BMW 3 Series E90 E91 LCI N57 Diesel Cable Alternator-Starter-Base B 7800161

The BMW E90 E91 LCI N57 Diesel Alternator Cable is a used, original electrical component designed for the facelifted BMW 3 Series with the N57 diesel engine. The cable ensures a stable connection between the alternator and the vehicle's electrical system, ensuring proper battery charging and safe operation of the electronic systems.

Specifications and technical data

• SKU: 7800161
• Mark: BMW
• Condition: Used
• OEM Part Number: 7800161
• Substitutable numbers: 12427800161, 7800161, AS
• Fuel type: Diesel
• Category: Clutch Cables

Designed for and fitment to BMW E90 / E91 LCI N57

The BMW E90 E91 LCI N57 Diesel alternator cable is designed with the specific engine and electrical system configurations in mind. Proper routing, length, and connector terminations ensure proper alignment within the engine compartment and a secure connection to the alternator and other system components.

The component comes from a diesel vehicle, meaning it is designed to handle the current loads typical of N57 units, including operation with extensive on-board electronics and comfort equipment.

Technical and functional characteristics

The cable plays a key role in the charging system – it's responsible for the safe and stable transfer of electrical energy from the alternator to the vehicle's electrical system. Its design, based on a conductor with an appropriate cross-section and temperature- and vibration-resistant insulation, allows for:

• efficient battery charging under typical diesel engine operating conditions,
• stable power supply to electrical receivers while driving,
• reducing voltage drops and the risk of overheating connections.

The used alternator cable, sourced from the original BMW system, retains factory fit parameters for the installation, making installation easier and minimising the risk of compatibility issues.

Condition, origin and benefits of choosing used cable

The offered item is in used condition, meaning it has been previously used but is still suitable for use after proper inspection. This type of part is particularly attractive to users who:

• are looking for an economical solution while maintaining the original BMW design,
• want to avoid mismatches that can occur with substitutes of uncertain origin,
• prefer factory electrical components designed specifically for a given model.

The cable comes from a vehicle with limited mileage, which helps maintain the proper condition of the insulation and connection terminals, provided it is properly installed and operated.

Why is it worth choosing the original BMW alternator cable?

Every component in the charging system is important – from the alternator, to the cables, to the ground points. Using the original alternator cable in a BMW E90 / E91 LCI with the N57 engine allows for:

• maintain the consistency of the electrical installation with the manufacturer's factory specifications,
• reduce the risk of charging problems, error messages and unstable voltage,
• maintain correct wiring harness routing in the engine compartment, which reduces abrasion and mechanical damage.

This is particularly important in modern BMW diesels, where the electrical system works with advanced engine control, comfort and safety systems.

Other BMW clutch cables and knowledge about used drive components

If you're looking for other BMW clutch cables tailored to different BMW models, check out our dedicated BMW clutch cables category. There, you'll find a wide selection of clutch control components, tailored to specific generations and engine versions.

When planning to purchase used drivetrain components or related components, it's worth expanding your knowledge on how to assess their condition. Practical tips can be found in the guide: Second-Hand Differentials – What You Should Know About Used Differentials, Sensors, and Drivetrains , which will help you make informed decisions when choosing used parts.