BMW 6 Series E63 E64 Locking Mechanism Rear Back Seat Backrest Armrest 7057780

BMW 6 Series E63 E64 Locking Mechanism Rear Back Seat Backrest Armrest is an original component from the Seats and benches group, designed for the rear interior section. It ensures secure locking of the backrest and a stable connection with the armrest, which contributes to the comfort and safe use of the rear seat in daily operation.

Specifications and technical data

• SKU: 7057780
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7057780
• Substitutable numbers: 52207057780, 7057780
• Location on the vehicle: Rear
• Category: Seats and Sofas

Purpose and function in the BMW 6 Series E63/E64

The presented locking mechanism has been designed specifically for the rear backrest with an armrest in the BMW 6 Series E63/E64 generation. It is responsible for stable locking of the backrest in the operating position, as well as for precise release of the lock when folding the backrest, which is important when increasing luggage space or accessing the rear part of the bodywork for service.

This component works with the rear seat structure, hinges, and control cables, creating a coherent system responsible for the safe and repeatable operation of the folding mechanism. Thanks to its factory origin, the correct geometry and fit to the BMW body structure are maintained.

Construction and technical features

The BMW 6 Series E63 E64 Locking Mechanism Rear Back Seat Backrest Armrest consists of a set of locking and guiding elements that work with the seat structure. The applied solutions ensure:

• secure retention of the backrest in an upright position while driving,
• controlled release of the lock when folding the backrest,
• proper guidance of the backrest movement relative to the body mounts,
• consistent operation with the factory rear armrest.

Thanks to the original design, the mechanism maintains compliance with factory tolerances, which reduces the risk of play, rattles, or improper closing of the backrest.

Application, installation, and compatibility

The mechanism is intended for installation in the rear part of the interior, in the area of the backrest with an armrest. As a component from the Seats and benches group, it works with standard mounts and attachment points in the BMW 6 Series E63/E64 body, which facilitates installation and limits the need for modifications.

When replacing, it is recommended to:

• check the condition of the backrest hinges and the catches working with the mechanism,
• verify the correct routing of the cables or lines controlling the lock release,
• check the operation of the backrest after installation – lock and unlock it several times through the full range of motion.

This approach allows for restoring the proper functionality of the rear seat and operating comfort for passengers.

Characteristics of the used part

The offered mechanism is a used part, sourced from disassembly. This means that it retains the original BMW specification and factory fit to the interior structure, while offering a favorable cost-to-functionality ratio. In practice, this is a solution that allows for an economical repair of the rear backrest folding system without sacrificing compatibility with other seat components.

Before installation, it is worth paying attention to the smoothness of the moving parts and correct positioning relative to the backrest and armrest to maintain the consistent operation of the entire rear seat assembly.

Comfort and safety of use

A functional rear backrest locking mechanism has a direct impact on driving comfort and safety. A securely locked backrest limits unwanted movement of the seat structure, and a properly working lock release facilitates quick folding of the backrest when additional cargo space is needed. By using an original solution, you can maintain the factory standard of rear seat operation and the interior aesthetics characteristic of the BMW 6 Series.

If you are planning a comprehensive repair or upgrade of the rear seat area in your BMW and need other components from the same group, such as backrests, seats, or armrests, check the available parts in the BMW Seats and benches category.

For those who want to plan a broader interior refresh and combine the replacement of the rear seat mechanism with an upgrade of seats, steering wheel, or multimedia system, the following guide will be helpful: Premium interior for half the price: second-hand seats, steering wheels, and multimedia.