Bmw U06 Active Tourer Rear Left N/S Window Lifter Regulator Mechanism 5A444C3

The BMW U06 Active Tourer Rear Left Window Regulator is an original mechanism from the Window Regulators and Motors group, designed for the side window in the rear left part of the body. It ensures stable window guidance, proper closing, and repeatable operation in daily use, which directly impacts passenger comfort and safety.

Specifications and technical data

• SKU: 5A444C3
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 5A444C3
• Substitutable numbers: 5A444C3, 51335A444C3, 5A104C3
• Location on the vehicle: Rear, Left
• Category: Window Motors & Regulators

Purpose and Vehicle Placement

The presented mechanism is designed for installation in the rear left part of the BMW U06 Active Tourer body. It is responsible for precise window guidance in the tracks and cooperation with the factory window control system, thus maintaining the correct functionality of the entire system.

Its placement in the rear driver's side door means this component is important for both passenger comfort and the body's sealing in the side area. A properly functioning regulator reduces the risk of play, jamming, and leaks, which translates to stable window operation under various operating conditions.

Technical Characteristics and Compatibility

The mechanism belongs to the Window Regulators and Motors category, meaning it is an integral part of the vehicle's window lifting and lowering system. The construction is adapted to the door geometry of the BMW U06 Active Tourer, ensuring correct mounting points and appropriate operating kinematics.

As a BMW part, it has been developed to maintain factory operating parameters, such as window movement speed, smooth travel, and compatibility with original switches and electrical systems. This solution allows for seamless integration with the existing system without the need for vehicle wiring modifications.

Component Condition and Installation Aspects

The window regulator is offered as a used part, allowing for economical repair of the window system while maintaining the original manufacturer's specifications. This type of component is particularly useful in situations where mechanical damage, track wear, or failure of the existing mechanism has occurred.

Due to its original origin, installation is based on the original mounting points in the door, which facilitates service work and reduces replacement time. Proper fit to the door structure minimizes stress and misalignment, thereby reducing the likelihood of future failures.

Benefits of Using an Original Mechanism

Using an original window regulator for the BMW U06 Active Tourer ensures the consistency of the entire window system, both mechanically and electrically. Compared to aftermarket alternatives, the factory mechanism offers predictable long-term performance and better integration with other door components.

Replacing a damaged part with an original rear left window regulator restores proper window control operation, which affects acoustic comfort, interior protection from weather conditions, and convenience of daily use. This is a practical solution for users who expect consistency with factory BMW specifications without the need to invest in new parts.

Related Components and Technical Knowledge

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

When diagnosing faults in vehicles of this brand, it is also worth knowing the typical operational issues of drive units, so the guide article Faulty BMW E90 Engines: Find Out What Can Ruin Your Budget! may be helpful, showing how to approach servicing BMW cars and planning repair costs consciously.