Mercedes Citan W415 Windscreen Washer Bottle Tank Reservoir A4158690020

Visual condition of the part

Possible scratches and paint chips – condition as shown in the product photos.

Mercedes Citan W415 Windscreen Washer Bottle Tank Reservoir is an original washer system component, designed for professional maintenance of the windscreen area in the Citan W415 model. Thanks to its factory design, it ensures proper fluid storage and stable cooperation with the pump and nozzles, which translates into safe visibility during daily operation. This used OEM component is a sensible choice for drivers looking for a proven solution at an attractive price.

Specifications and technical data

• SKU: A4158690020
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A4158690020
• Substitutable numbers: A4158690020, A 415 869 00 20, 8200431474, 8200431475
• Part type: Reservoir
• Category: Washer Pumps, Reservoirs & Nozzles

Function and role in the washer system

The washer fluid reservoir in the Mercedes Citan W415 is responsible for the safe storage of the working medium and its stable supply to the pump and nozzles. A properly selected component:

• ensures adequate working capacity for the windscreen washer system,
• maintains system tightness and reduces the risk of leaks,
• stabilizes the operation of the washer pump,
• facilitates service and fluid refilling in the engine compartment.

Thanks to its fitment for the specific generation of the Citan W415, the reservoir works with factory mounts and hoses, which reduces the need for modifications during installation.

Construction and fitment for Mercedes Citan W415

The reservoir in question belongs to the Washer fluid reservoirs, pumps and nozzles group, which means it is designed as an integral part of the complete system responsible for cleaning the windows. The design provides for cooperation with factory:

• mounting points in the Citan W415 body,
• hoses supplying fluid to the nozzles,
• washer pump electrical installation.

Such fitment facilitates installation and allows for maintaining the original geometry of hose routing, which is important for both reliability and service convenience.

Benefits of using an original used reservoir

Choosing a used, factory-made washer fluid reservoir for the Mercedes Citan W415 is a compromise between cost and quality. You receive a component designed by the vehicle manufacturer that:

• retains the original mounting points and shape adapted to the body,
• is compatible with the factory washer pump and nozzles,
• allows you to restore full functionality of the system after damage or cracking of the old reservoir.

For many users, this is a practical solution that enables efficient repair without the need to invest in more expensive, new components.

Use of OEM and interchangeable numbers

The selection of a washer fluid reservoir for the Mercedes Citan W415 should always be based on verifying the OEM number and available interchangeable numbers. This allows for precise confirmation of the part's compatibility with a specific body and equipment version, minimizing the risk of purchasing an ill-fitting element. In case of doubt, it is worth comparing the markings with the vehicle documentation or using the help of a specialist who will verify compatibility by the catalog number.

To better understand how the selection of consumables by manufacturer numbers works and how it translates into the durability of entire systems, an article describing diagnostics and component selection in fuel supply systems may be helpful – you can find it here: Fuel system – injectors, pumps and fuel tank: maintenance and regeneration.

Practical tips when choosing a used component

When purchasing a used washer fluid reservoir for a Mercedes, it is worth paying attention to a few technical aspects:

• condition of the connection ports and pump sockets,
• absence of visible cracks and deformations of the body,
• cleanliness of the reservoir interior,
• completeness of mounts and brackets.

An informed choice between a new part, a replacement, and a used component is well summarized in the guide available at the link: Original, replacement or used – which car parts are the most cost-effective?. It allows you to assess when a used component will be an economically justified and technically safe solution.

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