BMW E93 Sport Front Seat Backrest Width Adjustment Wiring Loom 9113361

The BMW E93 Front Seat Backrest Width Adjustment Harness is a specialized electrical component designed for seats with adjustable side bolsters. Thanks to its precise fit for the front seat construction in the BMW 3 Series E93, it ensures a stable electrical connection and proper operation of the adjustment mechanism, which translates to comfort and better back support for the driver or passenger.

Specifications and technical data

• SKU: 9113361
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 9113361
• Substitutable numbers: 52109113361, 9113361, ŁS
• Location on the vehicle: Front
• Category: Seats and Sofas

Purpose and Function in the Seat System

The presented harness belongs to the Seats and Benches category and is intended for installation in the front interior of the vehicle. It is responsible for powering and transmitting control signals to the sport seat backrest width adjustment system, allowing the side bolsters to be adjusted to the user's physique.

This component is crucial wherever a seat is equipped with electric side bolster adjustment – without a functional harness, the adjustment system will not work correctly or may operate unstably.

Construction and BMW Compatibility

The harness has been designed as part of the original BMW front seat electrical system, with appropriately selected connectors and wire lengths. This ensures:

• wire routing follows the factory path within the seat,
• connectors match the dedicated sockets in the backrest adjustment mechanism,
• the risk of wire strain during seat movement and tilting is minimized.

This precise fit helps maintain order under the seat upholstery and facilitates servicing and any further work on the interior electrical system.

Characteristics of a Used Component

The offered harness is a used component, sourced from disassembly. Such electrical components, provided the wires are intact and the connectors are free from mechanical damage, retain their functionality for a long time. In practice, this means the possibility of economically replacing a damaged seat harness without the need to invest in a new part.

The harness can be particularly useful for:

• seat repairs after mechanical damage or flooding,
• swapping sport seats to a different equipment version,
• restoring full backrest adjustment functionality after previous, unprofessional repairs to the wiring.

Benefits of Using a Dedicated Harness

Using the original BMW front seat backrest width adjustment harness avoids the need for wiring modifications, "shortcut" soldering, or the use of universal wires. This, in turn:

• reduces the risk of electrical faults within the seat,
• simplifies diagnostics in case of future adjustment problems,
• helps maintain the consistency of the wiring with BMW service documentation.

For the user, this means more predictable seat operation and the ability to comfortably set the backrest in sport or comfort mode, in line with factory functionality.

BMW Interior Expansion and Modernization

The front seat backrest width adjustment harness can also be used in interior modernization projects, such as retrofitting the car with sport seats or replacing standard seats with more advanced versions. In such cases, proper wiring is essential for all adjustment functions to operate as intended by the manufacturer.

If you are planning a comprehensive repair or modernization of the seating area in your BMW and need other elements from the same group, such as frames, seat cushions, or backrests, check the available parts in the BMW Seats and Benches category.

If you want to better plan your interior modernization, select appropriate seats and control elements, and understand how to safely connect used components, the guide will be helpful: Premium Interior for Half the Price: Used Seats, Steering Wheels, and Multimedia.

More practical tips on making informed choices from the used market, including seat-related installations, can also be found in the article Used Parts – Your Guide to the Best Deals in the Automotive Store, which discusses how to effectively combine savings with vehicle maintenance.