Mercedes W447 Windscreen Washer Bottle Hose Pipe Cap Water Tank A4478690066

Mercedes W447 Windscreen Washer Bottle Hose Pipe Cap Water Tank is an original washer system component designed for the Mercedes W447 family. Thanks to its factory geometry and fitment, it ensures reliable washer fluid routing from the filler neck to the reservoir and a tight seal for the system. This is a practical solution for users who want to refill washer fluid in a controlled and hassle-free manner while maintaining the efficiency of the entire system.

Specifications and technical data

• SKU: A4478690066
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A4478690066
• Substitutable numbers: A4478690066, A 447 869 00 66
• Category: Additional Wiper & Washer Components

Purpose and function of the component

The described filler neck with hose and cap for the washer reservoir is responsible for safely guiding the fluid from the filling point to the actual reservoir. The integrated cap reduces the risk of fluid contamination and prevents moisture or dirt from entering the system. Such a solution is particularly important in vehicles used intensively, where the washer system operates frequently and must maintain stable performance.

Construction and fitment for the Mercedes W447

The component has been designed for specific mounting points and installation space in the Mercedes W447, which facilitates its installation and subsequent maintenance. The properly profiled hose guides the fluid along an optimal path, minimizing the risk of kinks and flow restrictions. The filler cap is designed to provide a comfortable grip when unscrewing and tightening, while maintaining a stable seat in the filler neck.

Benefits of using an original component

Using an original filler neck with hose and cap in the washer system provides a number of practical benefits:

• maintaining the factory tightness of the washer system,
• stable fluid flow thanks to the matched diameter and shape of the hose,
• easy access to the filling point during daily operation,
• reducing the risk of leaks in the filler area and hose connections.

For the user, this means predictable washer operation and lower susceptibility to common problems, such as air in the system or contamination in the reservoir.

Characteristics of the used product

The offered component comes from a group of used parts, which allows for an economical repair of the washer system while maintaining the original design. This type of component is particularly attractive for accident repairs or replacement after mechanical damage in the engine compartment or wheel arch area. Choosing a used, original sub-assembly allows you to maintain consistency with other components of the installation in the vehicle.

Integration with the wiper and washer system

The filler neck with hose and cap works with other components of the washer system – the reservoir, pump, and nozzles – to create a coherent system responsible for cleaning the windshield. A correctly selected component reduces the risk of air in the lines and makes it easier to maintain the proper fluid level, which translates into the effectiveness of the wipers in various weather conditions.

If you are planning a comprehensive repair or upgrade of the area responsible for visibility on the road in your Mercedes and need other elements from the same group, such as fluid supply lines, connectors, or additional hose sections, check the available parts in the Other Mercedes wiper parts category.

Technical support and part selection

When selecting washer and wiper system components, it is worth paying attention to structural compatibility with the specific body version and vehicle year. Original components intended for Mercedes ensure predictable behavior during installation and operation, which is especially important when working in the limited space of the engine compartment. Additional tips regarding the differences between equipment lines and manufacturers' approaches to designing sub-assemblies can be found in the article BMW M Performance: how do BMW M components differ from standard ones?, which discusses the practical aspects of using parts with different specifications.