BMW X5 Series E53 Rear Left N/S Door Window Lifter Regulator Motor Adjuster

BMW X5 Series E53 Rear Left N/S Door Window Lifter Regulator Motor Adjuster with adjustment motor is an original component from the Doors and door panels group, designed for precise operation in the rear left section of the vehicle body. It ensures stable window guidance and smooth operation of the lifting and lowering mechanism, which translates into vehicle comfort and proper door closing.

Specifications and technical data

• SKU: 8254913-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8254913
• Substitutable numbers: 51358254913, 8254913, 51357125059, 7125059, 67628362063, 8362063, EM
• Location on the vehicle: Rear, Left
• Category: Doors & Door Skins

Purpose and function in the vehicle

The presented item is a complete assembly responsible for the mechanical guidance and drive of the window in the rear left door of the BMW X5 E53 series. The integrated mechanism works with the vehicle's electrical system, allowing the window to be controlled from the driver's panel or the switch in the rear passenger door.

The placement on the vehicle, defined as rear – left side, allows for unambiguous identification of the correct mounting position and reduces the risk of error when selecting parts for a specific location in the bodywork.

Construction and technical properties

The BMW X5 E53 window regulator combines rails, a gearbox, and an electric adjustment drive in one housing. This configuration ensures:

• stable vertical window guidance,
• even power transmission from the motor to the lifting mechanism,
• adequate mounting rigidity inside the door,
• consistent operation with the factory comfort control system.

Thanks to the use of the original BMW design, compatibility with factory mounting points and correct window operation geometry are maintained, which is important for door sealing and reducing cabin noise.

Selection and compatibility with BMW X5 E53

The component has been designed specifically for the BMW X5 E53 series platform and meets the design requirements of this model. This means that it:

• fits the factory mounting hole in the rear left door,
• works with the vehicle's original electrical harness,
• maintains the operating parameters specified by the manufacturer.

The presence of dedicated part numbers and interchangeable numbers (visible in the technical specification) facilitates verification of compatibility with a specific equipment version and vehicle year, which is essential for professional service maintenance.

Condition, functional advantages, and installation

The window regulator is offered as a used part, which allows for economical repair of the window system while maintaining the original BMW build quality. This type of solution is particularly beneficial in the event of mechanical damage or drive failure, when the goal is to reduce costs without sacrificing the factory design.

The main advantages of this component include:

• original fitment for the BMW X5 E53 rear left door,
• preservation of the factory window operation geometry,
• possibility of installation in place of a damaged regulator without structural modifications,
• consistency with the vehicle's window control system.

With proper installation, you achieve stable and repeatable window operation, which affects daily usage comfort and proper door closing in comfort mode.

Expansion of repair scope and related parts

If you are planning a comprehensive repair or upgrade of the door area in your BMW and need other elements from the same group, such as panels, reinforcements, or additional structural elements, check the available parts in the BMW Doors and door panels category.

For users interested in a broader perspective on the cost-effectiveness of using original components from the secondary market, an article describing the advantages of factory used parts in the context of durability and operating comfort may be helpful – you can find it here: Mercedes – comfort, prestige, and durability. Why is it worth choosing original used parts?.