BMW 1 3 E87 E90 E90N E91 Backrest Frame Carrier Front Seat Sport Right O/S

BMW 1 3 E87 E90 E90N E91 Backrest Frame Carrier Front Seat Sport Right O/S is an original structural base for a sports seat designed for installation on the front right side in selected BMW 1 and 3 Series models. The solid, factory-spec frame geometry ensures proper support for the seat cushion and backrest, providing stable mounting of the entire seat to the vehicle body. This is a practical solution for those upgrading their interior or restoring the full functionality of a sports seat.

Specifications and technical data

• SKU: 7118420-4
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7118420
• Substitutable numbers: 52106982919, 6982919, 52107139026, 7139026, 7118420, 52107133521, 7133521, BG
• Location on the vehicle: Front, Right
• Category: Seats and Sofas

Purpose and function of the seat frame

The presented frame is a load-bearing component of a sports seat mounted on the front right side in BMW vehicles. It is responsible for:

• maintaining the correct seat position relative to the floor and center console,
• stable transfer of loads from the seat cushion and backrest to the chassis,
• ensuring the appropriate rigidity of the sports seat structure.

Thanks to its factory design, the frame works with original rails, mounts, and other seat components, which facilitates installation and reduces the need for modifications. This is particularly important when replacing a damaged base or converting a standard seat to a sports version.

Benefits of using the original SPORT frame

Using an original sports seat frame allows you to maintain the factory driving position characteristics on the passenger side. The structure prepared for the SPORT seat provides:

• appropriate mounting points for the seat cushion and backrest with a more dynamic profile,
• consistency with the factory seat adjustment system,
• preservation of the seating geometry intended by the manufacturer.

For the user, this means a more precise fit of the seat to the interior and the ability to seamlessly replace a damaged frame with a component of the same specification. In the case of upgrading the interior to a sports configuration, the frame serves as a key base for further assembly.

Installation characteristics and compatibility

The frame is designed for installation in the front right part of the cabin, which determines its shape, the layout of mounting points, and the routing of adjustment elements. As a result:

• it fits factory mounting points in the floor on the passenger side,
• it enables correct seat positioning relative to the dashboard and center console,
• it ensures the preservation of the interior ergonomics intended by the manufacturer.

As an item from the Seats and Benches category, the frame works with original upholstery and mechanical seat components, which facilitates the reconstruction of a complete seat in a sports configuration.

Condition of the item and practical application

The product comes from disassembly and is offered as a used part, making it an attractive solution for post-accident repairs, replacing a corroded or mechanically damaged frame, and building a set of sports seats from salvaged parts. Choosing an original seat base allows you to maintain structural consistency with the rest of the interior and reduce the risk of installation problems typical of aftermarket replacements.

If you are planning a comprehensive repair or upgrade of the seating area in your BMW and want to better understand how branded parts from disassembly affect comfort and vehicle value, it is worth checking out our guide: Interior metamorphosis: how branded seats from disassembly improve comfort and increase car value.

Expanding the BMW seating system

When replacing a sports seat frame, there is often a need to supplement other elements of the same group, such as seat cushions, backrests, or headrests. If you are planning a comprehensive repair or upgrade of the seating area in your BMW and need other components from the same group, such as seat cushions, backrests, or headrests, check out the available parts in the BMW Seats and Benches category.