Mercedes W901 W903 W905 Windscreen Washer Tank Reservoir A9018690120

Mercedes W901 W903 W905 Windscreen Washer Tank Reservoir is an original windshield cleaning system component designed for first-generation Mercedes Sprinter commercial vehicles. Thanks to its factory-spec fitment, it ensures stable mounting, correct hose routing, and the appropriate capacity for the washer system. This used OEM component is a sensible choice for workshops and users looking for a proven solution at an attractive price.

Specifications and technical data

• SKU: A9018690120
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A9018690120
• Substitutable numbers: A9018690120, A 901 869 01 20
• Category: Additional Wiper & Washer Components

Purpose and function in the washer system

The presented reservoir is a component of the windshield washer system in Mercedes W901, W903, and W905 models. It is responsible for safely storing the fluid, supplying it steadily to the pump, and distributing it to the washer nozzles. The design, tailored to this specific generation of Sprinter, facilitates installation in factory mounting points without the need for system modifications.

A properly selected washer fluid reservoir is crucial for:

• maintaining the appropriate fluid level in the system,
• ensuring continuous operation of wipers and washers in difficult weather conditions,
• maintaining windshield clarity and, consequently, driving safety.

Original origin and fitment for Mercedes Sprinter

As a Mercedes brand component, the reservoir has been designed for full compatibility with the factory washer system in W901, W903, and W905 vehicles. This means maintaining the correct geometry, mounting points, and connections for hoses and accessories. In practice, this translates into:

• secure fitment with the bodywork and adjacent components,
• no issues with collisions with other engine bay components,
• the ability to use the existing installation without additional adaptations.

For workshops and service centers, this means faster service, and for the end user – predictable washer system performance after replacing the reservoir.

Used condition – a conscious choice of OEM parts

The offered reservoir is in used condition, which allows you to combine the advantages of an original OEM part with a more favorable purchase cost. This solution is particularly attractive when servicing commercial vehicles, where both reliability and operating economy are important. The used factory component maintains the correct structural fit while allowing for the optimization of repair budgets.

If you want to better understand the differences between new and used parts, their impact on service costs, and component durability, it is worth reading the article: Car parts – new or used? We compare costs, quality, and durability. This is a practical compendium of knowledge for making service decisions.

Benefits of using an original washer reservoir

Using an original washer fluid reservoir in a Mercedes Sprinter W901/W903/W905 allows you to maintain the consistency of the entire windshield cleaning system. Compared to universal aftermarket replacements, the factory component ensures:

• secure fitment for the specific body version,
• correct routing of hoses and accessories,
• stable mounting that minimizes the risk of vibrations and leaks,
• preservation of the factory functionality of the washer system.

Thanks to this, the wiper and washer system can operate in a predictable manner, which is especially important in heavily used commercial vehicles.

Expansion and other Mercedes wiper system components

If you are planning a comprehensive repair or upgrade of the windshield visibility zone in your Mercedes and need other elements from the same group, such as wiper arms, washer nozzles, or additional supply hoses, check out the available parts in the Other Mercedes wiper parts category.

Summary

Mercedes W901 W903 W905 Windscreen Washer Tank Reservoir is a practical solution for users and service centers looking for an original washer system component at a reasonable price. Factory fitment, compliance with the vehicle's design, and the preservation of the windshield cleaning system's functionality make it a solid foundation for restoring full wiper system efficiency in your first-generation Mercedes Sprinter.