BMW G20 G21 Rear Door Wiring Loom Cable Control Unit Left Right N/O/S 8718245

BMW G20 G21 Rear Door Wiring Loom Cable Control Unit Left Right N/O/S is an original electrical installation component designed for the rear doors on both the left and right sides. This product from the Wires, looms and connectors category ensures a proper electrical connection between the door and the body, which translates into stable operation of the door equipment. It is a solution for users who expect factory-fit and predictable electrical system performance.

Specifications and technical data

• SKU: 9436289
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 9436289
• Substitutable numbers: 9436289, 61129436289, 8718245, 61128718245, 61128718246
• Location on the vehicle: Rear, Right, Left
• Category: Wiring Harnesses, Cables & Connectors

Purpose and function in the vehicle

The presented wiring loom is dedicated to BMW G20/G21 series models and operates in the area of the rear doors on the left and right sides. It is responsible for transmitting signals and power between the body installation and components located in the doors, such as control units, actuators, or comfort features. Thanks to the factory geometry of the wires and connectors, the correct cable routing and proper mechanical strain relief are maintained during the opening and closing of the doors.

Construction and installation fit

The wiring loom has been designed as an OEM component, which means compatibility with factory mounting points and grommets in the doors and body pillars. The connectors used are prepared for operation in an automotive environment, taking into account variable temperatures and vibrations. This facilitates plug-in installation in place of a damaged or worn loom, without the need for modifying the installation or using non-factory solutions.

Benefits of using an original wiring loom

Using an original wiring loom in the rear doors of a BMW G20/G21 allows for reducing the risk of communication problems between modules and power supply to equipment components. The main advantages include:

• factory fit for the door structure on the left and right rear of the vehicle,
• maintenance of correct cable routing,
• minimized risk of damage resulting from stress during door operation,
• consistency with the original BMW electrical architecture.

As a result, the wiring loom is a practical solution both for post-accident repairs and for fixing faults resulting from wire abrasion or corrosion.

Product condition and service application

The item is offered as a used OEM component, which in practice means the possibility of an economical repair while maintaining the original installation specification. This type of wiring loom will prove useful in workshops specializing in the BMW brand as well as for users performing body electrical repairs themselves who expect predictable assembly and compatibility with factory modules.

Expansion of the BMW electrical system

If you are planning a comprehensive repair or upgrade of the body electrical installation zone in your BMW and need other elements from the same group, such as additional looms, wire sections, or door connectors, check out the available parts in the BMW Wires, looms and connectors category.

For users interested in a broader context of how systems work in modern vehicles, including the cooperation of the electrical installation with all-wheel-drive systems and body electronics, an article describing various AWD solutions may be helpful – you can find it here: xDrive, 4Matic, quattro or 4Motion – a comparison of AWD drives.