Mercedes ML W164 Window Lifter Motor Front Right O/S Drive Unit A2518200842

The Mercedes ML W164 Front Right Window Motor is an original part from the Window Regulators and Motors group, designed for precise operation of the front passenger side window lifting mechanism. This solution allows for the restoration of proper electric window control, ensuring stable and repeatable operation of the entire system.

Specifications and technical data

• SKU: A2518200842
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2518200842
• Substitutable numbers: A2518200842, A 251 820 08 42
• Location on the vehicle: Front, Right
• Category: Window Motors & Regulators

Intended Use and Vehicle Placement

The motor is designed for installation in the front right door, where it is responsible for driving the window lifting and lowering mechanism. Placement in the passenger door area requires a component with appropriately selected operating parameters to ensure compatibility with the factory comfort control system and maintain proper window speed and smoothness.

Thanks to its dedicated design for a specific side of the vehicle, this component ensures proper fit with guides, mounts, and the electrical harness, which reduces the risk of stress, noise, and uneven window operation.

Benefits of Using an Original Window Motor

Choosing an original Mercedes window motor translates into a number of practical advantages in daily use:

• maintaining the factory operating characteristics of the electric window regulator,
• proper cooperation with comfort control modules and the central locking system,
• stable torque parameters, reducing mechanical overload,
• reduced risk of window jamming, jerking, or stopping midway,
• better fit with factory mounts and electrical wiring harnesses.

A properly selected motor from this parts group helps avoid problems typical of aftermarket replacements with imprecise parameters, such as excessive noise, slow operation, or errors in the comfort system.

Product Characteristics and Condition

The presented part comes from the Mercedes offering and belongs to the Window Regulators and Motors category, meaning it has been specifically designed for operation within the window control system of this model. The product is marked as used, which in practice means it comes from a disassembly and its performance parameters are a result of previous use in a vehicle.

A used window motor is a particularly cost-effective solution while maintaining compliance with factory specifications. For many users, it represents a sensible compromise between price and functionality, allowing for the restoration of system efficiency without the need to invest in a new component.

Part Selection by Numbers and Purchase Security

To ensure full compatibility with a specific equipment version, it is advisable to refer to the OEM part number and available interchange numbers when selecting. This approach minimizes the risk of purchasing a component with different operating characteristics or a different type of electrical connector. If in doubt, comparing the markings on the disassembled motor or verifying by VIN number is a good solution.

If you want to better understand how to professionally select used drive components by OEM and VIN numbers, you can find practical tips in the article: Why it's worth buying used gearboxes and engines – facts instead of myths. Although it mainly concerns powertrains, the identification and verification procedures for numbers described there can be successfully applied to other components, such as window motors.

Expanding the Window Control System in a Mercedes

If you are planning a comprehensive repair or modernization of the door area and window lifting system in your Mercedes and need other parts from the same group, such as additional window motors, regulators, or control modules, check the available parts in the Mercedes Window Regulators and Motors category.

This approach allows for the renewal of the entire window control system in a single service stage, which reduces the risk of subsequent failures and ensures consistent operation of all components – from the door buttons, through the comfort modules, to the motors and lifting mechanisms themselves.