Mercedes R172 Top Roof Water Drain Hose Pipe A1726390094

Visual condition of the part

The product shows signs of use visible in the photos.

Mercedes R172 Top Roof Water Drain Hose Pipe for Mercedes R172 series models is a component of the roof panel water drainage system, designed by the manufacturer to ensure stable operation of the roof mechanism. It is responsible for safely draining water from the top roof area, which reduces the risk of moisture affecting the interior and structural components. Thanks to its factory geometry and connectors, the hose can be installed in place of the original part without the need for any modifications.

Specifications and technical data

• SKU: A1726390094
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1726390094
• Substitutable numbers: A1726390094, A 172 639 00 94
• Category: Hoses, Lines & Pipes

Function and application of the top roof water drain hose

The hose belongs to the Lines, Hoses and Pipes category, responsible for the controlled routing of fluids within the vehicle body. In the case of a top roof, its purpose is to:

• drain water from the roof channels and edges away from the interior,
• reduce the risk of leaks around the pillars and seals,
• protect upholstery, electrical wiring, and metal components from long-term moisture.

A properly selected drain hose helps maintain the correct operation of the roof mechanism as well as the acoustic and thermal comfort of the cabin.

Construction and fitment for the Mercedes R172 roof system

The component has been designed specifically for the roof system of the R172 body, maintaining the correct shape, diameter, and mounting points. As a result:

• the hose routing is consistent with the factory path in the body,
• compatibility with original clips and grommets is maintained,
• the risk of kinks, bends, and local blockages in the drain is reduced.

Original Mercedes branding ensures precise fitment with other roof system components, which is important for both the tightness and durability of the entire water drainage system.

Condition and installation aspects

The offered hose is in used condition, which means it has been removed from a vehicle and may show signs of wear while remaining a functional component of the drainage system. For proper installation, it is recommended to:

• check the hose for blockages before installation,
• inspect the sockets and ports to which the hose is connected,
• install it in accordance with the factory routing, without shortening or excessive twisting.

Replacing a worn or leaking hose with an original part from dismantling is often a cost-effective solution, allowing you to restore proper water drainage without interfering with the roof structure.

Benefits of using an original Mercedes hose

Using a water drain hose dedicated to the R172 body brings a number of practical benefits:

• preservation of the factory water routing concept within the roof area,
• reduced risk of corrosion in critical body points,
• protection of upholstery, carpets, and equipment elements from moisture,
• easier diagnosis of potential future leaks due to compliance with service documentation.

For users who care about technical repair accuracy and consistency with manufacturer solutions, the original roof drain hose is a sensible choice when repairing or upgrading the water drainage system.

If you are planning a comprehensive repair or upgrade of the roof area and water drainage zones in your Mercedes and need other parts from the same group, such as drain lines, flexible hoses, or rigid guide pipes, check the available parts in the Mercedes Lines, Hoses and Pipes category.

For drivers who are also thinking about improving cabin comfort and interior aesthetics while keeping costs reasonable, a guide describing the selection of aftermarket equipment components may be helpful – you can find more practical tips in the article Premium interior for half the price: second-hand seats, steering wheels, and multimedia.