This product is professionally designed for BYD’s popular Ocean Series model—the BYD Formula Leopard 5, serving as a core safety lighting component that integrates low beam, high beam, daytime running lights, position lights, and turn signals into a single assembly.

As a professional manufacturing factory specializing in automotive lighting systems and body accessories, our left and right front headlamp assemblies strictly follow OE specifications, dedicated to providing the global aftermarket with high-brightness, high-durability, long-life replacement solutions.

The front headlamp assembly is the most critical lighting and signaling lamp at the vehicle’s front, performing core safety functions including night road illumination, daytime running indication, and turn signal indication. According to design descriptions, the Seal 5 features BYD’s “Ocean Aesthetic” design language, with headlights adopting the family-style wave contour, equipped with dual-layer LED daytime running lights and lenses, creating a highly recognizable appearance. The headlights connect to a full-width light bar, creating a low, sporty visual effect .

Compatible with all BYD Formula Leopard 5 models (including DM-i 75km/115km range versions). According to official data, the Formula Leopard 5 measures 4780×1837×1515mm with a wheelbase of 2718mm. All trims come standard with LED headlights and LED daytime running lights, while high-trim models feature adaptive high/low beam functionality .

• The front headlamp assembly is a safety lighting component—no fixed replacement cycle under normal conditions. LED light sources can last over 50,000 hours, but housing and seals may require replacement due to aging .

• When lens damage, water ingress, fogging, or LED failure occurs, prompt replacement is required.

• The front headlamp assembly is left/right independent—a damaged side can be replaced separately without replacing both sides.

Installation Instructions

Tools Required:

• Plastic trim removal tool

• Phillips screwdriver / Socket wrench

• Torque wrench

• Cleaning cloth

Installation Steps (General Reference):

1. Disconnect power: Disconnect vehicle 12V battery negative terminal

2. Remove front bumper/grille: Depending on the model, remove front bumper or grille to access headlamp assembly

3. Remove headlamp mounting screws: Remove screws securing the headlamp assembly (typically 3-4 screws)

4. Disconnect electrical connectors: Unplug the harness connectors from the headlamp assembly

5. Remove old lamp assembly: Carefully remove the old front headlamp assembly

6. Compare & confirm: Verify new part matches old in left/right orientation and connector type

7. Install new lamp assembly: Position the new front headlamp assembly—align with mounting holes

8. Tighten mounting screws: Install and tighten screws to specified torque

9. Connect harness: Reconnect headlamp harness connectors—ensure secure connection

10. Reinstall bumper/grille: Reinstall front bumper or grille

11. Reconnect & test: Reconnect battery, start vehicle—test all lighting functions

【Professional Tips】:

• Pay attention to left/right orientation: Left headlamp (OE: HA6HA-4121010) and right headlamp (OE: HA6HA-4121020) are separate components

• Avoid touching the inner surface of the lens during installation—fingerprints or stains may affect light transmission

• Headlight leveling adjustment is mandatory after replacement—ensure low beam angle meets regulatory requirements

• If equipped with adaptive high/low beam, functional verification is required after replacement