Door Window Lifter BMW F45 Active Tourer Motor Rear Left N/S 7463487

The BMW F45 Active Tourer Rear Left Window Regulator is an original part from the Window Regulators and Motors group, designed for precise operation in the rear left window of the vehicle. It ensures stable window guidance, correct power transfer, and repeatable operation of the lifting and lowering mechanism, which translates to comfort in the daily use of the BMW F45 Active Tourer.

Specifications and technical data

• SKU: 7490193-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 2579945
• Substitutable numbers: 51337490193, 7490193, 51337296387, 7296387, 7463487
• Location on the vehicle: Rear, Left
• Category: Window Motors & Regulators

Purpose and Function in the Vehicle

The rear left window regulator in the BMW F45 Active Tourer is responsible for the controlled, linear guidance of the window in the rear driver's side door. This component works with the window control system, guaranteeing:

• smooth window lifting and lowering without jamming,
• proper window guidance in the tracks,
• correct transfer of torque from the motor to the lifting mechanism.

Thanks to its dedicated placement in the rear left area, the regulator is structurally adapted to the door geometry and factory mounting points in BMW, which facilitates installation and reduces the risk of improper fit.

Compatibility and Fit for BMW

As a part intended for the specific BMW F45 Active Tourer model, the regulator has been designed to maintain the factory operating parameters of the window mechanism. The appropriate geometry of the arms, the placement of the mounts, and the cooperation with the original window lifting motor allow for:

• maintaining the factory window movement speed,
• proper cooperation with factory switches and controllers,
• minimizing noise and vibrations during operation.

Such a fit is particularly important for comfort window control systems, where the repeatability of end positions and appropriate response to electrical signals are crucial.

Characteristics of a Used Part

The presented window regulator is a used part, sourced from disassembly. For many users and workshops, this is a sensible choice as it allows for maintaining the original BMW manufacturing quality while optimizing repair costs. A used part from the Window Regulators and Motors group is a good solution in situations where:

• the existing mechanism has suffered mechanical damage (e.g., broken cables, broken mounts),
• there are problems with smooth window movement,
• a quick replacement with a part of factory design is necessary.

Choosing an original, used regulator allows for compliance with the factory BMW specification, which is particularly important in vehicles equipped with advanced comfort systems.

Benefits of Using an Original Window Regulator

Using a dedicated rear left window regulator in the BMW F45 Active Tourer translates into a number of practical operational benefits:

• Stable Mechanism Operation – proper window guidance reduces the risk of jamming and uneven closing.
• Factory Mounting Points – no need for bodywork modifications or adaptations, which shortens installation time.
• Consistency with Other Door Components – maintaining the correct window alignment with seals and frames, which affects interior sealing and acoustics.

For workshops and users, this means a predictable repair outcome and a lower risk of complaints related to improper window operation after mechanism replacement.

BMW Window Regulators and Motors – Door Area Expansion and Service

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

Safe Selection of Used Parts and OEM Procedures

When selecting a used window regulator for a BMW, it is crucial to pay attention to compliance with manufacturer markings and installation parameters. In workshop practice, OEM selection procedures and vehicle data are often used to avoid compatibility issues. In the context of used body parts and accessories, it is also worth knowing the best practices for purchasing and verifying the condition of parts before installation – this is discussed in more detail in the guide Safe Online Purchase of Used Car Parts – A Step-by-Step Guide.

If you are interested in a broader perspective on used components, including strategies for selection based on manufacturer markings and cost-effectiveness analysis of repairs, the expert material Why Buy Used Gearboxes and Engines – Facts Instead of Myths may be helpful, which clarifies the most important facts and procedures when working with aftermarket parts.