Mercedes SLK R172 Headlight Headlamp Lamp Light Front Left N/S A1728203961

Visual condition of the part

The product shows signs of use visible in the photos.

Headlight ballast, control units, bulbs, modules are not included in the sale.

Mercedes SLK R172 Headlight Headlamp Lamp Light Front Left N/S is an original lighting solution designed for installation on the front driver's side. As an element from the Front lights category, it ensures proper light beam direction, improving driving safety while maintaining the factory look of the vehicle's body. This is a used component that allows for a technically correct replacement of a damaged lamp without interfering with the vehicle's structure.

Specifications and technical data

• SKU: RHD-A1728203961
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1728203961
• Substitutable numbers: A1728203961, A 172 820 39 61
• Location on the vehicle: Front, Left
• Category: Headlight Assemblies

Purpose and fitment for Mercedes SLK R172

The presented headlight has been designed specifically for the Mercedes SLK R172 generation, intended for the front left side of the vehicle. This means full compatibility with factory mounting points, as well as the shape of the fender, hood, and bumper, which facilitates installation and allows for maintaining the body lines consistent with the manufacturer's design.

Thanks to a design compliant with the manufacturer's standards, the lamp works with the factory electrical system and the headlight leveling system, ensuring correct road and roadside illumination geometry.

Construction and function of the front headlight

The headlight plays a key role in the vehicle's lighting system, responsible for generating and directing the light beam in low and high beam modes (depending on the vehicle configuration). The applied optics and properly shaped lens allow for:

• precise light cut-off in the upper zone to avoid blinding oncoming drivers,
• effective illumination of the lane and the roadside on the left side,
• maintaining the consistent styling of the Mercedes SLK R172 front end.

The original headlight design is optimized for aerodynamics and cooling, which reduces the risk of excessive heating of internal components and influences the durability of the lighting system.

Condition, origin, and benefits of choosing a used part

The headlight is offered as a used part, which in practice means real savings while maintaining the original build quality characteristic of the Mercedes brand. Compared to cheap replacements, an original lamp from dismantling usually fits the body better, has the correct mounting geometry, and optical parameters consistent with the factory specifications.

Choosing a used headlight is also an environmentally friendly solution – reusing a functional component reduces waste and decreases the demand for the production of new parts. If you want to learn more about the ecological aspect of such decisions, see the article Sustainable automotive – how original used parts affect the environment.

Safety, installation, and practical application

A functional front headlight has a direct impact on driving safety after dark and in difficult weather conditions. A properly selected lamp on the left side ensures:

• clear illumination of the lane axis and the left edge of the road,
• better visibility of road signs and obstacles,
• compliance with technical inspection requirements regarding light intensity and alignment.

The headlight is intended for installation in factory mounting points, which facilitates workshop work and shortens repair time. Using an original element minimizes the risk of problems with headlight leveling and alignment with the hood and bumper.

Expanding the Mercedes lighting system – Front lights

If you are planning a comprehensive repair or upgrade of the front lighting zone in your Mercedes and need other elements from the same group, such as additional lamps, control modules, or complete headlight assemblies, check out the available parts in the Mercedes Front lights category.