Mercedes ML W163 Rear Left N/S Tail Light Lamp Plug Socket Wiring A1638201964

The Left Rear Tail Light Bulb Holder for Mercedes ML W163 is an original lighting installation component designed for driver's side mounting. It ensures a stable seating for the bulbs and a secure connection to the electrical harness, which translates to efficient operation of the rear and brake lights and improved road safety. Thanks to its factory design, it is a part that perfectly matches the lamp's geometry and the vehicle's electrical system.

Specifications and technical data

• SKU: A1638201964-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1638201964
• Substitutable numbers: A1638201964, A 163 820 19 64
• Location on the vehicle: Rear, Left
• Category: Rear Light Assemblies

Purpose and Function of the Component

The presented bulb holder with a socket and a section of wiring is dedicated to the left rear lamp of the Mercedes ML W163 model. It is responsible for the mechanical mounting of the bulbs and their electrical connection to the vehicle's system, covering position lights, brake lights, and other functions provided in the specific lamp configuration.

This element belongs to the Rear Lights and Brake Lights category, therefore its proper functioning directly impacts the vehicle's visibility and the clarity of light signals for other road users.

Construction and System Fit

The design of the holder has been developed for the specific rear lamp of the Mercedes ML W163, ensuring:

• precise positioning of the bulbs relative to the reflectors and the lens,
• stable connection to the lamp's electrical harness,
• easy removal and installation during lighting service.

Thanks to its factory design, the holder works with the original lamp and the intended type of connectors, facilitating the hassle-free replacement of a damaged module without the need for system modifications.

Service Application and Benefits of Replacement

The bulb holder with socket and wiring harness section is particularly useful in situations where the lamp exhibits:

• intermittent operation of brake or position lights,
• signs of contact overheating or burnt-out bulb sockets,
• damage to wires near the lamp, e.g., after a collision or moisture ingress.

Replacing the complete holder with wiring often allows for faster and more effective fault resolution than repairing individual wires or contacts. This service solution minimizes the risk of recurring lighting problems in the short term.

Characteristics of a Used Product

The offered element is a used part obtained from disassembly. This means it is an original component that has already been in operation in a vehicle but is still suitable for further use. For many users, this is a beneficial solution as it allows for maintaining the consistency of the lighting system with factory standards while reducing repair costs.

Compatibility and Part Selection

To correctly select the bulb holder with wiring for your Mercedes ML W163, pay attention to:

• vehicle placement – rear, left side,
• compatibility with the specific version of the rear lamp,
• the type of connectors used in the vehicle's system.

Choosing the correct element helps avoid installation problems and ensures proper cooperation with the existing electrical system.

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 complete tail lights, bulb modules, or additional sockets, check the available parts in the Mercedes Rear Lights and Brake Lights category.

For drivers interested in a broader vehicle upgrade, including the powertrain, a guide on selecting and operating transmissions may be helpful – you can find more practical information in the article Gearbox: Manual, Automatic, or DSG – Common Faults and a Used Gearbox Buying Guide.