BMW E82 E90 E91 E92 N54 135i 335i Alternator Generator 180A 7558220

BMW E82 E90 E91 E92 N54 135i 335i Alternator Generator 180A is an original charging system component from the Alternators and generators category, designed for BMW petrol engines with the N54 unit. This used OEM alternator ensures proper power supply to the vehicle's electrical system and stable battery charging under demanding operating conditions.

Specifications and technical data

• SKU: 7558220
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7558220
• Substitutable numbers: 12317558220, 7558220, 12317558219, 7558219, 7557789
• Fuel type: Petrol
• Category: Alternators & Generators

Application and compatibility

The presented alternator is designed for BMW 1 and 3 series models with the N54 engine, such as the 135i and 335i, powered by petrol. The OEM design guarantees a proper fit to factory mounts, correct operation with the accessory belt, and compatibility with the factory engine management system.

Thanks to the use of a 180A capacity alternator, the charging system is prepared to handle an extensive electrical installation, including comfort systems, safety systems, and additional power consumers typical for modern BMW models.

Operating parameters and benefits of installation

The 180A capacity alternator provides:

• stable battery charging under high electrical load,
• adequate power reserve for the vehicle's factory systems,
• proper cooperation with the N54 engine control electronics.

Choosing an original alternator from the Alternators and generators category reduces the risk of charging voltage issues, flickering lights, or errors in electronic systems. This is a particularly important solution in higher-power cars, where the electrical system load is significantly higher.

Product characteristics and condition

The offered item is used, which allows for an economical alternator replacement while maintaining the manufacturer's original specifications. This type of part is a good choice when you want to maintain the factory engine accessory configuration without having to use replacements with uncertain parameters.

Due to the original design, the alternator works with factory brackets, wiring, and control systems, which facilitates installation and reduces service time. This is a practical solution both for workshops specializing in the BMW brand and for conscious users who take care of their vehicle's technical condition themselves.

Part selection by number and brand

The alternator has a dedicated OEM part number and associated interchangeable numbers, which facilitates precise identification and selection of the correct component for a specific engine and body configuration. Combined with the BMW brand designation, this helps avoid ordering errors and ensures consistency with service documentation.

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 alternators with different capacities, power generators, or related mounting elements, check the available parts in the BMW Alternators and generators category.

Operation and service tips

When replacing the alternator in an N54 petrol engine, it is worth paying attention to the condition of the accessory belt, tensioner, and ground connections to fully utilize the capabilities of the newly installed component. A properly functioning charging system contributes to reliable starting, stable operation of electronics, and overall battery durability.

For users interested in broader diagnostics of power supply and injection systems in diesel engines, an article discussing the symptoms and consequences of injector failures may be helpful – you can find it here: Diesel injector failures – how to recognize them and the risks of neglecting them. Although it concerns diesel units, it allows for a better understanding of the importance of proper power supply and diagnostics in modern powertrains.