BMW X3 G01 Rear Window Lifter Motor Regulator Drive Unit Left N/S 7457251

BMW X3 G01 Rear Window Lifter Motor Regulator Drive Unit Left N/S is an original component from the Window regulators and motors group, designed to operate the rear left window in the BMW X3 G01 generation body. This used motor ensures a factory fit, proper compatibility with the vehicle's electrical system, and stable operation of the window lifting and lowering mechanism.

Specifications and technical data

• SKU: 7457251
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7457251
• Substitutable numbers: 7457251, 51357457251
• Location on the vehicle: Rear, Left
• Category: Window Motors & Regulators

Purpose and function in the vehicle

The presented motor operates in the rear part of the body on the driver's side, responsible for driving the window regulator mechanism. It is an electrical component that converts the signal from the window control switch into a smooth upward or downward movement of the window, which is important for both driving comfort and cabin sealing as well as passenger safety.

Thanks to its factory design, the motor works with the original BMW control system, maintaining correct operating speeds, rotation direction, and response to commands from the door panel or driver's console. This solution minimizes the risk of communication errors with the vehicle's electronics.

Benefits of using an original motor

Using an original window lifter motor in the BMW X3 G01 allows for maintaining the consistency of the entire window opening system. In practice, this means:

• a secure fit to the factory regulator mechanism in the rear left door,
• proper compatibility with the electrical installation and control modules,
• stable window operation without jerking or unwanted noises,
• maintaining the original functionality of the comfort window control.

A used component from this group is a good choice for maintenance repairs when the existing motor has worn out, overheated, or suffered mechanical damage. This allows for restoring the system's efficiency without the need for a costly replacement of the entire door assembly.

Condition and installation aspects

The motor comes from disassembly and is offered as a used part, which allows for an economical repair while maintaining the manufacturer's original specifications. Installation takes place in the factory location in the rear left door, using the provided mounting points and standard electrical connectors.

When replacing, it is recommended to:

• check the mechanical condition of the regulator guides and cables,
• verify the electrical harness in the door for abrasions and contact corrosion,
• check the window operation after installation throughout the full range of motion.

BMW window regulators and motors – expansion and service

If you are planning a comprehensive repair or upgrade of the door and window area in your BMW and need other components from the same group, such as window drives, regulator mechanisms, or control modules, check the available parts in the BMW window regulators and motors category.

Service knowledge and fault prevention

When working on BMW electrical systems, it is worth knowing the typical weak points of drive units and installations to avoid unnecessary costs. A good supplement to repair preparation can be reading technical guides. For example, in the context of the BMW brand, useful information about characteristic drive unit failures can be found in the article Faulty BMW E90 engines: check what can ruin your budget!, which helps to better understand the specifics of this brand's construction and approach the service of the entire car consciously.

Summary

BMW X3 G01 Rear Window Lifter Motor Regulator Drive Unit Left N/S is a practical solution for users who want to restore the full functionality of the rear left window while maintaining the original operating characteristics. A used, original component from the Window regulators and motors group allows for a technically correct repair, reduction of service costs, and maintenance of the consistency of the electrical system in the vehicle.