Alternator BMW E60 E63 E65 E83 LCI E90 Diesel 170A Generator 7799204

Alternator BMW E60 E63 E65 E83 LCI E90 Diesel 170A Generator is an original charging system component designed for BMW diesel engine vehicles. It provides a stable power supply for the electrical system and the battery, which is crucial for the proper operation of all onboard systems. This used generator is a sensible choice for professional repairs or replacing a faulty alternator in vehicles of this series.

Specifications and technical data

• SKU: 7799204-2
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7799204
• Substitutable numbers: 12317799204, 7799204, eM
• Fuel type: Diesel
• Category: Other Engine Parts

Purpose and function of the alternator

The alternator in BMW E60, E63, E65, E83 LCI, and E90 series models is responsible for converting mechanical energy from the crankshaft into electrical energy, which is necessary to power control units, safety systems, lighting, and comfort equipment. The 170A capacity version is designed for Diesel units, which require a stable and efficient power source due to extensive electronics and higher starting loads.

Selecting an alternator dedicated to a specific family of BMW diesel engines reduces the risk of insufficient charging, voltage drops, and errors in the vehicle's electronic systems.

Benefits of using an original BMW generator

Using an original generator in BMW vehicles ensures:

• factory fitment for engine mounts and accessories,
• proper cooperation with the voltage regulator and the vehicle's electrical system,
• appropriate charging characteristics for batteries used in diesel engines,
• maintenance of operating parameters specified by the vehicle manufacturer.

As a result, the alternator operates within the range intended by the charging system design, which promotes voltage stability and reduces the risk of premature wear of the battery and electronic components.

Application in BMW diesel models

The presented generator is intended for BMW vehicles from the E60, E63, E65, E83 LCI, and E90 families equipped with diesel engines. In practice, this means compatibility with popular diesel units used in these generations, where efficient charging is required when operating with numerous power consumers (injection systems, heating, comfort systems).

When selecting an alternator, it is worth paying attention to:

• fuel type – in this case Diesel,
• body generation (E60, E63, E65, E83 LCI, E90),
• compatibility with the factory engine accessory layout.

This approach facilitates trouble-free installation and proper cooperation with the vehicle's existing electrical system.

Characteristics of the used product

The alternator is offered as a used part, which allows for an economical repair of the charging system while maintaining the original manufacturer's specifications. Choosing a used OEM generator is often preferred over cheap replacements with uncertain parameters, as it ensures structural compliance and predictable performance during operation.

Before installation, it is recommended to perform a standard verification of the vehicle's electrical system, the condition of ground cables, and the battery to fully utilize the capabilities of a functional alternator and avoid secondary faults resulting from other system components.

Support with selection and additional information

If you are planning a comprehensive repair or upgrade of the engine area in your BMW and need other components from the same group, such as belt tensioners, pulleys, or accessory brackets, check the available parts in the Other BMW category.

For a comparison of solutions used in sports designs and a better understanding of the differences in drivetrain and braking system loads, it is worth reading an article discussing high-performance models – details can be found in the post Audi RS vs other models – what is hidden under the hood and chassis?.