm, Gross Weight: 3.8 kg |
| Delivery Time | 5-8 work days | Material | PC and ABS Composite Housing |
| Applicable Mod | BYD Song L DM-i (2024–2026) | Suitable for Car Brands | BYD |
| Base | full LED | Voltage | 12V |
| Color Temperature | 6000k | Waterproof | IP67 |
| Payment Terms | T/T,D/P,D/A,L/C,Western Union | Supply Ability | 100000 piece/per month |
| Power | Total ~48W (low beam: 18W, high beam: 18W, daytime running light: 12W; energy-efficient design) | Certification | CE, RoHS |
| Brand Name | BYD | Model Number | BYD Song L DM-i |
| Place of Origin | Chinese mainland | ||
| High Light | ODM Auto Headlight Parts ，BYD Song Auto Headlight Parts ，BYD Song vehicle headlights | ||
SA3F-4121010 SA3F-4121020 Front LED Headlight Assembly For BYD Song L DM-i LED IP67 Waterproof
Product Overview
This LED headlight assembly is engineered as a direct replacement component for the 2024–2026 BYD Song L DM-i, maintaining compatibility across the entire trim architecture, including the 75KM, 112KM, 130KM, 160KM, and 200KM variants. The module is manufactured to correspond with OEM references SA5H-4121010 (Driver Side) and SA5H-4121020 (Passenger Side), with the "-A" suffix denoting support for adaptive matrix systems in top-tier configurations. The physical and electronic interfaces are calibrated to ensure dimensional parity with factory mounting points, facilitating a standard plug-and-play installation without necessitating wire-splicing or control unit re-programming.
Installation and System Integration:
Chassis Interface: Precision-mapped mounting lugs match factory-specified intake geometry to ensure flush panel alignment.
Electrical Handshake: The integrated terminal architecture interfaces directly with the vehicle’s 12V automotive grid and CAN-bus infrastructure, ensuring native recognition by the central lighting control unit without diagnostic interference.
| Parameter | Details |
|---|---|
| Product Type | LED Headlight Assembly (Left/Right) |
| OE Part Numbers | SA5H-4121010 (Left) / SA5H-4121020 (Right) |
| Applicable Model | 2024–2026 BYD Song L DM-i (All trims: 75KM/112KM/130KM/160KM/200KM) |
| Light Source | Full LED (DRL, Low Beam, High Beam, Turn Signal) |
| Voltage | 12V |
| Adaptive Function | Standard on 200KM Excellence trim (matrix LED with adaptive high beam); basic LED on other trims |
| Luminous Flux | Low beam: ~1350lm, High beam: ~1500lm |
| Color Temperature | 6000K (Daylight White) |
| Waterproof Rating | IP67 |
| Factory Certifications | CCC, ECE R112, SAE J599 (meets global automotive lighting safety standards) |
Five Key Benefits
Diagnostic-Transparent CAN-Bus Interfacing
This module utilizes a factory-mapped communication architecture that facilitates a closed-loop handshake with the Song L DM-i’s central lighting control module. By mirroring the original signaling protocols, it ensures that the "dragon claw" animation sequences and adaptive matrix logic function as factory-specified, preventing the generation of diagnostic trouble codes (DTCs) or electronic system rejection.
Solid-State Thermal Management Architecture
The internal illumination source moves away from legacy filament designs, employing a passive thermal-sink topology integrated directly into the LED diode array. This management of junction-temperature dissipation ensures consistent luminous flux maintenance and operational longevity, significantly reducing the probability of component-level failure under high-cycle usage.
Hybrid-Specific Load Mapping
The circuitry is tuned to the Song L DM-i’s power management logic, regulating the aggregate electrical draw within a stable 12V envelope. This load-balancing prevents transient voltage fluctuations during startup and peak operation, ensuring the lighting circuit remains electrically invisible to the vehicle’s high-voltage/low-voltage DC-DC conversion system.
Atmospheric Pressure Equalization (ePTFE Matrix)
Beyond basic ingress protection, the assembly features a micro-porous ePTFE ventilation matrix. This component allows for bidirectional molecular air exchange to neutralize internal pressure differentials, effectively mitigating the formation of condensation caused by extreme ambient temperature gradients, high-pressure washing cycles, or humidity-heavy environments.
Molecularly Stable UV Barrier Matrix
The lens is manufactured from high-transmission Polycarbonate (PC) and treated with a nano-silica hardening layer. This surface modification process creates a chemical barrier that increases the polymer's resistance to atmospheric oxidation and UV-induced degradation, maintaining optical clarity and transmittance levels within defined performance thresholds over the component's designated service life.
Company Details
Business Type:
Manufacturer,Trading Company
Year Established:
2015
Total Annual:
1-2.5
Employee Number:
100~200
Ecer Certification：
Verified Supplier
Who We AreV.K.Y Guangzhou International Trade Co., Ltd. is an auto parts supplier based in Guangzhou, China, specializing in components for Chinese New Energy Vehicles (NEVs). Our main focus is automotive lighting, including replacement headlights and tail lamps for major EV brands like BYD, MG, and... Who We AreV.K.Y Guangzhou International Trade Co., Ltd. is an auto parts supplier based in Guangzhou, China, specializing in components for Chinese New Energy Vehicles (NEVs). Our main focus is automotive lighting, including replacement headlights and tail lamps for major EV brands like BYD, MG, and...
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