Mercedes S204 Bulb Holder Light Lamp Socket Rear Left N/S A2048202377

Mercedes S204 Bulb Holder Light Lamp Socket Rear Left N/S is an original rear lighting system component designed for installation on the left side of the vehicle. Thanks to its factory-spec geometry and precise fitment within the lamp assembly, the socket ensures stable bulb seating and a reliable electrical connection. It is a practical solution for users looking to restore full lighting functionality in their Mercedes without interfering with the vehicle's wiring harness.

Specifications and technical data

• SKU: A2048202377
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2048202377
• Substitutable numbers: A2048202377, A 204 820 23 77
• Location on the vehicle: Rear, Left
• Category: Light Bulbs & LEDs

Purpose and function of the rear bulb holder

The rear bulb holder in Mercedes models is responsible for the mechanical mounting of the light source and for a stable electrical contact connection with the vehicle's wiring. Located on the rear left side, the component operates in an area exposed to vibrations, temperature fluctuations, and moisture, which is why proper structural fitment has a direct impact on lamp reliability.

A properly selected socket minimizes the risk of flickering lights, intermittent power supply interruptions, and overheating of contacts. This is particularly important in vehicles equipped with lighting control systems that react to any change in resistance within the bulb circuit.

Design tailored to the Lamps and LED lights category

The product belongs to the Lamps and LED lights category, meaning it has been designed to work with modern lighting systems used in Mercedes vehicles. The socket ensures:

• precise bulb guidance in the socket,
• proper alignment of contacts relative to the installation connector,
• connection stability during vehicle operation.

This allows for maintaining correct light distribution and compliance with factory rear lamp parameters, which is significant for both safety and regulatory compliance.

Vehicle placement – rear left

The socket is intended for installation in the rear left part of the vehicle. Such precise determination of vehicle placement facilitates the selection of the correct component during repair or replacement of a damaged socket. Installation in the correct lamp eliminates issues with incompatibility regarding lens geometry, guides, or mounting sockets.

In practice, this means that when repairing lighting on the driver's side, this socket can be used as a direct replacement for the factory component, without the need to modify the lamp housing or electrical installation.

Product characteristics and condition

The rear bulb holder is offered as an aftermarket component, which allows for cost-effective lighting system repair while maintaining the original design. This type of solution is particularly beneficial for vehicles where replacing the entire lamp would be cost-prohibitive, and only the bulb mounting element has been damaged.

Using an original Mercedes socket promotes installation consistency and reduces the risk of issues with electronic system diagnostics responsible for lighting supervision.

Technical support and lighting selection

When working with the lighting system, it is worth paying attention to the selection of appropriate light sources and compatible installation components. For users who want to deepen their knowledge regarding the selection and replacement of lighting elements, including LED headlights and xenon systems, the following guide will be useful: See more and better – a complete guide to selecting and replacing used LED and Xenon headlights.

If you are planning a comprehensive repair or upgrade of the rear lighting zone in your Mercedes and need other elements from the same group, such as lamp modules, sockets, or components working with LEDs, check the available parts in the Mercedes Lamps and LED lights category.