Interior Light Mercedes ML W166 Roof Lamp Rear Right O/S A1668200401

The Mercedes ML W166 Rear Right Interior Dome Light is an original part from the Cabin Lighting group, designed for installation in the rear of the roof on the passenger side. This practical solution enhances the comfort of rear passengers by providing even illumination of the space and maintaining a factory-standard interior appearance.

Specifications and technical data

• SKU: A1668200401
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1668200401
• Substitutable numbers: A1668200401, A 166 820 04 01
• Location on the vehicle: Rear, Right
• Category: Interior Light Assemblies

Vehicle Application and Placement

The presented dome light is designed for installation in the rear of the headliner, on the right side of the vehicle. This placement provides directional lighting for rear passengers without dazzling the driver, while maintaining ergonomic usability.

Thanks to its precise fit to the headliner and factory mounting points, this component ensures a cohesive interior aesthetic and correct electrical installation according to the manufacturer's specifications.

Technical and Functional Characteristics

The dome light is part of the Cabin Lighting system and works with the vehicle's factory electrical installation. Its design is intended for integration with the existing wiring harness, which simplifies installation and minimizes the need for electrical modifications.

• dedicated placement in the rear roof area on the right side,
• designed for factory sockets and clips in the headliner,
• consistent styling with other interior lighting elements.

This solution preserves the original character of the cabin while providing convenient access to lighting for rear seat passengers.

Original Origin and Fit for Mercedes ML W166

As a component designed for the Mercedes ML W166, the dome light is structurally adapted to this model in terms of shape, mounting method, and electrical compatibility. Factory fitment minimizes the risk of installation issues and eliminates the need for modifications to upholstery or brackets.

Original origin also ensures a uniform illumination color and button styling consistent with other interior lighting elements, which is important for both aesthetic and functional reasons.

Condition of the Part and Benefits of Choosing a Used Part

The offered dome light is a used part, allowing for an economical replacement of a damaged or malfunctioning component while maintaining the original manufacturer's specifications. This solution is particularly beneficial for vehicle repairs where maintaining factory equipment without the cost of purchasing a new component is important.

Choosing a used part from this group offers a sensible compromise between cost and maintaining proper fit, build quality, and compatibility with other interior components.

Expanding and Modernizing Mercedes Interior Lighting

If you are planning a comprehensive repair or modernization of the interior lighting area in your Mercedes and need other parts from the same group, such as dome lights, door panel illumination, or footwell lighting, check the available parts in the Mercedes Cabin Lighting category.

More on Selecting Used Lighting Components

When working with lighting systems, it is worth paying attention to the compatibility of the components used and their impact on driving comfort and safety. If you want to expand your knowledge on selecting and replacing used lighting elements, including headlights and accessories, the article will be helpful: See More and Better – A Complete Guide to Selecting and Replacing Used LED and Xenon Headlights.

If you are interested in a broader approach to purchasing used parts and want to better plan your repair budget, also check out the guide: Used Parts – Your Guide to the Best Offers in the Automotive Store, where you will find practical tips for making informed choices about used components.