BTONGINT | Auto Parts R&D, Automotive Electronics and PCBA Manufacturing Solutions

Blower Fan

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OEM Blower Motor 4M1820021 4M1820021A 4M1820021B for Audi A4 B9
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OEM Blower Motor 4M1820021 4M1820021A 4M1820021B for Audi A4 B9

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12V OEM replacement blower motor for Audi A4 B9 with part numbers 4M1820021, 4M1820021A and 4M1820021B.…
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BTONGINT

Auto Parts R&D, automotive electronics and PCBA manufacturing solutions for OEM and ODM programs. We focus on switches, blowers, lighting systems and power tailgate electronics.

Automotive Electronics

Capabilities

  • OEM / ODM support
  • PCBA manufacturing
  • Switches and blower modules
  • Lighting and tailgate systems
© BTONGINT 2026. All rights reserved. Auto Parts R&D | Automotive Electronics | PCBA
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