BMW G26 Rear Window Lifter Regulator Mechanism Motor Left N/S 9854495

BMW G26 Rear Window Lifter Regulator Mechanism Motor Left N/S is an original component from the Window regulators and motors group, designed for precise operation of the rear driver-side window. It ensures stable window operation, correct guidance in the tracks, and proper integration with the vehicle's electrical system.

Specifications and technical data

• SKU: 5A41AC7
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 5A41AC7
• Substitutable numbers: 5A41AC7, 51335A41AC7, 9854495, 9854231
• Location on the vehicle: Rear, Left
• Category: Window Motors & Regulators

Purpose and function in the BMW G26

The presented mechanism is dedicated to the rear left window of the BMW G26 body, responsible for smooth electric raising and lowering of the window. This component works with the factory comfort control system, allowing for precise window positioning and maintaining the seal and proper pressure against the weatherstripping.

Thanks to a design compliant with the manufacturer's standards, the mechanism maintains proper operating geometry, which reduces the risk of jamming, excessive play, or uneven window movement. This is particularly important in modern bodies, where correct window alignment also affects the noise level inside the cabin.

Construction and technical characteristics

The rear left window lifter mechanism in the BMW G26 combines the part responsible for window guidance and the integrated electric drive into one unit. The applied gear system ensures the appropriate motor torque, which translates into stable window movement throughout the full operating range.

This solution is designed as a component mounted in the rear left part of the body, taking into account factory mounting points and wiring harness routing. As a result, installation is orderly, and the entire assembly maintains its factory character and compatibility with other vehicle systems after installation.

Benefits of using an original mechanism

Using an original window lifter mechanism in the BMW G26 allows for maintaining the consistency of the electrical and mechanical system within the rear doors. This component has been designed specifically for the load, window operating range, and control characteristics, which minimizes the risk of overloads and improper operation.

Key advantages include:

• Factory fitment to the rear left part of the body, without the need for mounting modifications.
• Consistent cooperation with original window controls and comfort systems.
• Properly selected motor and gear characteristics, ensuring smooth window movement.
• The ability to restore full window functionality after a failure of the previous mechanism.

Condition and service application

The offered mechanism is a used part, which in service practice allows for economical repair of the window system while maintaining the original BMW design. This type of solution is often chosen in situations where the existing lifter has suffered mechanical or electrical damage, and the priority is to restore efficiency while maintaining compliance with factory solutions.

The mechanism is intended for installation in the rear left part of the vehicle, which facilitates clear identification when planning repairs. Proper selection of the component for the specific BMW G26 body version allows for avoiding compatibility issues and shortens workshop time.

Selection by numbers and integration with other elements

This element belongs to the Window regulators and motors group, which means it works with other components responsible for window control in the vehicle. In service practice, selection is based on manufacturer markings and interchangeable numbers, which allows for matching the correct variant to the specific BMW G26 configuration.

In the case of extensive window system repairs, it is worth paying attention to the condition of the guides, seals, and electrical installation so that the newly installed mechanism can operate in stable conditions.

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

To better plan your repair budget and approach the choice of used components in your car consciously, it is worth reading the guide on our blog: Why it is worth buying used gearboxes and engines – facts instead of myths, which discusses the practical aspects of selecting parts by OEM numbers and the real benefits of using elements from the secondary market.