Mercedes-Benz M-Class ML W164 Right O/S Roof Rail Seal Weatherstrip A1646904698

The Right Roof Rail Seal for Mercedes-Benz M-Class W164 is an original body part designed to protect the right roof rail from water and dirt ingress. Thanks to its precise fit for the M-Class W164 roof structure, it ensures stable sealing, reduced cabin noise, and an aesthetic finish to the roofline.

Specifications and technical data

• SKU: A1646904698
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1646904598
• Substitutable numbers: A1646904598, A 164 690 45 98, KZ
• Location on the vehicle: Right
• Category: Other Exterior Parts & Accessories

Purpose and Function of the Roof Rail Seal

The presented roof rail seal has been specifically designed for the right side of the Mercedes-Benz M-Class W164 generation SUV body. The element is responsible for:

• Sealing the contact point between the roof rail and the roof panel,
• Preventing water, dust, and road salt from getting under the rail,
• Reducing potential creaks and vibrations of the rail during driving,
• Maintaining a consistent, factory-original roofline finish.

Thanks to its construction in line with Mercedes-Benz factory standards, the seal works with the original roof rail mounting points, facilitating hassle-free installation and long-term sealing performance.

Construction, Fit, and Installation

The right roof rail seal for the M-Class W164 is a profiled element designed for the specific shape of the roof and rail, allowing for:

• Precise adherence to the bodywork on the passenger side,
• Proper water drainage around the rail,
• Maintenance of factory gaps and styling lines.

As an original Mercedes part, the seal is compatible with the model's factory roof rail without the need for modifications or adjustments. In practice, this means that after correct installation, you can achieve sealing performance close to factory standards, which is important for both body protection and interior acoustic comfort.

Characteristics of a Used Part

The offered seal is a used part, sourced from disassembly, allowing for an economical repair of the roof area while maintaining original manufacturer quality. Choosing such a component is particularly beneficial when:

• The existing seal has become worn, hardened, or cracked,
• A complete set of elements around the roof rail needs to be restored after bodywork and paint repairs,
• Maintaining consistency with other original body parts is important.

Using original, used components allows for proper fit to the roof structure while reducing costs compared to new parts.

Benefits of Using an Original Roof Rail Seal

Using a dedicated right-side roof rail seal in the Mercedes-Benz M-Class W164 offers a range of practical benefits:

• Corrosion Protection – Reducing moisture and dirt accumulation under the rail minimizes the risk of corrosion spots on the roof.
• Improved Acoustics – A properly fitted seal helps reduce wind noise and minor rail vibrations at higher speeds.
• Body Aesthetics – Maintaining even gaps and factory fit of roof elements enhances the overall appearance of the vehicle.
• Compatibility with Roof Accessories – Proper rail sealing supports the safe use of roof racks and other accessories mounted on the rail.

Further Knowledge and Selection of Other Components

If you are planning a comprehensive repair or upgrade of the roof area in your Mercedes and need other parts from the same group, such as additional seals, trim strips, or rail covers, check the available parts in the Other Mercedes category.

To better understand the structural differences between standard and sport versions and the impact of body and chassis components on a car's character, it is worth reading the article Audi RS vs. Other Models – What's Under the Hood and Chassis?, which shows how the selection of appropriate components translates into driving characteristics and vehicle operation.

If you are interested in a conscious approach to car ownership and want to make better use of the potential of used parts, check out the guide Eco-Driving: Discover the Benefits of Used Car Parts, where you will find practical arguments for choosing original, used body and equipment parts.