Audi A4 B7 Petrol Engine Alternator Generator Electric Unit 14V 140A 06B903016AB

Audi A4 B7 Petrol Engine Alternator Generator Electric Unit 14V 140A is an original component from the Alternators and generators group, designed for petrol-powered systems. It ensures stable charging of the 14V system with a load of up to 140A, which is crucial for the proper operation of electronics, ignition, and comfort equipment in your Audi.

Specifications and technical data

• SKU: 06B903016AB
• Mark: Audi
• Condition: Used
• OEM Part Number: 06B903016AB
• Substitutable numbers: 06B903016AB, 06B 903 016 AB, 0124525088
• Fuel type: Petrol
• Category: Alternators & Generators

Purpose and operating parameters

The presented alternator has been designed to work with petrol engines in the Audi A4 B7 generation, where an efficient source of electrical energy with a voltage of 14V and a current capacity of 140A is required. This operating range allows for reliable power supply to key consumers, such as the ignition system, engine control units, safety systems, and extensive comfort equipment.

Thanks to a properly selected charging characteristic, the alternator maintains stable voltage in the system, reducing the risk of voltage drops under heavy load and supporting the proper operation of the battery in both urban and extra-urban conditions.

Benefits of using an original Audi alternator

Using an original alternator in an Audi A4 B7 brings a number of practical benefits:

• precise fit to the mounting and accessories of the petrol engine,
• preservation of factory charging characteristics,
• proper cooperation with onboard electronics and control units,
• reduction of the risk of starting problems and unstable voltage.

For the user, this means more predictable operation, a lower risk of electrical system failure, and the maintenance of performance parameters close to factory specifications. Choosing an original element from the Alternators and generators group is particularly important in modern vehicles where electrical load is high.

Condition and compatibility verification

The offered alternator is a used part, which allows for an economical repair of the charging system while maintaining the original design. Before purchasing, it is worth verifying the compatibility of the part with your specific Audi A4 B7, especially regarding the petrol engine type and the accessories used. Data such as the OEM part number, interchangeable numbers, and manufacturer markings, which you can find in the technical specifications section, may be helpful.

Selecting an alternator with the appropriate 140A current capacity is important especially in vehicles equipped with additional energy consumers, such as extensive audio systems, heated seats, or advanced driver assistance systems.

Professional installation and operation

To ensure trouble-free operation of the charging system, it is recommended to have the alternator installed by an experienced service center, maintaining the correct drive belt tension and checking the battery condition. A properly selected and installed alternator reduces the risk of overcharging or undercharging the battery, which translates into a longer service life of the entire electrical system.

If you are planning a comprehensive repair or upgrade of the power supply area in your Audi and need other elements from the same group, such as alternator housings, pulleys, or mounting brackets, check the available parts in the Audi alternators and generators category.

Technical support and additional knowledge

When working with engine accessories – both in Audi and other premium brands – it is crucial to understand the relationship between the alternator, timing system, injection system, and control units. If you want to expand your knowledge on the operation and maintenance of accessories in modern power units, read the article Reliability under the star sign – how to take care of engine accessories in popular Mercedes-Benz C-Class and E-Class models?, which discusses practical principles for selecting and maintaining key components.