BMW 3 Series E46 Window Lifter Electric Rear Left N/S 8215273

BMW E46 Window Regulator Mechanism Left Rear 8215273 is an original part from the Window Regulators and Motors group, designed for the rear left window in the BMW 3 Series E46 body. This solution allows for the restoration of proper side window operation, ensuring stable window guidance and secure closing in daily use.

Specifications and technical data

• SKU: 8215273
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8215273
• Substitutable numbers: 51368215273, 8215273, 51378229593, 8229593
• Location on the vehicle: Rear, Left
• Category: Window Motors & Regulators

Purpose and Function of the Mechanism

The presented window regulator mechanism has been designed for operation in the rear left part of the BMW E46 body. It is responsible for precise window guidance within the channels and for smooth electric window lifting and lowering. Thanks to proper adaptation to the door structure, correct operating geometry is maintained, which limits the risk of jamming, misalignment, and excessive system loads.

The component belongs to the Window Regulators and Motors group, meaning it works with the window control system and is crucial for the comfort of passengers' side windows. A properly selected mechanism helps avoid problems with windows not closing fully, air noise, and leaks during rain.

Compatibility and Fit for BMW

The mechanism is dedicated to BMW vehicles from the E46 family, located on the rear left side. The supporting structure, mounting points, and arm geometry have been developed for specific doors, which facilitates installation and ensures proper fit with the window and other door components.

Designation as an OEM part and the presence of part numbers and interchangeable numbers in the technical specification make it easier to verify compatibility with a specific body version and model year. This allows for informed selection of the mechanism, minimizing the risk of purchasing an incompatible part.

Performance Characteristics and Advantages

As an original part from disassembly, the window regulator mechanism offers a construction consistent with BMW's factory specifications. You receive:

• a component designed specifically for the rear left window in the BMW E46,
• secure window guidance in the channels,
• stable cooperation with the window control system,
• a solution consistent with the factory door geometry.

Condition: Used indicates that this is a used part, sourced from an operated vehicle, which helps reduce repair costs while maintaining original construction. This is a good solution for users who want to restore the functionality of their window system without investing in expensive new components.

Professional Installation and Operation

Due to the mechanism's importance for driving safety and comfort, installation by a person experienced in working with BMW doors and electrical systems is recommended. Proper alignment of the window with the guides and correct tightening of the mounting points affect the lifespan of the entire system and reduce the risk of recurring faults.

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 window guides, regulator motors, or complete window mechanisms, check the available parts in the BMW Window Regulators and Motors category.

Technical Knowledge and Additional Materials

When planning repairs on BMW cars, it is advisable to be aware of the typical weak points of individual models to better plan your service budget. The guide material: Troublesome BMW E90 Engines: Find Out What Can Ruin Your Budget! may be helpful, showing how to approach operation and repairs for the BMW brand consciously, also in the context of selecting used parts.