BMW E46 Coupe Vent Quarter Window Drive Motor Actuator Rear Right O/S 8238744

BMW E46 Coupe Vent Quarter Window Drive Motor Actuator Rear Right O/S is an original component from the Window Regulators and Motors group, designed for the precise operation of the passenger-side quarter vent window. It ensures stable operation of the opening and closing mechanism, restoring full functionality to the rear right window in the coupe body style. This solution is dedicated to users who expect factory-fit and predictable system performance.

Specifications and technical data

• SKU: 8238744-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8238744
• Substitutable numbers: 67158238744, 8238744, BG
• Location on the vehicle: Rear, Right
• Category: Window Motors & Regulators

Purpose and function in the BMW E46 Coupe

The presented actuator is designed to operate in the rear right section of the BMW E46 Coupe body, where it is responsible for driving the quarter window. Its task is to smoothly transfer torque to the tilting mechanism so that the window opens and closes in a controlled manner, without jerking or jamming. This maintains cabin sealing, proper air circulation, and acoustic comfort while driving.

Construction and technical fitment

The actuator motor is an OEM design prepared specifically for the geometry of the BMW door and side body section, which translates into correct positioning relative to the window guides and hinges. The appropriately selected internal gear ratio ensures the correct window movement speed, and integrated mounts allow for installation at factory points without the need for modifications. Such fitment reduces the risk of stress in the mechanism and extends its service life.

Benefits of using an original actuator motor

Using an original drive for the rear right quarter window brings a number of practical benefits:

• maintaining the factory operating characteristics of the window – speed, range of motion, and end positions,
• reliable fitment to the vehicle's electrical system,
• stable cooperation with the existing tilting mechanism,
• reduction of the risk of play, noise, and leaks in the rear part of the cabin.

Thanks to this, you restore full functionality to the rear right window without compromising on ergonomics and user comfort.

Installation and practical application

The rear right window actuator motor in the BMW E46 Coupe is intended for installation in the factory location in the rear side panel area on the passenger side. With correct selection based on the OEM number and body configuration, installation comes down to replacing the element in the existing system, while maintaining original cable routing and mounting points. Such a procedure facilitates service and allows for quick restoration of the window opening system's efficiency.

BMW Window Regulators and Motors – expansion and service

If you are planning a comprehensive repair or upgrade of the side window zone in your BMW and need other elements from the same group, such as door window drives, complete regulator mechanisms, or additional vent actuators, check the available parts in the BMW Window Regulators and Motors category.

How to consciously choose used components

When selecting used drive elements for windows, it is worth being guided by OEM number compatibility, body configuration, and vehicle placement to avoid problems with installation and mechanism operation. The approach used when choosing other key components, such as power units or transmissions – based on verifying markings and technical parameters – may also be helpful. You can read more about this approach, selection procedures based on markings, and the real benefits of purchasing used components in the article Why it is worth buying used gearboxes and engines – facts instead of myths.