Mercedes C140 Front Door Edge Guard Left N/S Frame Seal Gasket A1406972751

Mercedes C140 Front Door Edge Guard Left N/S Frame Seal Gasket is an original body component from the Door seals category, designed for installation in the front left door of Mercedes vehicles. The precisely profiled geometry of the seal ensures a stable fit to the door frame, reducing wind noise, vibrations, and unwanted air leaks.

Specifications and technical data

• SKU: A1406972751
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1406972751
• Substitutable numbers: A1406972751, A 140 697 27 51
• Location on the vehicle: Front, Left
• Category: Door Seals

Purpose and vehicle placement

The presented seal is dedicated to installation in the front left door area, where the door leaf meets the bodywork. The placement on the vehicle, defined as front – left side, means that the component works with the factory body structure, maintaining the correct fit line and proper pressure when the door is closed.

Such a fit translates into:

• limiting the penetration of water and moisture into the cabin interior,
• reduction of external noise at higher speeds,
• stabilization of the lock and hinge operation due to proper sealing of the door perimeter.

Technical and functional characteristics

The front door seal has been designed as a component that works with the factory mounting points on the Mercedes C140 body. The properly selected profile cross-section and material flexibility allow for even pressure distribution along the entire perimeter, which helps maintain tightness over a long period of operation.

Key functional features include:

• compatibility with the factory door frame geometry,
• maintaining proper door operation without excessive resistance when closing,
• support for cabin acoustic insulation and driving comfort.

Thanks to the use of an original design solution, the seal works with existing body components without the need for interference with the body structure, which is beneficial both technically and economically.

Component condition and service application

The offered seal is a used component, which makes it an attractive alternative to new parts in the case of accident repairs, door service, or restoring tightness in older Mercedes C140 models. This type of component is particularly useful for:

• replacing worn or brittle factory seals,
• repairs after door disassembly or body and paint work,
• reducing the "whistling" of air at the door edge while driving.

Using an original door seal allows you to maintain the structural integrity of the body and preserve sealing parameters close to factory standards, which is important for both comfort and protection of the vehicle interior.

Benefits of using an original Mercedes seal

Choosing an original front door seal for the Mercedes C140 is a solution that helps avoid problems typical of replacements with inaccurate profiles. Precise fit reduces the risk of leaks and minimizes the need for additional hinge or lock adjustments. This is particularly important in premium vehicles, where an appropriate level of acoustic insulation and user comfort is expected.

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 sealing strips, additional perimeter profiles, or window frame seals, check the available parts in the Mercedes door seals category.

Additional information and technical support

Before purchasing, it is worth comparing the shape and path of the seal profile with the element currently installed in the vehicle, especially in the case of cars after body modifications. It may also be helpful to verify compatibility with Mercedes service documentation to ensure that the selected component corresponds to the specific body version.

If you are preparing your car for the winter season and want to better plan the inspection of body elements and other used components, you will find practical tips in the article Winter essentials: which used car parts are worth checking and replacing before the frost?.