Window Lifter BMW G20 G21 Motor Rear Right O/S Regulator Drive Unit 8495868

Window Lifter BMW G20 G21 Motor Rear Right O/S Regulator Drive Unit is an original component from the Window regulators and motors group, designed for the precise operation of the window in the rear right part of the vehicle body. It ensures stable operation of the window lifting and lowering mechanism, which translates into user comfort and proper window closing in your BMW 3 Series G20/G21.

Specifications and technical data

• SKU: 8495868
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8495868
• Substitutable numbers: 8495868, 51358495868
• Location on the vehicle: Rear, Right
• Category: Window Motors & Regulators

Purpose and function in the vehicle

The presented window lifter motor is designed to operate in the rear right area of the vehicle body. It is responsible for driving the window lifting mechanism, working in conjunction with the guides and other elements of the window system. Thanks to its proper fit for the BMW G20/G21 platform, it maintains the correct geometry of the window movement, which reduces the risk of jamming, excessive play, or leaks.

The placement on the vehicle defined as rear – right side allows for unambiguous identification of the mounting position and avoids mistakes when selecting parts. This is particularly important in modern designs, where each window motor is assigned to a specific position and works with the appropriate control unit.

Construction and fitment for BMW

The window lifter motor belongs to the Window regulators and motors group, which means it is an actuator of the system responsible for the movement of side windows. The design provided by BMW ensures compatibility with factory electrical harnesses and mounts in the rear right door. As a result, the installation process is orderly, without the need for modifying the installation or interfering with the door structure.

The original origin from the BMW brand promotes consistency with other body components – both in terms of electrical parameters and mechanical fit. This is important in the context of the operation of comfort systems, central locking, or any functions related to window closing.

Condition, verification, and service application

The item is offered as a used part, which allows for an economical repair of the window system while maintaining the original BMW specification. This type of component is particularly useful in situations where the window drive has been damaged, problems with its movement occur, or the controller reports errors related to the operation of the rear right window.

Before installation, a standard service procedure is recommended: inspection of the electrical installation, checking the condition of the guide mechanism, and proper adjustment of the window in the door. A properly selected window lifter motor allows for restoring full window functionality without the need to interfere with other door sub-assemblies.

Benefits of using an original motor

Using an original window lifter motor in a BMW G20/G21 brings a number of practical benefits:

• maintaining factory operating parameters of the window system in the rear right part of the body,
• secure fit to factory mounts and electrical harnesses,
• consistency with the vehicle's comfort and safety systems,
• possibility of effective repair without costly replacement of the entire door mechanism.

For workshops and individual users, this means faster repair completion and reduced risk of compatibility issues. A properly selected window lifter motor helps maintain acoustic comfort and interior sealing, which is important both in daily use and on longer trips.

BMW window regulators and motors – expansion and service

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

Technical support and service knowledge

When working with electrical systems and drives in BMW vehicles, it is worth using reliable sources of service information. A good supplement when planning repairs and assessing the profitability of investing in original components may be an article devoted to the problems of drive units in the 3 Series E90 – you will find practical tips on diagnosis and operating costs in it: Emergency BMW E90 engines: check what can ruin your budget!.