Bosch AL0825N Alternator
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Bosch
 Alternator (New)

Bosch AL0825N Alternator

Brand Bosch AL0825N
Amperage Rating 150
Case Color Aluminum
Case Material Aluminum
External Fan Included Yes
External Regulator Included No
Fan Type Internal
New Or Remanufactured New
One Wire Capable No
Original Equipment Manufacturer Names BO, VA
Outside Pulley Diameter 56
Plug Clock Rear View Main Mounting Ear at 6 O Clock 12
Plug Type 367
Product Length 7.086614 in
Pulley Groove Quantity 6
Pulley Included Yes
Pulley Type 6S
Pulley Type / Belt Type (Alternator) 6S-CP
Regulator Type Internal
Rotation Direction Clockwise
Voltage 14
Product line Alternator (New)
Fits Audi · 26 vehicles

New alternator. Built and tested for dependable charging performance.

Aluminum case. Lightweight construction helps support reliable operation.

Internal regulator. Integrated design simplifies the charging system.

Cross-references 06B903016AC, 06B903016Q and 06D903016 for the same application. See all 3.

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Bosch AL0825N Alternator Overview

The Bosch AL0825N is a new 14-volt alternator built for charging-system replacement on select Audi applications. It is a 150-amp unit with an internal regulator, internal fan, and clockwise rotation, making it a direct-fit electrical replacement for vehicles that require this configuration.

As part of the Bosch Alternator (New) line, this unit reflects Bosch’s premium alternator platform, with design, build, and testing focused on consistent charging performance and dependable operation. The AL0825N also includes a pulley and uses a 6-groove belt setup for the specified applications.

Key Features

  • 14-volt alternator with 150-amp output
  • Internal regulator and internal fan design
  • Clockwise rotation
  • Pulley included; 6-groove pulley type
  • Aluminum case and aluminum case material
  • Outside pulley diameter: 56 mm
  • Plug type 367 with rear-view plug clock position at 12 o’clock
  • New Bosch alternator, part number AL0825N

Detailed Description

Bosch AL0825N is engineered for Audi charging-system service where the original alternator specification calls for a 150-amp, 14-volt unit. It is compatible with 2002-2009 Audi A4 and 2002-2009 Audi A4 Quattro applications listed for the 150-amp alternator configuration, including 2004-2006 Audi A4 models with Valeo or Bosch unit notes. This Bosch AL0825N alternator is a practical OE-style replacement for drivers addressing charging output concerns on Audi A4 and Audi A4 Quattro platforms.

This part cross-references Bosch OE-style applications such as 06B903016AC and 06B903016Q for the same application.

What It Helps Address

  • Battery warning light caused by low alternator output
  • Weak charging performance during driving
  • Electrical system voltage drop under load
  • Accessory operation issues tied to insufficient charging
  • Alternator failure on Audi A4 and Audi A4 Quattro charging systems

Installation Notes and Tips

  • Verify the vehicle uses a 150-amp alternator before ordering.
  • Confirm plug type 367 and the rear mounting-ear clock position match the original unit.
  • Check pulley groove count and belt alignment before installation.
  • Inspect the charging circuit, battery condition, and belt drive components during replacement.
  • Match the original alternator rotation direction and regulator style to the vehicle specification.

Quality Assurance

Bosch Premium Alternators are designed, built, and tested to support reliable charging-system performance. The AL0825N is a new alternator built to Bosch’s electrical component standards for the listed Audi applications.

Related reading

This part fits 26 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelBody TypeLitersCylindersPositionNotes
2009AudiA4—2.0LL4N/ATo 150 Amp Alternator; Alternator (New)
2009AudiA4 Quattro—2.0LL4N/ATo 150 Amp Alternator; Alternator (New)
2008AudiA4—2.0LL4N/ATo 150 Amp Alternator; Alternator (New)
2008AudiA4 Quattro—2.0LL4N/ATo 150 Amp Alternator; Alternator (New)
2007AudiA4—2.0LL4N/ATo 150 Amp Alternator; Alternator (New)
2007AudiA4 Quattro—2.0LL4N/ATo 150 Amp Alternator; Alternator (New)
2006AudiA4—2.0LL4N/ATo 150 Amp Alternator; Alternator (New)
2006AudiA4—1.8LL4N/ATo 150 Amp Alternator; with Valeo Unit; Alternator (New)
2006AudiA4—1.8LL4N/ATo 150 Amp Alternator; with Bosch Unit; Alternator (New)
2006AudiA4 Quattro—2.0LL4N/ATo 150 Amp Alternator; Alternator (New)
2005AudiA4Sedan1.8LL4N/ATo 150 Amp Alternator; Alternator (New)
2005AudiA4Convertible1.8LL4N/ATo 150 Amp Alternator; Alternator (New)
2005AudiA4—2.0LL4N/ATo 150 Amp Alternator; Alternator (New)
2005AudiA4Wagon1.8LL4N/ATo 150 Amp Alternator; with Bosch Unit; Alternator (New)
2005AudiA4Wagon1.8LL4N/ATo 150 Amp Alternator; with Valeo Unit; Alternator (New)
2005AudiA4 Quattro—1.8LL4N/ATo 150 Amp Alternator; Alternator (New)
2005AudiA4 Quattro—2.0LL4N/ATo 150 Amp Alternator; Alternator (New)
2004AudiA4Sedan1.8LL4N/ATo 150 Amp Alternator; Alternator (New)
2004AudiA4Convertible1.8LL4N/ATo 150 Amp Alternator; Alternator (New)
2004AudiA4Wagon1.8LL4N/ATo 150 Amp Alternator; with Bosch Unit; Alternator (New)
2004AudiA4Wagon1.8LL4N/ATo 150 Amp Alternator; with Valeo Unit; Alternator (New)
2004AudiA4 Quattro—1.8LL4N/ATo 150 Amp Alternator; Alternator (New)
2003AudiA4—1.8LL4N/ATo 150 Amp Alternator; Alternator (New)
2003AudiA4 Quattro—1.8LL4N/ATo 150 Amp Alternator; Alternator (New)
2002AudiA4—1.8LL4N/ATo 150 Amp Alternator; Alternator (New)
2002AudiA4 Quattro—1.8LL4N/ATo 150 Amp Alternator; Alternator (New)
Directly replaces or cross-references 3 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
06B903016AC06B903016Q06D903016