Mercedes-Benz E-Class S211 W211 Cowl Drain Hose Line A2118300325

Mercedes-Benz E-Class S211 W211 Cowl Drain Hose Line is an original water drainage system component, designed specifically for the E-Class estate and sedan body styles. Thanks to its factory-spec fitment, it ensures efficient water drainage from the cowl area, reducing the risk of moisture buildup inside the vehicle and protecting sensitive electrical components.

Specifications and technical data

• SKU: A2118300325
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2118300325
• Substitutable numbers: A2118300325, A 2118300325, A 211 830 03 25, EM
• Location on the vehicle: Rear
• Category: Other Exterior Parts & Accessories

Purpose and function in the body system

The hose in question is a component of the drainage system in the rear part of the vehicle, responsible for directing water away from the cowl area and adjacent body zones. When properly installed, the hose helps to:

• reduce the risk of water accumulation in body cavities,
• limit the possibility of corrosion on sheet metal and mounts,
• protect electrical harnesses and connectors located near drainage zones,
• maintain stable operating conditions for body components in the rear of the car.

Thanks to the design developed by the vehicle manufacturer, the hose maintains its proper shape and cross-section, which promotes stable water flow even during heavy rainfall.

Compatibility and fitment for Mercedes-Benz E-Class

The hose has been designed for the W211/S211 generation E-Class platform, taking into account the body geometry and factory mounting points. This means that it:

• fits original brackets and routings in the rear of the vehicle,
• does not require body modifications or additional adapters,
• maintains compliance with the factory water drainage concept for this model.

Such fitment translates into trouble-free service installation and predictable drainage system performance over a long service life.

Characteristics of the used component

The offered hose is a part removed from a vehicle, which allows for maintaining the original manufacturer's specifications. A used component of this type is a good solution when:

• you want to restore the efficiency of the water drainage system after damage or cracking of the existing hose,
• you care about maintaining the factory geometry and material flexibility,
• you are looking for a cost-effective way to service the rear body zone.

A hose of this type, with proper installation and clear drains, can significantly reduce moisture problems in the rear part of the cabin and the trunk.

Installation and maintenance tips

When replacing the cowl drain hose in the rear of the vehicle, it is worth paying attention to a few technical aspects:

• checking the patency of drainage channels and holes in the body,
• inspecting the condition of seals and grommets where they pass through the sheet metal,
• correct routing of the hose in accordance with the factory path, without kinks or twists,
• verifying that water flows out freely after installation is complete.

This approach allows you to fully utilize the potential of the original drainage hose and minimize the risk of further service interventions in this area.

Service expansion and related components

If you are planning a comprehensive repair or upgrade of the rear body zone in your Mercedes and need other elements from the same group, such as additional drain hoses, grommet covers, or small drainage mounts, check the available parts in the Other Mercedes category.

When selecting used body components and auxiliary systems, it is also worth familiarizing yourself with a practical comparison of new and used parts – you will find it in the article New or used? A comparison of car parts costs and quality, which helps to consciously plan your repair budget.

If you are interested in a broader context of design differences between standard and sports versions in the premium segment, you will find useful information in the blog post Audi RS vs other models – what is hidden under the hood and chassis?, where the impact of changes in the chassis and auxiliary systems on the car's character is discussed.