Details

• Brand:

  

• SKU:

  4N1-903-028

• Description:

  The Genuine Audi Alternator 4N1903028 OEM is the factory-engineered 48V high-output generator designed for modern Audi performance engines, including the 3.0L and 4.0L mild-hybrid (MHEV) platforms. Built to handle the heavy electrical loads of today’s advanced systems—like adaptive suspension, active roll stabilization, and start/stop technology—this alternator provides consistent voltage output and optimized charging efficiency under all driving conditions.

  Manufactured to Audi’s exacting OEM standards, this alternator delivers exceptional power stability, durability, and thermal control, ensuring your electrical system operates at peak efficiency without voltage drop or battery drain.

  Key Features & Benefits

  • True OEM Performance – Genuine Audi 48V alternator designed for MHEV systems.

  • High Efficiency Output – Engineered for 3.0T and 4.0T engines with heavy electrical loads.

  • Durable Design – Advanced cooling channels for reduced heat and extended component life.

  • Direct Fit Replacement – No coding or modification required; bolt-on installation.

  • Restores OEM Charging Stability – Prevents undercharging, flickering lights, and system errors.

  Compatibility / Fitment

  Engineered for Audi models equipped with 48V mild-hybrid systems, including:

  • Audi A6 / A7 / A8 / Q7 / Q8 / S6 / S7 / SQ7 / SQ8

  • Engine types: 3.0T V6 TFSI, 4.0T V8 TFSI, MHEV Hybrid Platforms

  • OEM Reference: 4N1 903 028 – 48V Alternator Assembly

  (Verify with VIN for exact compatibility before installation.)

  Installation Notes

  • Direct bolt-on replacement with OEM connectors.

  • Ensure battery is fully charged before startup.

  • Check drive belt condition during installation.

  Why Choose Genuine OEM

  Aftermarket alternators often fail to meet Audi’s precise 48V output calibration, leading to charging inconsistencies, error codes, and premature component failure. The Genuine Audi 4N1903028 Alternator ensures factory-level reliability, power delivery, and performance stability under all load conditions.

• Replaces:

  4N0-903-028-N, 4N0-903-028-P, 4N0-903-028-PX, 4N1-903-028-X

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