Mercedes ML W166 Rear Lamp Side Panel Tail Light Lamp Left N/S A1669063301

Visual condition of the part

The product shows signs of use visible in the photos.

Mercedes ML W166 Rear Lamp Side Panel Tail Light Lamp Left N/S is an original component from the Rear lights and brake lights group, designed for installation in the rear side section of the vehicle body. Thanks to its factory design, it ensures a consistent look with the other lamps, proper light distribution, and compatibility with factory electrical installations. It is a practical solution when replacing a damaged lighting module after a collision or due to operational wear.

Specifications and technical data

• SKU: A1669063301
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1669063301
• Substitutable numbers: A1669063301, A 166 906 33 01
• Location on the vehicle: Rear, Left
• Category: Rear Light Assemblies

Purpose and vehicle placement

The presented lamp is designed for installation in the rear part of the vehicle, on the left side. Its placement in the side body panel means it is responsible for the vehicle's visibility from the rear and side, working in conjunction with the other lighting elements in the tailgate. This solution is characteristic of the Mercedes ML W166 SUV design and allows for maintaining the correct lighting geometry and readability of light signals for other road users.

Function in the Rear lights and brake lights system

The lamp plays a key role in the Rear lights and brake lights system, being responsible for:

• proper marking of the rear edge of the vehicle during night driving,
• cooperation with the brake light module to signal braking,
• maintaining consistent light color and intensity with the other rear lamps,
• maintaining compliance with Mercedes factory safety standards.

Thanks to the original optics design and appropriate division of light chambers, the lamp ensures clear, uniform illumination, which translates into good vehicle visibility in various road conditions.

Product characteristics and condition

The item comes from a used vehicle, which means it is a used part that retains the functionality required for further operation in the lighting system. This type of component is particularly attractive to users looking for factory fitment and compatibility while optimizing repair costs. Its original origin facilitates trouble-free installation in place of a damaged lamp, without the need for modifications to the installation or mounts.

Benefits of using an original rear lamp

Using an original rear side lamp in a Mercedes ML W166 allows for maintaining the stylistic and technical consistency of the entire lighting system. The most important advantages include:

• Factory fitment – compatibility of shape, mounting points, and electrical connectors with the ML W166 body structure.
• Stable lighting parameters – proper light distribution and intensity, in accordance with the manufacturer's specifications.
• Seamless integration with vehicle electronics – cooperation with light control systems and on-board diagnostics.
• Aesthetic appearance – maintaining the original body line and visual consistency of the rear part of the vehicle.

Application in service practice

This rear side lamp is a suitable choice for post-accident repairs, replacing elements after mechanical damage, or restoring full functionality to the lighting system in a Mercedes ML W166. Thanks to its original design, it shortens service time and reduces the risk of fitment issues. This solution is particularly beneficial for workshops specializing in the Mercedes brand and users who care about maintaining the vehicle's factory standards.

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 light modules, additional lamps, or brake light segments, check the available parts in the Mercedes Rear lights and brake lights category.

For drivers interested in further developing their car, including improving performance using aftermarket components, a guide dedicated to safe tuning may be helpful – more information can be found in the article How to increase engine power: a practical guide to engine tuning with used parts.