Mercedes W205 Front Door Harness Wiring Loom Left N/S Passenger Side A2055407167

The Left Front Door Harness for Mercedes W205 is a factory electrical installation component designed for the passenger side in right-hand drive versions. By maintaining the original wiring and connector architecture, it ensures a stable connection for all door receivers, facilitating professional repair or replacement of damaged wiring. This is a practical solution for workshops and owners who expect reliable integration with the factory electrical system.

Specifications and technical data

• SKU: RHD-A2055407167
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2055407167
• Substitutable numbers: A2055407167, A 205 540 71 67
• Location on the vehicle: Front, Left
• Category: Wiring, Harnesses & Connectors

Purpose and Fitment for Mercedes W205

The presented harness is part of the front left door electrical system for the Mercedes C-Class W205 generation. It is designed as an original electrical system component, which translates to:

• maintaining the factory wiring route within the door,
• compatibility with original connectors and modules in the door area,
• consistency with the factory body electrical architecture.

This allows for a technically correct repair without the need for modifications, soldering, or adapting universal wiring.

Function in the Door Electrical System

The door harness is responsible for transmitting signals and power between the body's electrical system and the components located within the door. In practice, this means it supports components such as:

• control of door mechanisms (e.g., actuators, drives, switches),
• signal wires for control modules in the door area,
• communication lines between the door and the rest of the vehicle.

A correctly selected, original harness helps maintain the stability of electrical systems and reduces the risk of communication errors within the vehicle's systems.

Characteristics of a Used Part

The offered harness is a used part from disassembly, which allows for the preservation of the original wiring and connector design while optimizing repair costs. A used part is a good solution when:

• the original harness has suffered mechanical damage or contact corrosion,
• a section of the wiring needs replacement after a collision or door intervention,
• maintaining compliance with the factory manufacturing standard is important.

A harness from disassembly allows for the restoration of the original wiring path without the need to reconstruct the entire circuit from scratch.

Professional Installation and Selection Based on Technical Data

To fully utilize the potential of this harness, installation by someone experienced with vehicle electrical systems in Mercedes vehicles is recommended. When selecting the part, it is advisable to use the vehicle's technical data and manufacturer markings, which facilitates:

• verification of compatibility with the specific body version and equipment,
• selection of the correct harness variant for the vehicle side and door location,
• avoidance of compatibility issues with control modules.

This ensures the harness can be integrated into the existing system in an organized manner, in accordance with the manufacturer's specifications.

Related Parts and Technical Knowledge

If you are planning a comprehensive repair or upgrade of the body's electrical system in your Mercedes and require other parts from the same group, such as additional door harnesses, wiring sections, or cooperating modules, check the available parts in the Mercedes Modules and Harnesses category.

When working with electrical systems, it is advisable to consult reliable sources of knowledge about the electronic components used. Practical tips on selection, compatibility, and installation can be found in the article Used Automotive Electronics Onboard – Why Choose Second-Hand ECUs and Sensors?, which discusses key aspects of working with aftermarket parts.