BMW F46 Gran Tourer Window Lifter With Motor Drive Rear Left N/S 7321055

BMW F46 Window Regulator Actuator Left Rear 7490195 is an original part from the Window Regulators and Motors group, designed for the rear left window in the BMW F46 body style. It ensures stable, smooth operation of the window lifting and lowering mechanism, providing user comfort and proper integration with the vehicle's electrical system. Thanks to its factory design, it is a precisely fitted replacement for a worn or damaged regulator.

Specifications and technical data

• SKU: 7490197-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7490197
• Substitutable numbers: 7490197, 51337490197, 7434783, 51357434783
• Location on the vehicle: Rear, Left
• Category: Window Motors & Regulators

Purpose and Function in the Vehicle

The presented actuator is dedicated for installation in the rear left part of the BMW F46 body, where it is responsible for stable window guidance and transferring power from the electric motor to the regulator mechanism. The design has been developed for specific mounting points and door geometry, which reduces the risk of play, noise, and improper window closing.

The component belongs to the Window Regulators and Motors group, meaning it works with the factory window control system, including door buttons and potential comfort closing functions. Using the correct actuator in this location is crucial for maintaining the window's seal, safety, and ergonomic use.

Benefits of Using an Original Actuator

Using an original solution in the BMW F46 offers a range of practical advantages, important for both the user and the workshop installing the part:

• secure fit to factory mounting points in the rear left door,
• correct compatibility with the existing regulator motor and wiring harness,
• maintaining the manufacturer-specified window speed and smoothness of movement,
• reducing the risk of jams, mechanism skipping, or incomplete window closure.

Thanks to this, replacing a worn part with a factory-compliant window regulator actuator allows for the restoration of the entire mechanism's proper function without the need for modifications or fitting universal solutions.

Installation and Operational Characteristics

The actuator has been developed for installation in a specific location of the body – the rear left part of the vehicle. This assignment to one side and axle of the car facilitates unambiguous part selection for mechanics and eliminates the risk of installation errors. The design anticipates cooperation with the factory glass and guides, which translates to stable window operation throughout its full range of movement.

As a component from the Window Regulators and Motors category, the actuator is part of a system exposed to cyclical mechanical loads. Replacing it with a functional component helps reduce stress on other mechanism elements, such as guides or window mounts, which can lower operational costs in the long run.

Part Selection by Numbers and Vehicle Integration

Proper selection of the actuator for the BMW F46 is based on the part number and interchangeable numbers, which allow for precise component matching to the specific vehicle configuration. This enables verification of compatibility with the given body style and equipment version, which is particularly important when working with electric window control systems.

To better understand how professional selection of used parts by OEM and reference numbers works in practice, it is worth consulting an expert guide describing selection and verification procedures. A detailed discussion can be found in the article Why Buy Used Gearboxes and Engines – Facts Instead of Myths, which also addresses the quality and cost-effectiveness of using aftermarket parts.

Expanding the BMW Window Control System

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