BMW X3 F25 Window Lifter Rear Left N/S Motor Regulator Mechanism 7258535

BMW X3 F25 Window Regulator Rear Left 7258535 is an original part from the Window Regulators and Motors category, designed for the rear left window in the BMW X3 F25 body style. The precise OEM construction ensures proper operation of the window lifting mechanism, stable window guidance in the tracks, and predictable system behavior during daily use.

Specifications and technical data

• SKU: 7258535
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7258535
• Substitutable numbers: 7258535, 67627258535, 7382138, 51357382138, 7205854, 51357205854, 7267103, 51357267103, 7267104, 51357267104, 7205853, 51357205853, 7329332, 51357329332, 7258536, 67627258536, 7329331, 51357329331, KD
• Location on the vehicle: Rear, Left
• Category: Window Motors & Regulators

Purpose and Vehicle Placement

The regulator is designed for installation on the rear left side of the vehicle, meaning it is tailored to the door geometry, mounting points, and window guidance characteristic of the BMW X3 F25. Proper placement on the vehicle minimizes the risk of stress on the mechanism, reduces operating noise, and allows for the preservation of the factory window closing line.

This part belongs to the Window Regulators and Motors group, meaning it works with the factory electrical system and window controls in the door and from the driver's position. This ensures that standard window control functions, such as smooth raising and lowering, are maintained after installation.

Construction and Technical Function

The window regulator is responsible for transferring power from the motor to the window and for its stable guidance throughout the entire range of motion. The OEM construction ensures:

• appropriately selected gear ratio for smooth window operation,
• correct mounting points to the door,
• compatibility with the factory control motor,
• maintenance of the manufacturer-specified window movement speed.

Thanks to the use of original guide and arm geometry, the mechanism reduces the risk of window misalignment, excessive play, or excessive resistance, which is important for both user comfort and the durability of the entire system.

Benefits of Using an Original Regulator

Using a regulator specifically designed for the BMW X3 F25 rear left door maintains consistency with the factory body construction. Key benefits include:

• precise fit to the door and window without the need for modifications,
• preservation of the manufacturer-specified window operating characteristics,
• reduced risk of improper window closing or jamming,
• compatibility with factory mounting points and wiring harness.

A part from this group is particularly important in vehicles equipped with electric window controls, where proper cooperation between mechanics and electronics affects user comfort and safety.

Condition and Service Application

This regulator is from the BMW offering and is intended as a service replacement in case of damage to the factory mechanism, wear of the guides, or failure of the window lifting system. It is suitable for both routine repairs and comprehensive door restoration after a collision or bodywork intervention.

Thanks to the presence of the OEM part number and interchangeable numbers, precise verification of compatibility with a specific vehicle configuration is possible, facilitating the selection of the correct part based on service documentation or vehicle data.

Part Selection and Additional Materials

If you have doubts about compatibility with a specific BMW X3 F25 equipment version, it is advisable to use the OEM part number and reference numbers to verify the fit for a given vehicle. When selecting other components of the window system, such as motors or regulators, it may also be helpful to compare the construction of the part being installed with the one currently installed in the vehicle.

If you are interested in other parts from the Window Regulators and Motors group for vehicles of this brand, check the available parts in the BMW Window Regulators and Motors category.

When selecting used components for mechanical and drivetrain systems in a car, including parts that interact with the electrical system, it is worth familiarizing yourself with the principles of verification by OEM numbers and the real cost differences between new and used parts – this is discussed in more detail in the article Why Buying Used Gearboxes and Engines is Worth It – Facts Instead of Myths.