Mercedes R172 Door B-Pillar Seal Gasket Rubber Right O/S A1726310298

Mercedes R172 Door B-Pillar Seal Gasket Rubber Right O/S is a precisely fitted body component responsible for the tightness and stable operation of the passenger-side door. The original B-pillar sealing rubber provides proper protection against noise, water, and contaminants, improving acoustic comfort and interior durability. This is a practical solution for users who want to technically restore the factory door fitment parameters.

Specifications and technical data

• SKU: A1726310298
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1726310298
• Substitutable numbers: A1726310298, A 172 631 02 98
• Location on the vehicle: Right
• Category: Door Seals

Purpose and function of the B-pillar seal

The presented Mercedes R172 Door B-Pillar Seal Gasket Rubber Right O/S operates at the critical contact point between the door and the body, in the area of the center pillar. Its tasks include:

• limiting the ingress of water and moisture into the cabin,
• reducing wind noise at higher speeds,
• stabilizing the door position relative to the body,
• protecting the door edge and paint in the contact zone.

The component is dedicated for installation on the right side of the vehicle, which allows for maintaining proper fitment geometry and compliance with the factory body construction.

Benefits of using an original Mercedes seal

Choosing an original B-pillar seal for a Mercedes translates into a number of practical operational advantages. The design, tailored to the specific R172 body generation, ensures:

• proper alignment on the door and pillar edges without the need for modifications,
• consistency with the factory body line and existing mounting points,
• maintaining proper door pressure against the seal, which affects tightness and acoustics.

Thanks to this, Door seals selected according to the original specification help restore vehicle comfort after replacement or body and paint repairs.

Component characteristics and installation

The right-side B-pillar seal has been designed as a component that works with the door structure and the body frame. The rubber profile is shaped to:

• ensure uniform pressure along the entire contact length,
• work flexibly when opening and closing the door,
• minimize the risk of leaks in the upper and middle parts of the pillar.

The product in used condition is a cost-effective solution, allowing for a technically correct replacement of the component without the need to resort to replacements with uncertain fitment. Installation only requires following the correct sequence of removing the old seal and seating the new one in the factory-provided points.

Application in service and body restoration

The right-side B-pillar seal will work well both for local repairs after a collision and for comprehensive restoration of the door zone in a Mercedes R172. This is particularly important in vehicles where the following have appeared:

• water leaks in the area of the center pillar,
• increased wind noise during highway driving,
• signs of wear or cracks in the old rubber.

Selecting the correct seal allows for restoring factory tightness parameters, which is important for both driving comfort and the protection of upholstery and electronic components in the door.

Expanding the scope of repairs and additional materials

If you are planning a comprehensive repair or upgrade of the door zone in your Mercedes and need other components from the same group, such as additional perimeter seals, window frame seals, or threshold seals, check the available parts in the Mercedes door seals category.

For users interested in optimizing service costs and using used parts in other brands, an article describing the evolution of power units and the approach to repairs may be helpful – more information can be found in the material Volkswagen 1.9 TDI vs 1.4 TSI – evolution of VW engines and repair costs.