Mercedes W205 Windscreen Washer Filler Neck Bottle Tube Pipe Cap A2058600164

Mercedes W205 Windscreen Washer Filler Neck Bottle Tube Pipe Cap is an original washer system component from the Washer fluid reservoirs, pumps and nozzles group, designed for Mercedes C-Class W205 generation models. It ensures leak-proof fluid routing from the filler neck to the reservoir and a secure closure of the system, which translates into stable washer operation and convenient handling when refilling fluid.

Specifications and technical data

• SKU: A2058600164
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2058600164
• Substitutable numbers: A2058600164, A 205 860 01 64, A2058690400, A205869 04 00
• Category: Washer Pumps, Reservoirs & Nozzles

Purpose and function in the washer system

The presented filler neck with tube and cap is responsible for ergonomic refilling of the washer fluid reservoir and maintaining proper system tightness. A correctly selected component in this section eliminates the risk of leaks in the engine compartment, limits the ingress of contaminants into the fluid, and stabilizes pressure in the reservoir, which is important for the operation of the pump and washer nozzles.

In combination with other components from the Washer fluid reservoirs, pumps and nozzles group, this element allows for maintaining full efficiency of the system responsible for cleaning the windshield, and in selected configurations, also the headlights.

Construction and fitment for Mercedes W205

The filler neck integrated with the tube and cap has been designed for the specific geometry of the engine compartment in the Mercedes W205, thanks to which it fits factory mounts and routings. A properly profiled neck facilitates access from above, even with dense equipment layout, and the cap ensures a secure closure without the need for excessive force.

The original origin from the Mercedes brand means maintaining the correct diameter, length, and shape of the connectors, which minimizes the risk of stress, cracks, or leaks after installation. Thanks to this, the element can be used both as a replacement for a damaged filler neck and as part of a comprehensive washer system rebuild.

Characteristics of the used component

The offered filler neck with tube and cap comes from dismantling, which allows for economical repair while maintaining the original manufacturer's specification. A used component is a particularly favorable choice in situations where only the plastic components of the washer system have been damaged, and quick restoration of full functionality is required without investing in a new set.

In practice, this means the possibility of matching it to the existing reservoir, pump, and fluid hoses without the need for system modifications. A used component also allows for maintaining material consistency with other elements of the system, which is important for long-term operation.

Benefits of using an original washer filler neck

Using an original filler neck with tube and cap in a Mercedes W205 translates into a number of practical benefits:

• stable mounting in factory body points and engine compartment covers,
• proper fluid routing to the reservoir without the risk of hose kinks,
• tight system closure, limiting evaporation and contamination,
• easy access when refilling fluid, also under service conditions.

Thanks to this, the driver gains predictable washer operation in daily use, and the service has easier access to the element during inspections and repairs.

Related system components and part selection

Replacing the filler neck with tube and cap often goes hand in hand with checking the condition of the reservoir, pump, and washer nozzles. If you are planning a comprehensive repair or modernization of the zone responsible for the washer system in your Mercedes and need other elements from the same group, such as a fluid reservoir, pump, or washer nozzles, check the available parts in the Mercedes washer fluid reservoirs, pumps and nozzles category.

When selecting components, information on identification methods by manufacturer numbers and VIN, as well as on the proper use of operating fluids in the vehicle, may also be helpful. These issues are discussed more broadly in our blog article: Fuel system – injectors, pumps and fuel tank: maintenance and regeneration, which organizes knowledge about diagnostics, selection, and regeneration of elements functionally similar to fluid systems in a car.