Mercedes W205 Battery Cable Alternator Wiring Harness A2054402336

Visual condition of the part

The product shows signs of use visible in the photos.

Mercedes W205 Battery Cable Alternator Wiring Harness is an original electrical system component belonging to the Cables, wiring harnesses, and connectors group. Designed specifically for the W205 platform, this used wiring harness ensures a proper connection between the alternator and the vehicle's power supply system, supporting stable operation of the charging system and the vehicle's electrical safety.

Specifications and technical data

• SKU: rhd-A2054402336
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2054402336
• Substitutable numbers: A2054402336, A 205 440 23 36
• Category: Wiring Harnesses, Cables & Connectors

Purpose and function in the electrical system

The offered Mercedes W205 Battery Cable Alternator Wiring Harness is a component responsible for transferring electrical energy between the alternator and the vehicle's power supply system. A correctly selected cable in this section is crucial for:

• maintaining stable battery charging voltage,
• limiting voltage drops in the high-current circuit,
• safely dissipating loads generated by the alternator,
• maintaining the correct operation of electrical consumers in the vehicle.

Thanks to a design consistent with Mercedes factory standards, the wiring harness is matched to the geometry of the W205 engine bay, which facilitates cable routing and minimizes the risk of chafing or incorrect positioning.

Construction and advantages of the original Mercedes wiring harness

As an element from the Cables, wiring harnesses, and connectors group, the product utilizes factory solutions applied by the vehicle manufacturer. This includes:

• dedicated terminals and connectors matched to the alternator and vehicle installation,
• insulation adapted for operation in the elevated temperatures of the engine bay,
• factory mounting points and cable routing paths,
• cable cross-section selected for the current loads of the charging system.

The original wiring harness ensures consistency with the factory electrical architecture of Mercedes, which reduces the risk of compatibility issues typical of random replacements with uncertain parameters.

Condition, fitment, and service application

The item is offered as a used part, which allows for an economical repair of the charging system while maintaining the manufacturer's original specifications. This type of wiring harness is particularly useful in situations where:

• mechanical damage to the cable has occurred (chafing, melting, insulation cracks),
• voltage drops or unstable charging resulting from cable wear are present,
• it is necessary to replace a section of the installation after body or engine repairs.

Using an original component from the same model platform facilitates installation and allows for maintaining the factory routing of the harness, which is important for both reliability and subsequent service maintenance.

Benefits of choosing original Mercedes cables and wiring harnesses

By choosing this Mercedes W205 Battery Cable Alternator Wiring Harness, you gain:

• a component designed specifically for the Mercedes W205 construction,
• compliance with factory electrical diagrams,
• reduced risk of overheating and overloads due to the correct cable cross-section,
• easier diagnostics and service thanks to the use of original connectors.

For workshops and users, this means more predictable installation and stable operation of the charging system after the repair is completed.

If you are planning a comprehensive repair or upgrade of the electrical installation area in your Mercedes and need other elements from the same group, such as power cables, engine bay wiring harnesses, or installation connectors, check the available parts in the Mercedes cables, wiring harnesses, and connectors category.

For users who pay attention to the environmental aspect and want to combine vehicle service with a responsible approach to resources, we recommend the article Sustainable automotive – how original used parts support ecology, which explains why choosing dismantled parts can reduce your carbon footprint and represent a technically sound choice.