Mercedes W205 Rear Axle Suspension Cable Wiring Harness Right O/S A2055404206

Mercedes W205 Rear Axle Suspension Cable Wiring Harness Right O/S is an original electrical installation component designed for the right side of the rear body section. It ensures a stable electrical connection between sensors, suspension components, and the vehicle's main wiring system, which translates into the proper operation of comfort and safety systems. Thanks to its factory fit for the W205 platform, the harness allows for precise installation without the need for any modifications to the wiring.

Specifications and technical data

• SKU: A2055404206
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2055404206
• Substitutable numbers: A2055404206, A 205 540 42 06
• Location on the vehicle: Rear, Right
• Category: Other Starters, Alternators, ECUs & Wiring

Purpose and placement in the vehicle

The presented harness is an electrical installation component dedicated to the rear axle on the right side in Mercedes C-Class W205 generation models. It is responsible for routing signals and power to components operating in the suspension area, such as position sensors or control elements, which is crucial for the correct operation of systems monitoring the vehicle's behavior on the road.

Placement in the rear part of the body on the right side requires the use of a harness with an appropriately selected length, routing shape, and connector layout. Using an original component allows for maintaining the factory wire routing, minimizing the risk of chafing, tension, or incorrect positioning in relation to suspension elements.

Construction and technical function

The rear axle suspension harness in the Mercedes W205 has been designed as an integrated section of the installation that connects several electrical points into one coherent circuit. The wires used are selected based on current load and operating conditions in the chassis, where variable temperatures, moisture, and exposure to road contaminants occur.

Key design features of this harness include:

• a dedicated routing matched to the geometry of the rear axle on the right side,
• connectors compatible with factory sockets in the Mercedes W205,
• wire covers adapted for operation in the chassis zone.

As a result, this component can be integrated into the existing installation without the need to interfere with the vehicle's original electrical architecture, which is particularly important for maintaining proper diagnostics and communication between control modules.

Service application and installation benefits

The rear axle harness on the right side is primarily used for repairs related to mechanical or electrical damage in the chassis area, e.g., after collisions, wire corrosion, or suspension interventions. Using an original Mercedes component helps reduce the risk of compatibility issues and errors in traction control, stabilization, or leveling systems.

The main benefits of using this harness include:

• restoration of the factory continuity of the electrical installation in the rear of the vehicle,
• maintaining proper communication between suspension sensors and control units,
• reducing the risk of error codes appearing in the onboard system memory after repair.

The element from the Other category plays an important auxiliary role in the entire suspension system, enabling the proper cooperation of the vehicle's mechanics with its electronics.

Part selection and vehicle compatibility

To correctly select a harness for a specific Mercedes W205, it is worth paying attention to compatibility with the body version and suspension configuration. The product has manufacturer markings and reference numbers that facilitate verification of compatibility with a specific vehicle. In case of doubt, verification by VIN or consultation with a service center specializing in the Mercedes brand is recommended.

As a used element, the harness may come from vehicle dismantling, which in practice means maintaining the original factory specification while reducing repair costs compared to purchasing a new part. This is a solution often chosen for comprehensive work in the rear axle area, where several elements are replaced simultaneously.

System expansion and additional materials

If you are planning a comprehensive repair or upgrade of the rear axle zone in your Mercedes and need other elements from the same group, such as additional harnesses, connectors, or installation sections routed in the suspension area, check the available parts in the Other Mercedes category.

For users interested in comparing technical solutions used in sports versions of cars with advanced suspension and brake systems, an article discussing structural differences in high-performance vehicles may be helpful – details can be found in the post Audi RS vs other models – what is hidden under the hood and chassis?.