BMW E87 E87N LCi Gasket door brake rear right left N/O/S

BMW E87 Door Seal Rubber Right Left Rear is a precisely fitted body part, designed for the rear right and left sides. It is responsible for the tight sealing of the door, noise reduction, and protection of the interior from moisture, which translates to stable acoustic comfort and better upholstery protection. This is a practical solution for users who want to restore the factory functionality of the rear door area in their BMW.

Specifications and technical data

• SKU: 7123542
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 51227123542
• Substitutable numbers: 51227123542, 7123542
• Location on the vehicle: Rear, Right, Left
• Category: Window Seals, Gaskets & Trims

Purpose and Function of the BMW E87 Door Seal

The presented rear right and left side door seal rubber has been designed specifically for the body construction of the BMW E87 series. Its purpose is to maintain proper sealing between the door edge and the body, which helps to prevent water, dust, and air turbulence from entering the passenger cabin.

The appropriately selected seal profile also supports proper door closing, reduces creaks, and minimizes the transfer of vibrations from the body. This ensures that the rear part of the cabin maintains predictable operating conditions, and the locks and hinges are less stressed.

Benefits of Using an Original BMW Seal

Using a seal dedicated to a specific BMW model allows for compliance with the factory geometry of the door opening. In practice, this means:

• secure adhesion to the door edge and body frame,
• reduction of wind noise at higher speeds,
• better protection against moisture ingress to the sills and lower upholstery parts,
• maintaining the aesthetic appearance of the door line in the rear of the vehicle.

For users experiencing increased noise from the rear of the vehicle or noticing water marks around the sills, replacing the seal is one of the basic service actions to restore original performance parameters.

Vehicle Placement and Application

The part is intended for installation in the rear of the vehicle, on both the right and left sides. This placement means that one reference can be used to service both rear doors, simplifying part selection during repair or modernization of the rear body area.

The seal belongs to the group of Window Seals and Trim, meaning it works in conjunction with other sealing elements within the door opening and adjacent glass. When properly installed, it forms a cohesive system of protection against external factors, which is particularly important in daily urban driving and on longer journeys.

Product Characteristics and Condition

The offered seal is a BMW part, ensuring compliance with the factory design specifications of the E87 model. The product comes from the segment of used components, making it a sensible solution for drivers who want to restore proper door sealing without having to resort to more expensive aftermarket alternatives.

Choosing an original part from the secondary market allows for the preservation of the correct shape, flexibility, and mounting method, which facilitates installation and reduces the risk of fitting issues with the door and body edges.

Expansion of Service Work and Additional Materials

If you are planning a comprehensive repair or modernization of the door area in your BMW and need other parts from the same group, such as additional seals, trim strips, or glass profiles, check the available parts in the category BMW Window Seals and Trim.

When working on body sealing and driving comfort, it is also worth taking care of proper vehicle lighting – a guide can help you choose lighting components: See More and Better – A Complete Guide to Selecting and Replacing Used LED and Xenon Headlights.