BMW 1 3 5 E60 E61 E87 E90 E91 N52 WAI Alternator Generator 155A 11077N

BMW E60 E87 E90 Alternator 155A 11077N is an original part from the Alternators and Generators group, designed for BMW cars with gasoline engines. This used alternator ensures stable power supply to the vehicle's electrical system and proper battery charging, which is crucial for the reliable operation of all onboard systems.

Specifications and technical data

• SKU: 7543083-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7543083
• Substitutable numbers: 12317543083, 7543083, 12317542529, 7542529, 12317551256, 7551256, 12317550967, 7550967, 11077N, BG
• Fuel type: Petrol
• Category: Alternators & Generators

Purpose and Compatibility

The alternator has been designed for BMW E60, E87, and E90 models with gasoline engines. The OEM construction guarantees proper fitment with factory mounts, correct cooperation with the accessory belt, and compliance with the vehicle's electrical system parameters.

Thanks to the use of appropriate part numbers and interchangeable numbers, this alternator can be used as a direct replacement for the factory-installed alternator, facilitating the selection of the correct component during repair or upgrade of the charging system.

Operating Parameters and Function in the Vehicle

The alternator with a current output of 155A provides sufficient power reserve for standard electrical equipment and additional consumers, such as advanced audio systems, heated seats, or extensive onboard electronics. Stable battery charging translates to:

• reliable engine starting in various operating conditions,
• proper functioning of electronic control units and modules,
• reduced risk of voltage drops under high electrical load.

A properly selected alternator is an important element for battery longevity and the trouble-free operation of the entire electrical system.

Condition, Origin, and Benefits of Choosing a Used Part

The offered alternator is a used part, sourced from a dismantled BMW vehicle. These types of OEM components are often chosen as a sensible alternative to cheaper, low-quality replacements because they retain factory operating parameters and proper fitment with engine accessories.

Choosing an original alternator from the aftermarket allows for reduced repair costs while maintaining high reliability and compatibility with the electrical system of a specific BMW model. This is a practical solution for both workshops specializing in the brand and for informed owners who maintain their vehicles themselves.

Application in the BMW Electrical System

The alternator plays a key role in powering all electrical consumers in the car – from basic systems like lighting and ignition to advanced comfort and safety modules. In BMW E60, E87, and E90 series vehicles, a correctly selected alternator is particularly important due to the extensive electronics and sensitive diagnostic systems.

Using original components in the charging system reduces the risk of errors in control units, incorrect dashboard readings, or problems with comfort systems. This is especially important in vehicles used daily, where stable power supply translates to driving comfort and safety.

If you are planning a comprehensive repair or upgrade of the engine area in your BMW and need other parts from the same group, such as alternators, generators, or related mounting components, check the available parts in the BMW Alternators and Generators category.

Additional Information and Technical Support

Before purchasing, it is advisable to compare the markings on your old alternator with the technical data of the offered alternator to confirm full compatibility with your specific engine version and vehicle equipment. If you have doubts regarding part selection or the cost-effectiveness of using dismantled components, specialized guide materials may be helpful.

If you are interested in the topic of conscious servicing of premium cars using original used parts, check out the article Luxury Within Reach – How to Service a Porsche Legend Using Proven Used Parts, which discusses a practical approach to selecting and operating aftermarket components.