BMW F45 Rear Door Guide Sealing Seal B-column Bottom Left N/S 4827813

BMW F45 Rear Door Guide Sealing Seal B-column Bottom Left N/S 4827813 is a precision-fitted body component designed for the rear left door area in BMW 2 Series F45 models. It is responsible for a tight seal between the door and the B-pillar, which translates into improved acoustic insulation, reduced water ingress, and stable door guidance. Thanks to its factory geometry, the seal ensures proper adhesion to the bodywork and maintains the vehicle's original performance parameters.

Specifications and technical data

• SKU: 4827813
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 4827813
• Substitutable numbers: 51354827813, 4827813, 51357298891, 7298891
• Location on the vehicle: Rear, Left
• Category: Door Seals

Purpose and function of the B-pillar seal

The B-pillar seal in the BMW 2 Series F45 operates in a demanding area of the rear left body section, where the door is opened and closed repeatedly. Its tasks include:

• sealing the contact point between the door and the B-pillar structure,
• reducing wind noise while driving,
• minimizing vibrations and squeaks in the door area,
• protecting the interior from moisture and contaminants.

A properly selected seal in this location contributes to cabin acoustic comfort and the stability of the lock and hinges, as the door rests against a flexible yet appropriately rigid rubber profile.

Compatibility and fit for the BMW 2 Series F45

The presented seal has been designed specifically for the B-pillar structure of the BMW 2 Series F45 in the rear left body section. This means that:

• the seal profile is matched to the shape of the pillar and the door edge,
• the mounting points correspond to the factory sockets in the bodywork,
• there is no need for modifications or forced fitting.

As a result, installation is predictable, and after fitting, the original door alignment is maintained, which is important for both sealing and the aesthetics of the side of the vehicle.

Characteristics of the used part

The rear left door B-pillar seal comes from dismantling, which allows for compliance with BMW's factory specifications. The used component retains its sealing function while representing a cost-effective choice compared to a new part. For many BMW 2 Series F45 users, this is a practical solution for accident repairs, replacing worn-out seals, or restoring original driving comfort.

Installation and benefits of replacement

Replacing the B-pillar seal in the rear left part of the vehicle is recommended when the following occur:

• wind noise at higher speeds,
• water leaks around the door edges,
• visible cracks, dry rot, or deformation of the rubber.

Using the appropriate seal in this location allows for restoring stable door closing, improving acoustic comfort, and reducing the risk of corrosion around the sills and the pillar. Installation, following basic service procedures, can be performed in a standard workshop specializing in bodywork and door systems.

BMW door seals – expanding the sealing zone

If you are planning a comprehensive repair or upgrade of the door sealing zone in your BMW and need other components from the same group, such as perimeter door seals, additional sealing profiles, or contact elements, check out the available parts in the BMW door seals category.

For users interested in a broader context of operating all-wheel-drive vehicles, including BMW models equipped with the xDrive system, an article discussing various AWD solutions, their construction, and service may be helpful. More information can be found in the material: xDrive, 4Matic, quattro or 4Motion – a comparison of AWD systems from BMW, Mercedes, Audi, and VW.