Mercedes SLK R171 Windscreen Washer Filler Neck Bottle Tube Pipe Cap A1718690017

Mercedes SLK R171 Windscreen Washer Filler Neck Bottle Tube Pipe Cap is a precision component of the washer system, responsible for the airtight routing of fluid and secure sealing of the reservoir in the front part of the vehicle. Thanks to its factory-fit design for the SLK R171, it ensures stable washer operation and proper fluid supply to the nozzles. This is a practical solution for users who want to restore the full functionality of the windshield washer system while maintaining compliance with the original specifications.

Specifications and technical data

• SKU: A1718690017-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1718690017
• Substitutable numbers: A1718690017, A 171 869 00 17
• Location on the vehicle: Front
• Category: Washer Pumps, Reservoirs & Nozzles

Function and role in the washer system

The washer fluid reservoir tube and cap are responsible for an airtight connection between the reservoir and the rest of the system, as well as for securely closing the filler neck. A properly selected component of this type reduces the risk of leaks, air entering the lines, and pressure drops in the system, which translates into effective windshield cleaning in all weather conditions.

Its location in the front zone of the vehicle facilitates quick service access, while simultaneously requiring the component to be properly matched to the geometry of the engine bay and factory mounts. Using an original solution allows for maintaining proper hose routing, avoiding material stress, and ensuring stable operation of the entire system.

Compatibility and fit for Mercedes SLK R171

The presented tube and cap have been designed specifically for the Mercedes SLK R171 generation, which means compatibility with the factory washer system and body structure. Proper profiling and connection diameters facilitate installation in existing brackets and sockets, without the need for modifications or the use of additional adapters.

Such a fit is particularly important in vehicles where the washer system interacts with the complex structure of the front bodywork. The correct tube and cap help maintain predictable hose routing, minimize the risk of rubbing against other components, and support long-term, stable operation.

Benefits of using an original component

Choosing an original washer fluid reservoir tube and cap for the Mercedes SLK R171 is a solution that allows you to maintain the integrity of the entire system. Key advantages include:

• Factory fit to the geometry of the front compartment and existing mounts.
• Reduced risk of leaks and uncontrolled fluid loss.
• Stable washer operation thanks to proper hose routing.
• Easier diagnostics and service when all components match the original configuration.

A washer system configured in this way supports safe driving, ensuring good visibility during rain, slush, or heavy windshield contamination.

Condition, origin, and service application

The element comes from the Brand: Mercedes offering, which guarantees compliance with factory manufacturing and assembly standards. This used product is a reasonable choice in situations where the priority is to restore full system efficiency while maintaining a favorable cost-to-quality ratio. This type of component works perfectly both for typical maintenance replacements and for repairs following a collision in the front of the vehicle.

The tube and cap can be used as a replacement for a damaged or leaking element that causes fluid loss, air in the lines, or problems with the washer pump operation. Replacing it with a verified component allows you to quickly eliminate such symptoms and restore proper system operation.

Selection support and additional materials

When selecting washer system components, it is worth paying attention to compliance with the manufacturer's markings and the configuration of the specific vehicle. For more complex repairs of supply and distribution systems, technical materials regarding diagnostics and part identification by factory markings may be helpful, such as the article Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration, which discusses, among other things, the principles of selecting components by manufacturer numbers.

If you are planning a comprehensive repair or modernization of the front zone in your Mercedes and need other elements from the same group, such as hoses, reservoirs, or fluid pumps, check the available parts in the Mercedes washer fluid reservoirs, pumps, and nozzles category.

For modernization projects that utilize verified aftermarket components, inspiration can also be found in the guide The best used parts for tuning your car, which describes a practical approach to choosing used components based on their technical condition and intended use.