Alternator BMW Z4 E89 23i 30i N52N Alternator Denso 170A 14V 7552815

Alternator BMW Z4 E89 23i 30i N52N Alternator Denso 170A 14V is an original component from the Alternators and generators group, designed for the BMW Z4 E89 powertrain with the N52N engine in 23i and 30i versions. This solution ensures a stable power supply for the vehicle's electrical system and proper battery charging under demanding operating conditions.

Specifications and technical data

• SKU: 7552815-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7552815
• Substitutable numbers: 7552815, 12317552815
• Category: Alternators & Generators

Purpose and compatibility

The presented alternator is structurally matched to the N52N engines used in the BMW Z4 E89 in 23i and 30i variants. This ensures correct mounting geometry, proper drive ratio, and operating parameters consistent with the manufacturer's factory specifications.

The alternator operates in a 14-volt system and is designed to work with the extensive onboard electronics characteristic of modern BMW models, which translates into stable power supply for control units, comfort systems, and additional equipment.

Technical characteristics and design

The Denso alternator from this series belongs to a group of high-efficiency generators, which allows for effective battery charging even under higher electrical loads. The applied design ensures:

• current output properly matched to N52N engines,
• stable output voltage in a typical 14 V system,
• compatibility with the factory charging control system in BMW.

Design solutions used by Denso promote smooth operation and limit voltage drops, which is important during intensive use of electrical equipment and frequent city driving.

Application in the BMW Z4 electrical system

The alternator plays a key role in powering all electrical consumers in the BMW Z4 E89 – from basic engine systems and lighting to comfort features. A correctly selected generator:

• ensures reliable starting thanks to proper battery charging,
• stabilizes the operation of onboard electronics,
• reduces the risk of voltage drops and associated system errors.

For users, this means more predictable vehicle behavior and a lower risk of failures related to insufficient charging.

Condition, origin, and benefits of choosing

The offered alternator is a used component, originating from the original BMW production line, which helps maintain the factory operating parameters of the charging system. Choosing an original component from this group allows for maintaining compliance with factory specifications without the need for installation modifications.

An additional advantage is the presence of the OEM part number and available replacement numbers in the technical specification, which facilitates verification of compatibility with a specific vehicle configuration before installation. This is a practical solution for workshops and users selecting electrical system components themselves.

BMW alternators and generators – expansion and service

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 additional generators, alternators with different output, or compatible mounting components, check the available parts in the BMW alternators and generators category.

If you are interested in the broader context of using used components in premium segment cars and want to better understand how to combine savings with maintaining the appropriate technical standard, it is worth reading the article: Used car parts for Mini Cooper – a way for style and savings.