Mercedes W204 Headlight Xenon Front Right O/S Plug Wiring Socket A0525455626

Mercedes W204 Headlight Xenon Front Right O/S Plug Wiring Socket is an original headlight electrical installation component designed for installation on the passenger side. Thanks to its precise fit to the factory xenon headlight design, it ensures a stable electrical connection and safe operation of the lighting system. It is a practical solution when replacing a damaged connector or repairing the wiring within the right headlight.

Specifications and technical data

• SKU: A2048203839-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2048203839
• Substitutable numbers: A2048203839, A 204 820 38 39, A0525455626, A 052 545 56 26
• Location on the vehicle: Front, Right
• Category: Headlight Assemblies

Purpose and function in the lighting system

The presented wiring harness is a component from the Front lights category, responsible for the electrical connection of the xenon headlight to the vehicle's installation. The placement on the vehicle is the front right side, which allows for unambiguous identification when selecting parts for a specific Mercedes W204 unit.

This component is responsible for:

• stable power supply to the xenon module and other headlight functions,
• reliable transmission of control signals,
• mechanically secure locking in the lamp socket, reducing the risk of looseness and circuit interruption.

Connector construction and technical aspects

The xenon headlight socket wiring harness has been designed as a dedicated Mercedes electrical installation component, with a properly shaped plug and wire routing. The connector geometry is matched to the lamp housing, which facilitates correct seating and minimizes the risk of incorrect connection.

The plug-in solution allows for:

• quick removal of the old socket and installation of a functional component,
• maintaining factory tightness and protection against moisture within the headlight area,
• maintaining the correct wire sequence without the need to interfere with the vehicle's main wiring harness.

Benefits of using an original Mercedes wiring harness

Using an original component dedicated to the Mercedes W204 allows for maintaining the consistency of the electrical installation and the operating parameters of the lighting system. Factory fitment reduces the risk of module communication problems, dashboard errors, or unstable xenon operation.

Key advantages include:

• compliance with the vehicle's factory electrical architecture,
• no need for installation modifications or the use of adapters,
• easier diagnostics of potential faults in the future.

Condition, service application, and part selection

The offered wiring harness comes from dismantling and is marked as a used original Mercedes component, which is a cost-effective solution for xenon headlight repairs in vehicles used on a daily basis. It works well both for replacing a damaged socket and for reconstructing the installation after a collision in the front right part of the body.

When selecting, it is worth paying attention to:

• compatibility with the xenon headlight version used in a given unit,
• placement on the vehicle – front, right side,
• intended for a specific generation of Mercedes W204.

If you are planning a comprehensive repair or upgrade of the front lighting zone in your Mercedes and need other components from the same group, such as complete headlights, control modules, or additional wiring harnesses, check the available parts in the Mercedes Front lights category.

For drivers interested in improving ergonomics and driving comfort, it is also worth considering upgrading the vehicle's interior – you will find more practical tips in the article Interior metamorphosis: how branded seats from dismantling improve comfort and car value.