Mercedes SLK R172 Third Brake Stop Light Lamp A1728200056

Visual condition of the part

The product shows signs of use visible in the photos.

Mercedes SLK R172 Third Brake Stop Light Lamp is an original lamp mounted centrally in the rear part of the body, responsible for clear braking signaling. Thanks to the factory design intended for the SLK R172 model, this component ensures proper fit to the bodywork and consistency with the factory lighting system. The used OEM component is a sensible choice for professional repair of the brake light system without interfering with the electrical installation.

Specifications and technical data

• SKU: A1728200056
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1728200056
• Substitutable numbers: A1728200056, A 172 820 00 56
• Category: Centre & Third Brake Light Assemblies

Purpose and function in the vehicle

The presented third brake light lamp has been designed specifically for the Mercedes SLK R172 generation as a central element of the braking signaling system. Placed high in the rear of the vehicle, it improves the visibility of the stop signal for drivers behind, which translates into increased safety in city traffic and on the road.

As a part from the Main and center brake lights group, the component works with other brake lamps, creating a coherent, legible braking signal for other road users. Using an original lamp allows maintaining factory optical and electrical parameters without the need for installation modifications.

Construction and mounting fit

The third brake light for the SLK R172 is an OEM construction, prepared for installation in the body location provided by the manufacturer. The housing and mounting points are adapted to the factory holes, which facilitates installation and reduces the risk of leaks or stresses in the bodywork.

Key mounting features:

• factory shapes and mounts adapted to the R172 body,
• designed connection to the vehicle's electrical system,
• preservation of the original styling line of the rear of the car.

Using an original lamp from this series allows avoiding problems typical of replacements, such as inaccurate fit or differences in color and light intensity compared to other lights.

Benefits of using an original brake lamp

Choosing a used, original third brake light for the Mercedes SLK R172 is a solution that combines the economic aspect with maintaining the manufacturer's standards. The most important advantages include:

• factory compatibility with the electrical system – no need to modify harnesses or connectors,
• optical consistency with other brake lamps,
• preservation of the original appearance of the rear of the vehicle,
• possibility of restoring full functionality of the light system after a collision or failure.

For SLK R172 owners who want to keep the vehicle in accordance with the manufacturer's specification, using an original lamp from the center brake lights group is technically justified and allows reducing the risk of problems with diagnostics or technical inspection.

Application in service and repairs

The element will work well both for point replacement of a damaged lamp and for broader body and paint work in the rear part of the body. The used OEM component is particularly useful in situations where the focus is on:

• recreating the factory lighting system after post-accident repair,
• maintaining compliance with the original Mercedes electrical design,
• reducing service costs while maintaining manufacturer quality.

Proper selection of the third brake light for the specific version of the SLK R172 body is important from the point of view of safety and correct cooperation with vehicle systems.

If you are planning a comprehensive repair or modernization of the rear lighting zone in your Mercedes and need other elements from the same group, such as main brake lamps, central light modules, or additional signaling lights, check the available parts in the Main and center brake lights Mercedes category.

Additional technical support

When working with the braking system and related safety systems, it is worth paying attention to the procedures for selecting and installing components, especially when using second-hand parts. Practical tips on the safe selection of used components can be found in the article Second-hand braking system: how to safely choose discs, calipers, and ABS?, which can be a helpful supplement when planning broader service work.