Mercedes W204 Headlight Lamp Light Front Left N/S Plug Socket Wiring A0525455626

Mercedes W204 Headlight Lamp Light Front Left N/S Plug Socket Wiring is an original lighting system component designed for installation on the driver's side. As a product from the Front lights category, it ensures proper headlight connection, stable socket seating, and secure wire routing. Thanks to its factory design, it is a service-friendly solution that is technically matched to the vehicle's electrical system.

Specifications and technical data

• SKU: A2048200359-2
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2048200359
• Substitutable numbers: A2048200359, A 204 820 03 59, A0525455626, A 052 545 56 26
• Location on the vehicle: Front, Left
• Category: Headlight Assemblies

Purpose and function in the vehicle

The presented component is dedicated to installation in the front part of the body on the left side, where it is responsible for the stable connection of the headlight to the electrical system. The integrated socket and wire harness section allow for the correct transmission of signals to the lamp, which translates into the proper operation of low beam, high beam, or position lights – in accordance with the configuration used in a given Mercedes W204 unit.

The original geometry of the mounting and wire routing reduces the risk of stress, insulation abrasion, and electrical contact issues that often occur during unprofessional lighting system repairs.

Construction, connector, and wiring

The holder with the socket and a section of wiring has been designed as a factory installation element, which means:

• a body shape matched to the headlight and body structure,
• a factory electrical connector enabling secure lamp plugging,
• a properly routed wire harness, minimizing the risk of mechanical damage,
• maintenance of correct polarity and pin sequence within the socket.

Thanks to this, installation is carried out in an orderly manner, without the need for creating custom connectors, soldering wires, or using makeshift adapters that could reduce the reliability of the lighting system.

Service application and installation benefits

The element will prove particularly useful in situations where the factory socket has been damaged, contacts have melted, wires have been severed, or the holder has been mechanically damaged during a collision. Replacing the complete holder with the wiring allows you to:

• restore full functionality of the left headlight,
• reduce problems with flickering lights or intermittent power loss,
• maintain consistency of the installation with the original Mercedes service documentation,
• preserve aesthetics and order in the headlight housing.

The product comes from a used vehicle, which in practice means that it is an original Mercedes component with parameters consistent with factory specifications, while simultaneously serving as an economical alternative to new parts.

Selection and technical compatibility

To correctly select the holder with the socket and wiring for a specific Mercedes W204, it is worth verifying compatibility with your current lamp and vehicle equipment configuration. Comparing the shape of the connector, the number of pins, and the mounting method against the element currently installed in the car is helpful. Using the correct component allows you to avoid installation modifications and ensures stable operation of the front lighting system in the long term.

Condition and installation aspects

The offered element is used, which should be taken into account when planning service work. Before installation, a standard inspection of the condition of the contacts, wire insulation, and mechanical mounting points is recommended. A properly prepared holder with wiring allows for efficient repair and reduces vehicle downtime in the workshop.

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

For drivers interested in a broader approach to vehicle service – especially during major repairs that also include the drivetrain – a guide on diagnostics and selection of clutch components and dual-mass flywheels, available in the article Clutch and dual-mass flywheel – diagnostics and selection of parts for the drivetrain, may be helpful.