Mercedes SLK R172 Tail Light Rear Lamp Left N/S Side Panel A1729063900

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 lamp is a functional solution for post-accident repairs, replacing a damaged lens, or restoring full lighting performance in a Mercedes SLK R172. It is a practical choice for drivers who expect factory fitment and proper operation of the lighting system.

Specifications and technical data

• SKU: A1729063900
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1729063900
• Substitutable numbers: A1729063900, A 172 906 39 00
• Location on the vehicle: Rear, Left
• Category: Rear Light Assemblies

Purpose and fitment

The presented tail lamp is designed specifically for the Mercedes SLK R172 model, taking into account the body geometry and factory mounting points. The placement on the vehicle is the rear left side, which allows for precise replacement of the damaged component without interfering with the body structure or electrical installation.

By maintaining the original optical form and segmentation, the lamp supports proper vehicle visibility on the road, which is important for both safety and compliance with traffic regulations.

Function in the lighting system

The lamp belongs to the Rear lights and brake lights group, responsible for signaling the vehicle's presence, braking, and – depending on the car's configuration – additional lighting functions provided by the manufacturer. A properly selected rear lighting component:

• ensures a clear light signal for drivers behind you,
• reduces the risk of errors in light control systems,
• maintains a consistent look for the rear of the vehicle.

Choosing an original lamp for a Mercedes allows you to maintain the correct lighting parameters and compatibility with the vehicle's factory electrical system.

Characteristics of the used component

The offered lamp is a used item, which in practice means a favorable cost-to-quality ratio while maintaining the original construction. This type of component is particularly useful for maintenance repairs when the priority is to efficiently restore full lighting functionality without the need to invest in a new part.

A used tail lamp for the Mercedes SLK R172 can be a good solution both for post-collision repairs and for replacing a component with a damaged lens, leaks, or issues with the operation of individual lighting functions.

Benefits of using an original tail lamp

Using an original left-side tail lamp in a Mercedes SLK R172 provides a number of practical benefits:

• Factory fitment – compatibility with the body lines, mounting points, and wiring harness.
• Consistent aesthetics – maintaining a uniform look for the rear of the vehicle, with no differences in the shape or structure of the lens.
• Correct lighting system operation – proper functioning of position and brake lights, in accordance with the manufacturer's specifications.

For users who value technical correctness and compliance with the factory design, such a component is a sensible choice for any major work on the rear lighting section.

Expanding your Mercedes lighting upgrade

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 additional tail lamps, light modules, or complete lamp assemblies, check the available parts in the Mercedes Rear lights and brake lights category.

If you are considering broader visual or functional modifications and want to better understand when it is worth reaching for aftermarket components, the article describing the practical application of used parts may be helpful – you can find it here: The best used parts for tuning your car.