BMW F12 Door Window Lifter Regulator Unit Rear Right O/S 7303788

BMW F12 Door Window Lifter Regulator Unit Rear Right O/S is an original component from the Window Regulators and Motors group, designed for installation on the rear right side of the vehicle body. It ensures stable window guidance, proper operation of the lifting and lowering mechanism, and maintains the factory functionality of the rear window in the BMW 6 Series F12.

Specifications and technical data

• SKU: 7303788
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7303788
• Substitutable numbers: 7303788, 7304524, 67627304524
• Location on the vehicle: Rear, Right
• Part type: Regulator & Motor Assembly
• Category: Window Motors & Regulators

Purpose and function in the vehicle

The presented window regulator is dedicated to the rear right side of the BMW F12 body, ensuring a precise fit to the door structure and window guides. The component is responsible for the smooth movement of the window up and down, working in conjunction with the factory control motor and the vehicle's electrical system.

Thanks to the preservation of the original mounting geometry and guides, installation is predictable, without the need for modifications to the door or upholstery. This solution allows for restoring proper window closing, eliminating jams, and reducing noise resulting from improper window alignment relative to the seals.

Benefits of using an original window regulator

Using an original window regulator in the BMW F12 translates into a number of practical advantages:

• Factory fit – compatibility with the door structure and factory mounting points.
• Stable mechanism operation – proper window guidance minimizes the risk of misalignment and excessive loads.
• Compatibility with the electrical system – works seamlessly with the original window controls and comfort functions.
• Restoration of original door sealing – a correctly adjusted window interacts better with the seals.

The rear right window regulator is particularly important in the BMW F12 convertible, where correct window positioning affects not only acoustic comfort but also the proper closing of the entire side window set.

Characteristics of the used component

The offered window regulator is a dismantled, used part, which allows combining the functionality of an original component with a more favorable purchase cost. Such components are a popular choice for window mechanism repairs where maintaining the factory design while optimizing the service budget is a priority.

For installation, standard service procedures are recommended: checking the condition of the guides, rollers, and mounting points, as well as proper window adjustment after installation. This allows for fully utilizing the mechanism's potential and reducing the risk of re-failure resulting from improper installation.

Application in service practice

The rear right window regulator in the BMW F12 is a typical component replaced when symptoms such as uneven window lifting, stopping halfway, unusual operating noises, or lack of response to controls occur. Replacing the complete mechanism is often faster and more predictable than repairing individual sub-components.

When selecting parts, manufacturer markings and reference numbers are helpful, allowing for verification of compatibility with a specific equipment version. In case of doubt, it is worth using the vehicle's VIN or service documentation to avoid installing an incorrect variant.

If you are planning a comprehensive repair or upgrade of the side window area in your BMW and need other elements from the same group, such as lifting mechanisms, control motors, or guides, check the available parts in the BMW Window Regulators and Motors category.

Expert support and selection of used components

When working with aftermarket parts such as window regulators, it is useful to understand the general principles of selecting used components based on manufacturer markings and vehicle specifications. In the context of other key drivetrain components, this is discussed in detail in the expert guide: Why it is worth buying used gearboxes and engines – facts instead of myths. The verification procedures and approaches to OEM numbers contained therein can be analogously applied to the selection of used equipment components, including window mechanisms.