Mercedes SLK R172 Tail Light Rear Lamp Left N/S Side Panel A1729066400

Visual condition of the part

The product shows signs of use visible in the photos.

Mercedes SLK R172 Tail Light Rear Lamp Left N/S Side Panel is an original component from the Rear lights and brake lights group, designed for installation on the left side of the rear bodywork. This used component ensures a factory fit to the body, correct mounting geometry, and proper lighting characteristics in accordance with Mercedes brand standards.

Specifications and technical data

• SKU: A1729066400
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1729066400
• Substitutable numbers: A1729066400, A 172 906 64 00
• Location on the vehicle: Rear, Left
• Category: Rear Light Assemblies

Purpose and fitment

The presented lamp is dedicated to the Mercedes SLK R172 generation model as a rear left combination lamp. Its placement in the rear left area of the vehicle means it is responsible for the car's visibility from the driver's side, integrating position and signaling light functions according to the factory design.

Its original origin from the Mercedes range translates into a proper fit with the body line, compatibility with the electrical harness, and the maintenance of appropriate light parameters. Thanks to this, the lamp can be used both for standard replacement of a damaged element and for restoring the vehicle to its factory-specified condition.

Construction and function in the lighting system

The lamp belongs to the Rear lights and brake lights group, which means it plays a key role in signaling maneuvers and ensuring vehicle visibility after dark. The design provided by the manufacturer includes integrated light chambers, properly shaped lenses, and reflectors matched to the geometry of the SLK R172 body.

An element designed in this way allows for:

• proper light distribution in the rear zone of the vehicle,
• clear signaling of braking and the presence of the car on the road,
• maintaining the consistent styling of the rear bodywork characteristic of the Mercedes SLK R172.

Condition, installation, and technical aspects

The offered lamp is a used item, which in practice means it retains the original construction and mounting points provided by the manufacturer. Consequently, installation in the factory location is simple and does not require any modifications to the bodywork or electrical installation, while maintaining the correct position in the rear left area of the vehicle.

Using an original component from the Mercedes range reduces the risk of problems with fitment, leaks, or incorrect lighting operation. This solution is particularly beneficial for post-accident repairs, where it is essential to restore the proper geometry and tightness of the rear body section.

Benefits of using an original rear lamp

Using this lamp in a Mercedes SLK R172 brings a number of practical benefits:

• Factory fitment – compatibility with the body line and mounting points provided for the rear left side.
• Consistent lighting characteristics – maintenance of lighting parameters in accordance with the manufacturer's design.
• Compatibility with the installation – designed to work within the vehicle's existing electrical system.
• Can be used for body and paint repairs as well as for replacing a damaged rear light.

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 position lights, brake lights, or additional lighting modules, check the available parts in the Mercedes rear lights and brake lights category.

Additional technical support

When performing service work on Mercedes vehicles, it is also worth paying attention to the condition of other systems, in particular the power unit and engine accessories. To deepen your knowledge on the operation and selection of components for popular C-Class and E-Class models, you can use the guide material Reliability under the star sign – how to take care of engine accessories in popular Mercedes-Benz C-Class and E-Class models?, which helps to better plan service work and the selection of spare parts.