Alternator BMW F87 M2 F80 M3 F82 F83 M4 S55 Engine Generator 250A Denso 7848603

The BMW F87 M2, F80 M3, F82/F83 M4 S55 250A alternator is a high-performance current generator designed for sporty BMW models with the S55 gasoline engine. It offers a significant electrical power reserve, ensuring stable power supply to the vehicle's systems even during dynamic driving. This is the solution for drivers who expect reliable electrical system operation and compatibility with factory BMW electronics.

Specifications and technical data

• SKU: 7848603
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7848603
• Substitutable numbers: 7848603, 12317848603
• Fuel type: Petrol
• Category: Alternators & Generators

Intended Use and Compatibility

The 250A alternator is designed for the S55 engine in BMW F87 M2, F80 M3, and F82/F83 M4 gasoline models. Its construction meets factory requirements, ensuring proper interaction with control systems, safety systems, and the extensive onboard electronics typical of the M series.

Its high current output allows for seamless operation of consumers such as:

• S55 engine fuel injection and ignition systems,
• advanced stability and traction control systems,
• comprehensive multimedia and navigation systems,
• additional electrical equipment typical for M versions.

Operating Parameters and Electrical Characteristics

The 250A alternator provides an adequate power reserve for the 12V electrical system in vehicles with high energy demands. This solution minimizes the risk of voltage drops under heavy load, contributing to stable electronic operation and proper battery charging across a wide engine RPM range.

Selecting an alternator with these characteristics is particularly important in high-performance gasoline vehicles where numerous consumers operate simultaneously – from assistance systems to comfort features. This component from the alternators and generators segment for BMW has been developed to meet these demands without requiring any installation modifications.

Benefits of Use in BMW M Series

Using the 250A alternator in BMW F87 M2, F80 M3, and F82/F83 M4 models with the S55 engine offers a range of practical benefits:

• increased current reserve for standard and additional electrical consumers,
• improved voltage stability during dynamic driving and high RPMs,
• maintained proper interaction with factory BMW control units,
• a solution tailored to the characteristics of the S55 gasoline engine.

Consequently, this alternator is a functional choice for replacing a worn-out component in vehicles used for daily driving as well as under more demanding operating conditions.

Condition, Origin, and Practical Application

The offered alternator is from the group of original BMW components and is a used part, allowing for an economical restoration of the charging system's functionality while maintaining compatibility with factory solutions. This is a particularly beneficial option for owners of M series cars who wish to preserve the consistency of installed components with the original manufacturer's specifications.

Prior to installation, standard verification of the vehicle's electrical system and battery condition is recommended to fully utilize the potential of the 250A alternator and ensure trouble-free operation in the long term.

Other BMW Alternators and Generators, and Knowledge about Used Parts

If you are looking for other BMW alternators and generators compatible with specific models of this brand, please check our dedicated category: BMW alternators and generators. Here you will find a wide selection of components for various series and engine versions.

Want to learn more about how to safely choose premium used components and what to look for when purchasing? Read our guide article: used parts for Mercedes – original parts from dismantling, which discusses the practical aspects of buying original parts from the secondary market.