Mercedes SLK R171 W211 CLS C219 W164 Ignition Xenon Lamp Bulb Holder A0028202526

Mercedes SLK R171 W211 CLS C219 W164 Ignition Xenon Lamp Bulb Holder is an original component from the Lamps and LED lights group, designed for the precise mounting of a xenon burner in the headlight. The used OEM component ensures proper seating of the light source, stability while driving, and the maintenance of correct beam geometry, which translates into safe and comfortable road illumination.

Specifications and technical data

• SKU: A0028202526
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A0028202526
• Substitutable numbers: A0028202526, A 002 820 25 26, 5DD008319-10, 5DD 008 319-10
• Category: Light Bulbs & LEDs

Purpose and function of the xenon bulb holder

The xenon bulb holder in Mercedes SLK R171, W211, CLS C219, and W164 models is responsible for the stable, repeatable positioning of the burner in the reflector or headlight lens. Proper mounting eliminates the risk of vibrations, tilting, or looseness, which could cause incorrect light distribution, blinding other drivers, or a decrease in lighting efficiency.

The original design of the holder is matched to factory Mercedes xenon headlights, ensuring compatibility with the vehicle's optical system and lighting installation. This solution is particularly important when replacing a damaged or worn mount after bodywork repairs, collisions, or long-term operation.

Construction and fitment for Mercedes headlights

The element has been designed as part of the xenon system, with appropriately shaped mounting points and guides that work with the headlight housing. Thanks to this, installation is straightforward, and the holder maintains the burner in a fixed operating position once secured.

The used OEM component maintains factory dimensional tolerances, which is significant when working with the precise optics of xenon headlights. In practice, this means:

• secure seating of the burner in the socket,
• correct alignment of the light focus relative to the reflector or lens,
• reduced risk of overheating adjacent components due to the correct position of the light source.

Benefits of using an original holder in a xenon system

Using an original xenon bulb holder in Mercedes SLK R171, W211, CLS C219, and W164 models allows for maintaining the consistency of the entire lighting system. Unlike universal solutions, the factory element is designed for a specific type of headlight, which minimizes the risk of light adjustment issues or errors during technical inspections.

For workshops and users, this means:

• easier, predictable installation without modifications,
• lower risk of complaints related to improper headlight illumination,
• compliance with the vehicle's factory specifications.

The used condition of the part allows for optimizing repair costs while maintaining original manufacturing quality. This is a practical solution for servicing older generations of Mercedes vehicles, where both functionality and cost-effectiveness are important.

Professional installation and operation in xenon systems

When replacing the xenon bulb holder, it is recommended to remove the headlight or its rear cover in accordance with the service procedure for the specific model. Proper seating of the element and the burner in the socket is crucial for subsequent headlight height adjustment and even distribution of the light beam on the road.

After installation, it is worth checking the headlight alignment on a diagnostic device to ensure that the cut-off line and beam angle are within acceptable standards. Such an approach increases night driving safety and reduces driver eye fatigue.

For users who want to better understand the principles of selecting and replacing components in xenon systems, the following guide will be helpful: Seeing more and better – a complete guide to selecting and replacing used LED and Xenon headlights.

Expanding the lighting system and related components

When working on xenon headlights in Mercedes vehicles, it is worth treating the lighting system as a whole – including the burner, holder, reflector or lens, and other components from the Lamps and LED lights group. A consistent service approach allows for reducing the number of headlight removals and shortening vehicle downtime in the workshop.

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 headlights, light modules, or additional mounting hardware, check the available parts in the Mercedes Lamps and LED lights category.

More on how the availability of used OEM components affects repair time and workshop organization can be found in the article: Availability of car parts off-the-shelf vs. repair time – how used OEM parts shorten workshop stays?.