Battery Cable Mercedes W211 W219 Starter Alternator Wiring Harness A2195400807

The Battery Cable Harness for Starter and Alternator Mercedes W211/W219 is an original electrical system component designed for precise connection of the battery to the starter and alternator. Thanks to its factory fit for E-Class W211 and CLS W219 models, it ensures stable power supply to the starting system and proper charging operation, leading to more reliable engine starting and safer vehicle operation.

Specifications and technical data

• SKU: RHD-A2195400807
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2195400807
• Substitutable numbers: A2195400807, A 219 540 08 07
• Category: Wiring Harnesses, Cables & Connectors

Purpose and Function in the Electrical System

The presented Mercedes W211/W219 Battery Cable Harness belongs to a group of components responsible for transmitting high starting current and powering the onboard electrical system. It connects the battery terminal to the starter and alternator, forming the main power bus in the engine bay.

A correctly selected cable in this area is crucial for:

• efficient engine starting at various ambient temperatures,
• stable battery charging during alternator operation,
• limiting voltage drops in the high-current system,
• maintaining the safety of the electrical system's operation.

Construction and Fit for Mercedes W211 / W219

This harness falls into the category of Cables, Harnesses, and Connectors, meaning it is designed as a factory installation part, considering the original cable routing paths in the body. The appropriately selected length, cable cross-section, and connector placement allow for installation in existing brackets and guides without modifications.

This ensures:

• preservation of original mounting points in the engine bay,
• the cable is not subjected to excessive bending or stress,
• minimizing the risk of insulation abrasion against body parts or engine accessories.

Condition and Benefits of Using an Original Part

This component is from a Mercedes vehicle and is an original part, which helps maintain the integrity of the entire electrical system. Using a factory harness instead of aftermarket alternatives allows for maintaining current conductivity parameters at the level intended by the vehicle manufacturer.

The main advantages of using an original battery-starter-alternator cable include:

• precise fit for the specific body generation and powertrain,
• compliance with factory electrical schematics,
• reduced risk of starting problems resulting from incorrect cable cross-section or length.

Service Application and Prevention

Replacing the battery cable harness is particularly recommended in situations where symptoms such as difficult starting, occasional voltage drops, or signs of overheating at the connection terminals appear. Installing an original component restores the correct operating parameters of the starting and charging system without the need for intervention in other components.

In service practice, this cable is often replaced:

• during comprehensive high-current system maintenance,
• after starter or alternator repairs,
• as a preventative measure in older vehicles to reduce the risk of failure under demanding operating conditions.

Expanding Electrical System Work on Mercedes

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

Technical Support and Vehicle Development

If you are simultaneously considering improving your car's performance and want to better understand the relationship between a functional electrical system and engine tuning, it is worth referring to practical guide materials. The article How to Increase Engine Power: A Practical Guide to Engine Tuning with Used Parts may be helpful, as it discusses safe modifications using aftermarket parts step by step.