BMW E82 E90 E91 E92 LCI Alternator Generator 170A 12V 7591532

BMW E82 E90 E91 E92 LCI Alternator Generator 170A 12V is a factory-original power generator from the Alternators and generators group, designed for facelift (LCI) BMW 1 and 3 Series petrol engines. It offers stable charging for the 12V electrical system under high electrical load, which translates into reliable operation of on-board systems and power reserves for additional electrical consumers.

Specifications and technical data

• SKU: 7591532
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7591532
• Substitutable numbers: 7591532, 12317591532
• Fuel type: Petrol
• Part type: Alternator
• Category: Alternators & Generators

Application and compatibility

The presented alternator is intended for BMW E82, E90, E91, and E92 models in facelift versions equipped with petrol engines. The design has been developed to meet the requirements of BMW electrical systems, ensuring proper battery charging parameters and stable power supply for control units, comfort systems, and additional equipment.

Thanks to its high current output, the alternator is suitable for vehicles with extensive electronics, such as advanced multimedia systems, elaborate lighting, or additional accessories installed by the user. This is a solution dedicated to drivers who expect predictable charging system performance in daily operation.

Operating parameters and technical characteristics

The alternator operates in a standard 12V system, providing a high charging current suitable for modern BMW petrol engines. It is designed to maintain stable voltage across a wide engine speed range, which reduces the risk of voltage drops under heavy electrical load.

Key features of this model include:

• high current efficiency, allowing for the power supply of multiple consumers simultaneously,
• adaptation to the specifics of BMW E-series petrol engines,
• compatibility with factory charging control systems in facelift vehicles,
• design intended for operation in the demanding temperature conditions of the engine bay.

An alternator configured in this way helps maintain the appropriate energy level in the system, which is crucial for both battery longevity and the reliability of on-board electronics.

Benefits of using an original BMW alternator

Using an alternator from the BMW range means maintaining the factory charging system performance parameters. The original design ensures proper fitment for mounts, electrical connections, and control characteristics, which facilitates installation and reduces the risk of operational issues.

The main advantages include:

• consistency with the factory electrical system – no need for wiring or bracket modifications,
• predictable behavior in typical road conditions,
• parameters compliant with the requirements of BMW E82/E90/E91/E92 LCI petrol engines,
• ability to utilize existing control unit architecture and diagnostic systems.

Such a solution is particularly beneficial for professional repairs, where consistency of results and compliance with the vehicle manufacturer's specifications are paramount.

Condition, verification, and part selection

The offered alternator is a used component, which in practice means an attractive cost-to-functionality ratio while maintaining the original BMW specification. This is a good solution when you want to maintain the factory configuration of the vehicle while optimizing your repair budget.

Before purchasing, it is worth verifying the alternator's compatibility with the specific engine version and model year of your BMW using the OEM part number and available interchangeable numbers in the specification section. This allows for precise component matching to the existing installation, avoiding issues with installation or communication with the vehicle's electronics.

BMW alternators and generators – expansion and charging system service

If you are planning a comprehensive repair or upgrade of the engine area in your BMW and need other elements from the same group, such as additional generators, alternators with different capacities, or compatible mounting components, check the available parts in the BMW alternators and generators category.

If you operate a BMW E90 and want to better understand the potential loads on the charging system resulting from the specifics of the engines, the guide regarding problematic engines in this model may be helpful – you can find it in the article Troublesome BMW E90 engines: check what can ruin your budget!.