BMW Z4 Series E85 E86 Window Regulator Lifter Driver Side Front Right O/S

BMW Z4 Series E85 E86 Window Regulator Lifter Driver Side Front Right O/S is an original component from the Window Regulators & Motors group, designed for precise operation of the passenger side window in BMW Z4 E85/E86 generation models. The design, matched to factory mounting points, ensures reliable mechanism operation and proper integration with the door electrical system.

Specifications and technical data

• SKU: 7142238-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7198910
• Substitutable numbers: 51337198910, 7198910, 51217142238, 7142238, 51337013754, 7013754
• Location on the vehicle: Front, Right
• Category: Window Motors & Regulators

Purpose and function in the vehicle

The presented window regulator is responsible for stable guidance and smooth lifting of the window in the front right door of the BMW Z4 E85/E86. The component works with the factory window control system, ensuring proper closing, opening, and maintaining the window in the desired position while driving.

Thanks to its precise fit for the roadster and coupe body, the mechanism maintains the correct window guidance geometry, which limits stress, reduces the risk of jamming, and helps maintain a tight seal at the glass-to-gasket interface.

Construction and mounting fitment

The regulator has been designed specifically for the front right side of the body, taking into account the characteristic door construction of the BMW Z4 E85/E86. The placement of mounting points and the kinematics of the mechanism arms are in accordance with factory specifications, which facilitates installation and allows for the use of standard accompanying components, such as guides or window mounts.

The appropriate structural rigidity promotes stable operation of the entire system, and the compatibility with the original window lift motor (from the same component group) allows for consistency with the factory comfort system.

Benefits of using an original BMW component

Using a regulator dedicated to the BMW Z4 E85/E86 helps limit problems typical of aftermarket replacements, such as inaccurate fitment or accelerated wear of the guides. The original geometry of the mechanism supports:

• proper adhesion of the window to the seals,
• stable guidance during frequent opening and closing,
• consistent cooperation with the factory window control.

For the user, this means more predictable window operation, a lower risk of rattles and play in the doors, and the preservation of acoustic comfort inside the vehicle.

Characteristics of the used component

The regulator comes from disassembly, which allows for maintaining the original BMW specification while reducing repair costs. A used component from this group is often chosen as a reasonable compromise between price and maintaining factory fitment and compatibility with other door elements.

During installation, it is recommended to check the condition of the window guides, mounting points, and seals to fully utilize the potential of the mechanism and avoid additional stress in the system.

Expanding the BMW window control system

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 lifting mechanisms, drives, or control modules, check the available parts in the BMW Window Regulators & Motors category.

For drivers interested in a broader context of operating cars of this brand, including potential repair costs for power units, the following guide article may be helpful: BMW E90 engine failures: check what can ruin your budget!, which allows for better planning of the entire car's service.