Lamp Plug Mercedes ML W164 Rear Left N/S Light Socket Wiring 0375453526

The Mercedes ML W164 Left Rear Lamp Socket is an original lighting system component designed to serve the driver's side rear combination lamp. It ensures a secure electrical connection for the bulbs to the wiring harness, which translates to stable operation of the parking and brake lights and proper road signaling. This is a practical service solution for users who want to restore full lighting functionality without the costly replacement of the entire lamp.

Specifications and technical data

• SKU: A1648203964
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1648203964
• Substitutable numbers: A1648203964, A 164 820 39 64, A0375453526, A 037 545 35 26, KZ
• Location on the vehicle: Rear, Left
• Category: Rear Light Assemblies

Purpose and Function in the Lighting System

The presented rear lamp socket is specifically designed for installation in the Mercedes ML W164 generation, in the area of the left rear combination lamp. The component is responsible for:

• mechanically seating the bulbs in the lamp housing,
• transferring power from the vehicle's electrical system to individual light points,
• maintaining proper electrical contact during operation.

Thanks to this, the Rear Lights and Brake Lights system maintains correct operation, and the driver can be sure that the light signals are legible to other road users.

Connector and Harness Construction

The lamp socket is an integrated module with bulb holders and a section of wiring harness ending in an electrical connector. This design:

• facilitates the replacement of a damaged or overheated socket without interfering with the vehicle's main harness,
• reduces the risk of installation errors, as the pin layout and wire routing are factory-defined,
• ensures a repeatable electrical connection, consistent with the manufacturer's design.

This solution is particularly beneficial for common faults such as burnt contacts, loose bulb holders, or local wire damage near the lamp.

Benefits of Using an Original Lamp Socket

Using an original rear lamp socket in the Mercedes ML W164 offers a range of practical service benefits:

• Full Electrical Compatibility – the contact and wiring arrangement is matched to the vehicle's factory installation, minimizing the risk of installation errors.
• Stable Light Operation – proper current delivery to the bulbs reduces flickering, intermittent illumination, and lighting error messages.
• Restoration of Factory Functionality – replacing only the socket allows for restoring the lamp's functionality without needing to purchase a new lens or the entire module.

This solution is particularly recommended for repairs after collisions, electrical system modifications, or prolonged operation in harsh weather conditions.

Vehicle Placement and Installation Aspects

The component is designed for installation in the rear area, on the left side of the vehicle, in the combination lamp of the Mercedes ML W164 body. This specific vehicle placement simplifies selecting the correct component during repair – it eliminates the risk of mixing up sides or using an incorrect lamp variant.

In service practice, the socket is installed after removing the lamp from the body, following the sequence of disconnecting and connecting connectors. Thanks to the manufacturer-designed construction, this process is predictable and can be carried out under standard workshop conditions.

Part Selection by Numbers and Technical Support

The rear lamp socket for the Mercedes ML W164 has a dedicated OEM part number and associated interchangeable numbers, which facilitates precise identification in catalogs and service systems. When selecting, it is always advisable to compare the markings with the vehicle documentation or the removed part to ensure full compatibility.

If you are interested in a broader context of selecting used original parts by catalog and VIN numbers, practical tips, and examples can be found in the article: Audi's Five-Cylinder Engine – Legend and Selection of Used OEM Parts.

If you are planning a comprehensive repair or upgrade of the rear lighting area in your Mercedes and need other parts from the same group, such as combination lamps, light modules, or additional bulb holders, check the available parts in the category Mercedes Rear Lights and Brake Lights.