Mercedes-Benz W169 W245 Alternator Generator Petrol 90A A2661540802

Mercedes-Benz W169 W245 Alternator Generator Petrol 90A is an original component from the Alternators and generators category, designed for petrol-powered systems. It ensures stable charging of the electrical system, which translates into reliable starting, proper operation of onboard electronics, and safe power supply for all electrical consumers in your Mercedes.

Specifications and technical data

• SKU: A2661540802
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2661540802
• Substitutable numbers: A2661540802, A 266 154 08 02
• Fuel type: Petrol
• Category: Alternators & Generators

Purpose and role in the electrical system

The presented alternator is dedicated to Mercedes W169 and W245 models with a petrol engine. Its task is to convert the mechanical energy of the engine into electrical energy, charge the battery, and power all key vehicle systems while driving.

Thanks to its 90A current efficiency, this component is suitable for cars equipped with extensive electrical systems – from basic consumers to more demanding comfort and safety systems.

Benefits of using an original alternator

Using an alternator matched to a specific generation of Mercedes allows you to maintain the factory parameters of the charging system. This means:

• stable voltage across the entire engine speed range,
• proper cooperation with control electronics and comfort modules,
• lower risk of electrical system overloads,
• maintenance of the charging characteristics specified by the manufacturer.

A properly selected alternator also reduces the risk of premature battery wear and unwanted voltage drops that can cause errors in electronic systems.

Performance and installation characteristics

The 90A petrol alternator for Mercedes W169 and W245 has been designed as a component structurally compatible with factory mounting points and the accessory belt drive system. This facilitates the mechanic's work and shortens replacement time, as it does not require any modifications or mounting adaptations.

As a part from the Alternators and generators category, it is adapted to work in the demanding conditions of the engine compartment – under variable temperatures, loads, and rotational speeds. A properly selected alternator helps maintain a balance between energy demand and the capabilities of the charging system, which is especially important in city traffic and when frequently using electrical consumers.

Product condition and practical application

The offered alternator is a used item, which is a beneficial solution for users looking for a technically sound component at a reasonable price. Choosing such a component allows for an economical repair of the charging system while maintaining the vehicle's original specifications.

It will work well both as a replacement in case of failure and for preventive alternator replacement in heavily used cars, where power stability is crucial for the reliability of the entire vehicle.

Charging system expansion and technical knowledge

If you are planning a comprehensive repair or upgrade of the engine area in your Mercedes and need other elements from the same group, such as additional generators, alternators with different capacities, or compatible accessory components, check the available parts in the Mercedes alternators and generators category.

For those interested in the conscious selection of used components and reducing the environmental impact of vehicle operation, a valuable supplement to your knowledge will be the article Eco-tuning in practice: how to increase performance while reducing your carbon footprint with recycled parts, which describes a practical approach to using reclaimed components.