BMW G20 LCI G21 Window Lifter Motor Regulator Front Left N/S 8498853 5A5C891

The Front Left Window Regulator Motor for BMW G20 LCI / G21 is an original part from the Window Regulators and Motors group, designed for precise operation of the driver's window. It ensures stable operation of the window lifting and lowering mechanism, contributing to user comfort and proper door closure in modern BMW 3 Series models.

Specifications and technical data

• SKU: 7497103
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7497103
• Substitutable numbers: 61 35 5 A5C 891, 61355A5C891, 5 A5C 891, 5A5C891, 8 498 853, 8498853, 51338498853, 51 33 8 498 853
• Location on the vehicle: Front, Left
• Part type: Regulator & Motor Assembly
• Category: Window Motors & Regulators

Vehicle Application and Placement

The presented window regulator motor is designed for installation in the front left door area, i.e., the driver's side. Its placement in this area is crucial for everyday driving comfort – this is the window most frequently used during city driving, in parking lots, or during traffic stops.

Thanks to its dedicated fit for the door construction of BMW G20 LCI and G21, the component works seamlessly with the factory guide mechanism and electrical control, facilitating installation and minimizing the risk of window operation geometry issues.

Function and Benefits of Use

The window regulator motor is responsible for powering the entire window position adjustment mechanism. Its proper functioning contributes to:

• smooth window lifting and lowering without jerking,
• proper window sealing, which reduces noise and drafts,
• correct integration with factory comfort functions (e.g., control from the door panel).

Using an original motor from the Window Regulators and Motors group ensures consistency with the factory electrical system and door construction, which is particularly important in modern BMW models where comfort systems are integrated with the vehicle's electronics.

Product Characteristics and Fitment

The offered component is part of the original window control system in the BMW 3 Series G20 LCI / G21 generation. The motor's design is prepared to work with the factory window regulator, ensuring that original vehicle functionality is maintained after correct installation.

The product has an assigned OEM part number and interchangeable numbers, which facilitates unambiguous identification and selection based on service documentation or manufacturer catalogs. If you have doubts about compatibility with a specific equipment version, it is advisable to verify the match by part number or by consulting a mechanic specializing in the BMW brand.

Condition, Origin, and Practical Application

The window regulator motor is a used part, which translates into a favorable compromise between purchase cost and maintaining original manufacturing quality. For many BMW users, choosing such a solution is a sensible alternative to aftermarket parts of unknown origin, especially for electrical components subjected to intensive use.

Replacing a faulty window regulator motor with a functional component of this type restores full functionality to the driver's door, improves driving comfort, and eliminates problems with a stuck or sagging window. This is a practical solution for both routine repairs and comprehensive door refurbishment in vehicles used daily.

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 drives, control modules, or complete regulator mechanisms, check the available parts in the BMW Window Regulators and Motors category.

Technical Support and Expert Knowledge

When selecting electrical components, many users wonder about the choice between new and used parts. For more complex assemblies, such as motors or transmissions, it is advisable to rely on reliable technical data and cost analysis. An expert guide describing OEM number selection procedures and real differences between new and used components can be helpful – you can find it in the article Why Buy Used Transmissions and Engines – Facts Instead of Myths, which organizes the most important information and facilitates informed purchasing decisions.