Mercedes W221 CL C216 Washer Tank Reservoir Filler Neck A2218600064

Mercedes W221 CL C216 Washer Tank Reservoir Filler Neck is an original washer system component designed for S-Class W221 and CL C216 coupe models. Thanks to its factory-spec fitment, it ensures a secure connection to the reservoir, stable hose routing, and hassle-free fluid refilling, which translates into efficient operation of the entire washer system and safe visibility while driving.

Specifications and technical data

• SKU: A2218600064
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2218600064
• Substitutable numbers: A2218600064, A 221 860 00 64
• Category: Washer Pumps, Reservoirs & Nozzles

Purpose and function of the washer fluid filler neck

The presented item belongs to the Washer fluid reservoirs, pumps, and nozzles category and is responsible for the convenient and leak-proof delivery of fluid from the filler cap to the actual reservoir. In practice, this means:

• easy access to the filler neck in the engine bay, without the need to maneuver around the reservoir itself,
• stable mounting in the bodywork, reducing vibrations and hose stress,
• proper fluid routing, which reduces the risk of leaks and air locks in the system.

In the event of damage, cracking, or deformation of the filler neck, leaks, difficulties in refilling fluid, and accelerated wear of other washer system components may occur. Replacing it with an original component allows for the restoration of factory operating parameters.

Why it is worth using an original Mercedes component

The washer fluid filler neck dedicated to Mercedes W221 and CL C216 models has been designed for specific bodywork and mounting systems, which ensures:

• precise fitment with the factory reservoir and brackets, without the need for modifications,
• compliance with the engine bay geometry – no collisions with other components,
• maintenance of the original hose routing path, which limits the risk of chafing and cracks.

An original Mercedes component also offers predictable material behavior over a long service life and compatibility with other washer system elements, such as pumps or nozzles.

Characteristics of the used component

The offered filler neck comes from dismantling, which allows for a favorable cost-to-quality ratio while maintaining the manufacturer's original specifications. A used element of this type is particularly attractive in situations where:

• mechanical damage to the filler neck has occurred (cracks, broken brackets),
• a quick and economical repair of the washer system is necessary,
• you want to maintain the factory assembly standard in your Mercedes S-Class or CL.

Choosing an original, used filler neck allows you to avoid problems typical of aftermarket replacements with uncertain fitment, such as leaks, material stress, or assembly difficulties.

Compatibility and selection by markings

The selection of the correct washer system filler neck for a Mercedes should always be based on manufacturer data, such as the OEM part number or interchangeable numbers. This ensures that the component will be compatible with the specific body version and model year of your car, and that the installation will proceed without issues. In case of doubt, it is useful to compare the shape, mounting points, and diameter of the connection to the reservoir with the element currently installed in the vehicle.

For those who want to deepen their knowledge on selecting components by manufacturer markings and proper maintenance of vehicle systems, an article describing diagnostics and component selection by VIN/OEM may be helpful – check the material: Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration.

Expanding the Mercedes washer system

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

Combining a properly selected filler neck with other components from this group allows you to build a coherent, leak-proof, and functional washer system that will ensure a clear windshield and driving comfort in various weather conditions.