Mercedes R171 Headlight Washer Cap Right O/S Thulite Red - 541 A1718800405

Visual condition of the part

The product shows signs of use visible in the photos. Mercedes R171 Headlight Washer Cap Right O/S Thulite Red - 541 is a precisely fitted component from the Bumper inserts and covers group, designed for the right side of the bumper in Mercedes R171 series models. The cover in the elegant Thulite Red Metallic color allows for an aesthetic and technically correct repair of the headlight washer system without interfering with the bumper structure.

Specifications and technical data

• SKU: A1718800405-THR
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1718800405
• Substitutable numbers: A1718800405, A 171 880 04 05
• Location on the vehicle: Right
• Part type: Bumper Insert
• Color: Thulite Red Metallic - 541-2
• Category: Bumper Inserts & Covers

Purpose and function of the component

The headlight washer cover is responsible for shielding the extendable washer nozzle and ensuring it sits flush with the bumper surface. A correctly selected component ensures:

• a visually consistent vehicle front,
• stable mounting on factory clips,
• proper operation of the washer extension mechanism. The placement on the right side of the vehicle allows for the replacement of only the damaged cover, without the need to interfere with the left side or other bumper components.

Color and paint matching

The finish in the Thulite Red Metallic - 541-2 shade allows for maintaining color consistency with the factory Mercedes body paint. As a result, the component does not visually stand out from the bumper after installation, which is particularly important for spot repairs after minor collisions or stone chips. The metallic red harmonizes well with the R171 body line, highlighting the characteristic design of the vehicle's front and maintaining the original look of the headlight area.

Installation characteristics

The cover is designed as a body part dedicated to a specific generation of Mercedes, which translates into:

• geometry consistent with the factory bumper,
• adaptation for mounting on the standard washer mechanism,
• possibility of replacement as part of standard body and paint work. Such a solution facilitates service and shortens repair time, as it does not require modifications or fitting of universal replacements.

Condition and service application

The used component will work particularly well in maintenance repairs and when restoring the vehicle to full efficiency after minor front-end damage. It is a practical solution for workshops and users who want to maintain the original character of the bodywork at reasonable service costs.

Application within the bumper and related components

The cover belongs to the Bumper inserts and covers group, which are elements responsible for finishing and protecting the front zone. In practice, it works with the headlight, the washer mechanism, and the bumper itself, affecting both the aesthetics and functionality of the headlight cleaning system. If you are planning a comprehensive repair or upgrade of the front bumper zone in your Mercedes and need other elements from the same group, such as additional inserts, covers, or grilles, check the available parts in the Mercedes bumper inserts and covers category.

Technical support and part selection

Selecting the appropriate washer cover for a specific body version and paint color is crucial for achieving the correct visual effect and trouble-free installation. In case of doubt, it is worth verifying compatibility based on manufacturer markings, vehicle data, and bumper configuration. For users interested in deepening their knowledge about diagnostics and component selection according to manufacturer markings, an article describing the principles of operation and servicing of one of the key vehicle systems may be helpful – more information can be found in the material Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration.