Mercedes SLK R171 Washer Bottle Tank Windscreen Reservoir A1718690420

Mercedes SLK R171 Washer Bottle Tank Windscreen Reservoir is an original windshield cleaning system component designed for installation in the R171 generation SLK model. Thanks to its factory design, it ensures proper fitment, stable mounting, and correct operation of the washer system, which translates into safe visibility in various weather conditions.

Specifications and technical data

• SKU: A1718690420
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1718690420
• Substitutable numbers: A1718690420, A 171 869 04 20, A1718690120, A 171 869 01 20
• Category: Washer Pumps, Reservoirs & Nozzles

Purpose and function in the washer system

The windshield washer reservoir in the Mercedes SLK R171 is responsible for storing the fluid, which is then pumped to the nozzles and directed onto the windshield. A properly selected component helps maintain:

• stable pressure in the washer system,
• an adequate amount of fluid for both city and highway driving,
• efficient operation of the system in both low and high temperatures.

By using an original Mercedes solution, compatibility with factory mounts, hoses, and washer system accessories is maintained.

Benefits of using an original reservoir

Choosing a windshield washer reservoir dedicated to the SLK R171 allows you to avoid problems typical of aftermarket replacements, such as leaks or improper fitment. Key advantages include:

• Factory fitment to the body and washer system of the specific model.
• Properly designed reservoir geometry, facilitating installation and maintenance.
• Compatibility with original washer system accessories.
• Consistency with the vehicle's factory safety and ergonomics concept.

An element configured in this way allows for predictable system operation, which is important both in daily use and during technical inspections.

Product characteristics and condition

The presented reservoir belongs to the Washer fluid reservoirs, pumps, and nozzles group, meaning it was designed as an integral part of a complete windshield cleaning system. The product is offered as used, which allows for an economical replacement while maintaining the original design specifications.

A used component of this type is a good solution in situations where the existing reservoir has suffered mechanical damage (cracks, leaks) or deformation, and the priority is to maintain the factory standard of installation and system operation.

Selection by manufacturer markings and vehicle integration

The windshield washer reservoir was developed as an OEM part for the Mercedes brand, which facilitates its identification by manufacturer markings and matching to a specific vehicle configuration. When selecting, it is worth paying attention to:

• compatibility with the SLK R171 body generation,
• the type of washer system used in the specific vehicle,
• consistency with existing equipment (pumps, hoses, nozzles).

This approach minimizes the risk of installation problems and ensures that after replacement, the washer system will operate in a predictable and stable manner.

Technical support and additional materials

For users interested in a broader look at issues related to diagnostics and component selection based on manufacturer markings, an article describing the principles of operation and maintenance of other vehicle systems, including selecting parts by VIN and OEM, may be helpful – you can find it here: Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration.

If you are planning a comprehensive repair or upgrade of the area responsible for windshield cleaning in your Mercedes and need other components from the same group, such as additional reservoirs, pumps, or fluid nozzles, check the available parts in the category Mercedes washer fluid reservoirs, pumps, and nozzles.