Mercedes W166 Brake Light Rear Third Additional Stop Lamp A1668200056

Visual condition of the part

The product shows signs of use visible in the photos.

Mercedes W166 Brake Light Rear Third Additional Stop Lamp is an original component from the Main and center brake lights group, designed for installation in the rear part of the vehicle body. It provides clear, highly visible braking signaling, improving vehicle safety and signal readability for drivers behind you. This solution is particularly valued during intensive vehicle use, where stable lighting system performance is crucial.

Specifications and technical data

• SKU: A1668200056
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1668200056
• Substitutable numbers: A1668200056, A 166 820 00 56
• Location on the vehicle: Rear
• Category: Centre & Third Brake Light Assemblies

Purpose and function of the third brake light

The presented third additional brake light has been designed specifically for W166 series models, with the intention of being mounted in the rear zone of the vehicle. As an element positioned higher than standard lamps, it improves the visibility of the braking signal in city traffic and on the road, especially in situations of limited visibility. As a result, drivers behind the vehicle react faster to braking, which reduces the risk of rear-end collisions.

Construction and vehicle fitment

The original brake light design for the W166 is prepared for integration with the factory Mercedes lighting system. The shape and mounting method are adapted to the rear part of the body, which facilitates installation and allows for maintaining a consistent vehicle appearance. Using a dedicated component from the same product group guarantees proper fitment with the trunk lid or the rear part of the bodywork, as well as correct routing of electrical installation cables.

Performance characteristics and advantages

The third additional brake light plays an important role in daily vehicle operation, especially in heavy traffic. Key benefits include:

• increased readability of the braking signal for vehicles behind,
• better vehicle visibility in rain, fog, or night driving conditions,
• consistency with the factory Mercedes lighting system,
• preservation of the original styling line of the rear bodywork.

As an item from the Main and center brake lights category, the product supports maintaining full functionality of the lighting system, which is important for both safety and compliance with traffic regulations.

Component condition and service application

The offered third brake light is a used component, making it an attractive service solution for post-accident repairs, replacing a damaged lamp, or restoring full lighting system efficiency. Choosing an original component allows for maintaining proper operating parameters while reducing costs compared to new parts.

Use in repairs and upgrades

The component will work well both for standard replacement of a damaged light and for comprehensive work in the rear part of the body involving the lighting system. Properly matching the component to a specific W166 model facilitates installation and minimizes the risk of electrical or mechanical compatibility issues. This is a practical solution for workshops, service centers, and users who independently maintain the technical condition of their Mercedes.

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 main brake lamps, center lights, or additional signaling modules, check the available parts in the Main and center brake lights Mercedes category.