Battery Cable Mercedes W204 W207 Starter Alternator Wiring Harness A2075400710

The Mercedes W204/W207 Battery Cable Harness to Starter and Alternator is an original electrical system component designed for precise connection of the battery to the starting and charging system. Thanks to its factory geometry and appropriately selected cable cross-sections, it ensures stable starter power supply and reliable connection to the alternator, which translates to dependable operation of the electrical system in your Mercedes.

Specifications and technical data

• SKU: rhd-A2075400710
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2075400710
• Substitutable numbers: A2075400710, A 207 540 07 10, KD
• Category: Wiring Harnesses, Cables & Connectors

Vehicle Application and Function

This harness belongs to the Cables, Harnesses, and Connectors group and is responsible for transmitting starting current from the battery to the starter and supplying power to the alternator in Mercedes W204 and W207 class vehicles. A correctly selected battery cable is crucial for:

• efficient engine starting under various operating conditions,
• stable alternator operation and proper battery charging,
• minimizing voltage drops in the main power circuit.

The original design of the harness allows for maintaining the factory routing of cables in the engine compartment, which facilitates installation and minimizes the risk of chafing or overheating.

Construction and Technical Features

The battery cable harness for the starter and alternator has been specifically designed for the Mercedes electrical system, taking into account current loads and thermal conditions in the engine compartment. The implemented solutions include, among others:

• heavy-duty cables with appropriately selected cross-sections for starting current,
• factory eyelet terminals and connectors matched to the vehicle's connection points,
• insulation adapted for operation at elevated temperatures and in the presence of engine compartment contaminants,
• harness routing consistent with the original mounting and bracket system.

This configuration reduces the risk of overheating, sparking, and undesirable voltage drops, which is particularly important in modern electrical systems.

Condition, Selection, and Application

The item is offered as a used part, allowing for economical repair of the power supply system while maintaining the original manufacturing quality characteristic of the Mercedes brand. Before installation, it is recommended to verify compatibility with the specific engine version and year of the vehicle, as well as to check the condition of the ground points and battery terminals.

To correctly select the harness for your car, pay attention to:

• compatibility with the body generation (W204, W207),
• cable routing in the engine compartment,
• the type of connectors and terminals used at the starter and alternator.

Benefits of Using an Original Harness

Using a factory battery cable harness instead of aftermarket or non-original parts brings tangible operational benefits. The most important include:

• stable starting system operation due to proper cable cross-section and low voltage drops,
• reliable battery charging due to correct connection of the alternator to the vehicle's system,
• better resistance to under-hood conditions compared to universal cables,
• easier installation due to maintaining the original harness length and shape.

A harness configured in this way helps to reduce starting problems, flickering lights, or unstable voltage in the system, which is especially important in vehicles equipped with extensive electronics.

Mercedes Electrical System Expansion

If you are planning a comprehensive repair or modernization of the engine area in your Mercedes and need other components from the same group, such as additional harnesses, power cables, or system connectors, check the available parts in the Mercedes Cables, Harnesses, and Connectors category.

For drivers who are simultaneously analyzing the drivetrain system and considering a gearbox replacement, a practical guide may be helpful – you can find more information in the article Gearbox: Manual, Automatic, or DSG – Common Faults and Used Gearbox Purchase Guide.