SA3E-4121010B SA3E-4121020B Genuine OEM LED Headlight Assembly for BYD Seagull 2023-2025 Direct Fit Replacement Headlamp

SA3E-4121010B SA3E-4121020B Genuine OEM LED Headlight Assembly for BYD Seagull 2023-2025 Direct Fit Replacement Headlamp

Description

Is your BYD Seagull’s factory headlight dim, cracked, or no longer performing as it should? Beyond just dulling your car’s look, a faulty headlight cuts nighttime visibility and can even lead to failed safety inspections. Our OEM-spec LED headlight assembly (OE# SA3E-4121010B / SA3E-4121020B) is the perfect direct replacement for 2023-2025 BYD Seagull hatchbacks, engineered to match every detail of the original factory unit.

Designed with the factory’s dual-beam projector lens and integrated daytime running light (DRL), this headlight delivers the same crisp, glare-free illumination as the OEM part, ensuring clear visibility on dark roads while preserving your Seagull’s iconic front styling. It features factory-aligned mounting points, clips, and a pre-matched wiring harness for true plug-and-play installation—no modifications, wire splicing, or dealer programming required.

Built to the same strict quality standards as the original component, this headlight is fully compatible with your vehicle’s 12V electrical system, so you won’t face dashboard warning lights or error codes after installation. With a durable, UV-stabilized polycarbonate lens and IP67 dust/water resistance, it stands up to harsh weather conditions for long-lasting, reliable performance, keeping your drives safe and worry-free for years to come.

Parameter	Specification
OEM Part Number	Left: SA3E-4121010B, Right: SA3E-4121020B
Applicable Vehicle	BYD Seagull Hatchback (All Trims)
Applicable Year Range	2023-2025
Light Source Type	Full LED with Dual-Beam Projector
Rated Voltage	12V DC
Waterproof Rating	IP67
Lens Material	UV-Resistant Polycarbonate
Color Temperature	6000K Pure White
Operating Temperature	-40℃ to +85℃
Installation Position	Front Headlight (Left Driver / Right Passenger)

Point

Exact OE Fit for 2023-2025 BYD Seagull
Direct factory replacement matching OEM part numbers SA3E-4121010B (Left) and SA3E-4121020B (Right). Fits all trim levels of the 2023-2025 BYD Seagull hatchback perfectly, with factory-aligned mounting brackets and body panel compatibility. No cutting or modifications are needed for a seamless, original-looking install.
Factory-Grade LED Projector Lighting
Built with the same full LED dual-beam projector system as the original headlight, featuring integrated factory-style daytime running lights (DRL). Delivers glare-free, wide-range illumination that meets factory brightness standards, improving night visibility and road safety while preserving your Seagull’s signature lighting design.
Plug-and-Play Installation for All Users
Comes with factory-matching wiring harness and electrical connectors for true plug-and-play installation. All mounting clips, fasteners, and brackets are identical to the original assembly, so you can replace the headlight quickly without wire splicing or dealer programming—ideal for DIYers and professional mechanics alike.
Durable, Weather-Resistant Construction
Features a UV-stabilized polycarbonate lens to resist yellowing, fading, and cracking from sun exposure. Rated IP67 for dust and water resistance, just like the OEM part, ensuring reliable performance in rain, snow, and extreme temperatures to keep your headlight working for years.
Full Electrical Compatibility, No Dashboard Errors
Engineered to work seamlessly with the BYD Seagull’s onboard lighting control module and 12V electrical system. All functions (low beam, high beam, DRL) operate exactly as factory-intended, with no warning lights or error codes on the dashboard—eliminating common issues with incompatible aftermarket headlights.