Mercedes GL X166 Rear Interior Roof Light Lamp Black A1668200223

Mercedes GL X166 Rear Interior Roof Light Lamp Black is an original component from the Interior lighting group, designed specifically for the rear passenger compartment. Thanks to its factory design, it ensures a consistent headliner appearance, precise fitment, and comfortable illumination of the rear interior zone.

Specifications and technical data

• SKU: A1668200223
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1668200223
• Substitutable numbers: A1668200223, A 166 820 02 23
• Location on the vehicle: Rear
• Color: Black
• Category: Interior Light Assemblies

Purpose and function in the vehicle

The presented rear roof light is dedicated for installation in the rear part of the cabin, in the headliner of the Mercedes GL X166 generation model. It is responsible for uniform illumination of the rear passenger space, improving visibility when entering, exiting, and using the interior after dark. As an original part, it maintains full compatibility with the electrical system and the interior styling of this model.

Construction, color, and interior integration

The lamp features a design adapted to the rear part of the headliner, with a properly shaped housing allowing for stable mounting in the factory opening. The black color of the housing allows for aesthetic integration into dark interior finishes, maintaining consistency with other upholstery elements and roof panels. The arrangement of the light sources and the lens has been designed to reduce glare and provide comfortable, diffused lighting.

Benefits of using original interior lighting

Choosing an original rear roof light for the Mercedes GL X166 allows you to maintain the factory finish standard and the proper operation of the interior lighting system. The main advantages of this solution include:

• secure fitment to the headliner and mounts in the rear of the cabin,
• consistent color scheme with other interior elements,
• proper cooperation with factory switches and lighting logic,
• maintaining the original character and ergonomics of the passenger cabin.

As an element from the Interior lighting category, the lamp directly affects the comfort of using the vehicle, making it easier to use the rear part of the interior in low-light conditions.

Condition, application, and part selection

The offered rear roof light is a used part, which allows for an economical replacement of a damaged or non-functional component while maintaining the manufacturer's original specifications. This is a practical solution both for standard repairs and for restoring the completeness of interior equipment after previous disassemblies.

When selecting an interior lighting element for the Mercedes GL X166, it is crucial to verify compatibility with the specific equipment version and placement in the vehicle (rear part of the headliner). This ensures that the installation proceeds smoothly and the lamp retains full functionality within the existing system.

Expanding lighting upgrades and technical knowledge

If you are planning a comprehensive repair or upgrade of the interior lighting zone in your Mercedes and need other elements from the same group, such as roof lights, spot lights, or ambient lighting modules, check the available parts in the Mercedes Interior lighting category.

When working with lighting, it is worth paying attention to the general principles of selecting and operating light components in a car. Practical tips on choosing used lighting components, their diagnostics, and their impact on safety can be found in the article See more and better – a complete guide to selecting and replacing used LED and Xenon headlights, which helps organize knowledge about original lighting elements.