$12.00

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BYD Horn OEM 1127873600 HA3721020 FOR Atto3 Yuan

part number: 11278736-00

Brand: BYD OEM

Replaces: HA-3721020

Categories: Horn

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Deliver from China · Delivers in 10-15 days

Returns & exchanges accepted within 30 days

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Vehicle Fitment

💡 Pro Tip: Check with our customer support to confirm compatibility before buying

11278736-00 / HA-3721020 fit for follow vehicles:

BrandModelYears
BYDYuan PLUS EV2021
BYDAtto3 PLUS EV2021
BYDAtto3 PLUS EV2023
BYDYuan PLUS EV2022
BYDYuan PLUS EV2024
BYDAtto3 PLUS EV2024
BYDAtto3 PLUS EV2022
BYDYuan PLUS EV2023

Common Failures of BYD 1127873600 Horn for Atto3 PLUS EV/Yuan PLUS EV

  • Weak Sound Output: Some Atto 3 PLUS EV and Yuan PLUS EV owners with OE number 1127873600 horns report the sound is too faint.
  • No Sound: A common issue, the horn with OE 1127873600 in these models may suddenly stop working.
  • Intermittent Sound: The horn might produce sound intermittently, affecting safety in these EVs.

Maintenance Tips of BYD 1127873600 Horn for Atto3 PLUS EV/Yuan PLUS EV

  • First, locate the BYD Atto 3 PLUS EV/Yuan PLUS EV's horn. Usually, it's near the front bumper. Check the OE number 1127873600 to ensure you have the correct BYD horn.
  • Before installation, test the horn on a bench. Connect it to a 12V power source. If it doesn't sound properly, there might be a defect in the new BYD horn.
  • Remove the old horn carefully. Disconnect the electrical connector and loosen the mounting bolts. Keep the bolts in a safe place for reuse.
  • When installing the new BYD horn, align it correctly with the mounting holes. Tighten the bolts evenly to avoid vibrations.
  • After installation, reconnect the electrical connector. Make sure it's firmly attached to prevent intermittent sound issues.
Warning: Always disconnect the battery before working on the horn to avoid electrical shock. This applies to all BYD Atto 3 PLUS EV/Yuan PLUS EV models.

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