Mercedes CLK-Class W209 Door Weather Seal Gasket Front Right O/S A2036971251

Mercedes CLK-Class W209 Door Weather Seal Gasket Front Right O/S is a precisely fitted body component designed for installation on the front right door of Mercedes vehicles. It is responsible for tightly sealing the door, reducing noise, vibrations, and moisture ingress into the cabin, which translates into stable acoustic comfort and vehicle usability.

Specifications and technical data

• SKU: A2036971251
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2036971251
• Substitutable numbers: A2036971251, A 203 697 12 51, EM
• Location on the vehicle: Front, Right
• Color: Black
• Category: Door Seals

Purpose and function of the seal

The presented seal has been designed specifically for the front door area on the right side of the body, ensuring proper guidance of the door panel and stable sealing of the perimeter. This component is responsible for:

• limiting the ingress of water and moisture into the cabin,
• reducing wind noise at higher speeds,
• dampening minor vibrations and rattles at the contact point between the door and the body,
• maintaining proper door pressure against the body frame.

Thanks to its appropriate profile and flexibility, the seal works with the door structure, supporting proper closing and stable positioning of the door panel relative to the body.

Construction, color, and fitment

The seal is made in a universal black color, which allows for a consistent visual integration with the factory finish of the pillars, upholstery, and door frame. Black is the standard color for this group of components, ensuring the product harmoniously integrates with most interior and exterior paint configurations.

The working profile of the seal has been adapted to the geometry of the front door on the right side, which enables proper adhesion to the edges of the body and windows. Properly formed pressure zones help maintain an even gap around the entire perimeter, which is important for both acoustics and protection against external factors.

Performance characteristics and installation

As an item from the Door Seals category, this part is designed to operate in variable operating conditions – from high to low temperatures, with exposure to water, road grime, and UV radiation. The seal's construction supports:

• stable shape retention over a long period of use,
• appropriate flexibility in bends and corners,
• repeatable, secure door closing without excessive resistance.

The component is intended for installation in the factory-designated location on the perimeter of the front passenger-side door. A correctly installed seal contributes to maintaining driving comfort and reducing the risk of corrosion at critical contact points between the door and the body.

Condition and benefits of choosing an original used part

The product is offered as a used part, which allows for combining a favorable purchase cost with the retention of factory fitment to the door structure. An original seal from a vehicle of the same brand usually works better with the body line than universal profile replacements, which is significant for sealing and acoustics.

Choosing an original used component is particularly beneficial for body parts where the correct shape, geometry, and compatibility with factory mounting points matter. This allows for effectively restoring proper door sealing without the need for costly modifications.

Expanding the scope of service work

If you are planning a comprehensive repair or upgrade of the door area in your Mercedes and need other elements from the same group, such as additional perimeter seals, pillar seals, or threshold seals, check the available parts in the Mercedes Door Seals category.

If you are interested in a broader context regarding the cost-effectiveness of using original used parts instead of refurbishment, it is worth reading the analysis of costs and risks described in the article: Manual transmission failures – why an original used part is often a more sensible choice than regeneration.