Mercedes W211 C219 Windscreen Washer Tank Fluid Bottle Reservoir A2118603660

Visual condition of the part

The product shows signs of use visible in the photos.

Mercedes W211 C219 Windscreen Washer Tank Fluid Bottle Reservoir is an original washer system component designed for the E-Class W211 and CLS C219 models. Thanks to its factory-spec fitment, it ensures proper operation of the windscreen washing system and stable mounting of accessories such as pumps or nozzles. It is a practical solution for users who want to restore full washer functionality while maintaining the manufacturer's standards.

Specifications and technical data

• SKU: A2118603660
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2118603660
• Substitutable numbers: A2118603660, A 211 860 36 60, A2118690220, A 211 869 02 20
• Part type: Reservoir
• Category: Washer Pumps, Reservoirs & Nozzles

Purpose and function in the washer system

The presented reservoir belongs to the Washer fluid reservoirs, pumps, and nozzles category, responsible for storing and supplying fluid to the windows. This component works in conjunction with the washer pump and hoses, creating a sealed system that delivers the medium to the nozzles on the windscreen. The proper capacity and shape of the reservoir are tailored to the engine bay of the Mercedes E-Class W211 and CLS C219, which facilitates installation and subsequent maintenance.

Original origin and fitment for Mercedes W211 / C219

As a Mercedes brand product, the reservoir has been designed to maintain factory mounting points and compatibility with original pumps and fluid level sensors. This means:

• a secure fit with the bodywork and adjacent components in the engine bay,
• maintenance of the fluid hose routing as intended by the manufacturer,
• no need for modifications to brackets or the pump electrical installation.

As a result, replacing a damaged or leaking reservoir with this component allows you to restore factory washer system functionality without interfering with the vehicle's construction.

Performance characteristics of the used component

The offered reservoir is a used part, which in practice means it comes from vehicle dismantling and has been verified for further utility. This type of part is a good choice when you care about:

• maintaining the original build quality typical of factory solutions,
• compatibility with existing washer system accessories,
• optimizing repair costs while maintaining OEM standards.

In the case of plastic components, such as fluid reservoirs, tightness and the absence of structural damage are essential – these are the key aspects when selecting a used component.

Installation and maintenance tips

When replacing the washer fluid reservoir in a Mercedes W211 or C219, it is worth paying attention to a few practical issues:

• checking the condition of the washer pumps and seals at the ports,
• inspecting the hoses supplying fluid to the nozzles for abrasions and leaks,
• cleaning the mounting sockets in the bodywork before installing the reservoir.

Such an approach minimizes the risk of recurring leaks and ensures stable system operation in the long term. If you have any doubts regarding part selection by OEM number or VIN, specialized technical guides may be helpful.

For users who want to better understand the principles of selecting components by catalog numbers and VIN, as well as learn good maintenance practices for reservoirs and pumps, the following article will be useful: Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration. Although it concerns a different system, it discusses universal principles of diagnostics, regeneration, and identification of parts by OEM numbers.

Choosing a used part vs. regeneration

Choosing a used, original washer fluid reservoir is often a reasonable compromise between cost and quality. It is worth knowing the differences between purchasing a part from dismantling and refurbished elements – these issues are discussed in more detail in the guide Refurbished or used original – which part to choose for repairs?. This allows you to consciously decide which repair strategy will be best for your specific vehicle and budget.

If you are planning a comprehensive repair or upgrade of the visibility-related zone 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 category Mercedes washer fluid reservoirs, pumps, and nozzles.