Battery Cable Mercedes W205 W213 Starter Alternator Wiring Harness A2055402580

Mercedes W211 OM647 Starter Alternator Wiring Harness A2115401805 is an original electrical system component designed for professional servicing of the starting and charging system in Mercedes vehicles. This product from the Wires, Harnesses, and Connectors category ensures a stable connection between the starter and alternator, contributing to reliable engine starting and proper charging system operation. Thanks to its factory design, the harness is tailored to the electrical architecture of the OM647 unit, facilitating installation and minimizing the risk of errors.

Specifications and technical data

• SKU: rhd-A2055402580
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2055402580
• Substitutable numbers: A2055402580, A 205 540 25 80
• Category: Wiring Harnesses, Cables & Connectors

Purpose and Function in the Vehicle

The offered starter and alternator harness is responsible for safely routing power and signal wires between key engine electrical system components. In Mercedes models with the OM647 unit, it is responsible for:

• transferring starting energy to the starter motor,
• providing a stable connection for the alternator to the vehicle's electrical system,
• maintaining the correct wire routing within the engine bay,
• reducing voltage drops through appropriate length and wire gauge.

A component configured in this way ensures compliance with the factory electrical architecture, which is particularly important when servicing Mercedes vehicles, where diagnostic systems are sensitive to incorrect connections.

Construction and Design Advantages

This harness belongs to the Wires, Harnesses, and Connectors category, meaning it is designed as a complete installation solution, not a universal single wire. In practice, this translates to:

• factory-style wire routing along original mounting points,
• use of dedicated connectors matched to the starter and alternator,
• appropriate insulation designed for engine bay operation,
• maintaining the correct harness geometry, minimizing stress and abrasion.

This ensures an organized installation process and reduces the risk of mechanical or thermal damage to the wires. Factory compatibility with the Mercedes electrical system eliminates the need for modifications, soldering, or adapters.

Condition, Selection, and Vehicle Compatibility

This component comes from the Mercedes brand, guaranteeing adherence to parameters specified by the vehicle manufacturer. When selecting a harness for a specific vehicle, it is crucial to compare the OEM part number and any interchangeable numbers with the service documentation or the existing installation in the vehicle. This approach minimizes the risk of purchasing an incompatible component and simplifies subsequent installation.

If you wish to deepen your knowledge on verifying component compatibility using OEM numbers, practical methods for checking compatibility, and ways to avoid mistakes in online purchases, consult the advice provided in the article Risk-Free Online Parts Shopping – 5 Proven Ways to Verify Component Compatibility. This is particularly useful when working with the electrical system in Mercedes vehicles.

Application in the Mercedes Electrical System

The starter and alternator harness in the OM647 engine operates in a demanding environment – in close proximity to the power unit, where elevated temperatures, vibrations, and contact with other mechanical components are present. Using an original solution allows for:

• maintaining the correct path for starting current flow,
• ensuring stable battery charging,
• preserving correct interaction with factory diagnostic systems,
• reducing the risk of failures resulting from unprofessional installation modifications.

This is especially important in vehicles where starting reliability and consistent charging system performance parameters, typical of Mercedes designs, are crucial.

Expanding Mercedes Electrical System Service

If you are planning a comprehensive repair or upgrade of the engine area in your Mercedes and require other components from the same category, such as additional harnesses, power wires, or dedicated connectors, explore the available parts in the Mercedes Wires, Harnesses, and Connectors category.