BMW F12 Window Lifter Rear Left N/S Lifter Regulator Mechanism Motor 4882499

BMW F12 Window Lifter Rear Left N/S Lifter Regulator Mechanism Motor is an original component from the Window regulators and motors group, designed for precise operation of the rear left window in the BMW F12 body style. This used OEM component ensures proper compatibility with the factory electrical system and maintains the correct window guidance geometry, which translates into stable and quiet system operation.

Specifications and technical data

• SKU: 7223655
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7223655
• Substitutable numbers: 7223655, 51377223655, 7304523, 67627304523, 7303787
• Location on the vehicle: Rear, Left
• Category: Window Motors & Regulators

Purpose and function in the vehicle

The presented mechanism with motor is responsible for the electric adjustment of the rear left window, integrating the mechanical part of the lifter with the electric drive. It is a key comfort component, enabling smooth opening and closing of the window from the control panel in the door or the driver's console.

Thanks to its dedicated placement in the rear area, on the left side of the body, the component works with factory mounting points and window guides, which minimizes the risk of stress, jamming, or leaks around the seals.

Benefits of using an original BMW mechanism

Using an original motor with a regulator mechanism in a BMW F12 allows you to maintain consistency with the factory window system design. In practice, this means:

• proper fitment to the door structure and factory mounts,
• stable window operation throughout the full range of motion,
• appropriate cooperation with comfort control modules,
• reduced risk of overloads and failures compared to generic replacements.

A used OEM component is also a reasonable compromise between cost and quality – you retain the original BMW specification while optimizing your repair or upgrade budget.

Selection by OEM and interchangeable numbers

The mechanism has been designed specifically for the BMW F12 platform, which is why it is worth using the OEM part number and associated interchangeable numbers when selecting. This allows you to verify compatibility with a specific equipment version and vehicle year, as well as avoid problems with installation or communication with the body electronics.

In case of doubt, it is useful to compare data with service documentation or the manufacturer's catalog, as well as verify the placement on the vehicle – in this case, it is the rear, left side, which is crucial when ordering the correct component.

Condition, installation, and operation

The offered item is in used condition, meaning it comes from disassembly and was previously operated in a vehicle. Such components are popular choices for window repairs because they allow for the restoration of full system functionality while maintaining the original BMW design.

Before installation, a standard service procedure is recommended, including checking the electrical harness, the condition of the guides, and the correct positioning of the window in the door frame. A properly installed mechanism with a motor ensures uniform window movement, reduces operating noise, and decreases the load on the electrical system.

Technical support and expert knowledge

If you want to better understand how to safely use parts from disassembly and how to verify their selection by OEM numbers, an expert guide will be useful: Why it is worth buying used gearboxes and engines – facts instead of myths. You will find practical information there about selection procedures, cost analysis, and methods for evaluating used components, which can also be applied to other elements, such as window mechanisms.

BMW Window regulators and motors – expansion and modernization

If you are planning a comprehensive repair or modernization of the door and window area in your BMW and need other elements from the same group, such as window drives, complete lifter mechanisms, or comfort control modules, check out the available parts in the BMW Window regulators and motors category.