Mercedes A-Class W168 Rear Left Door N/S Window Regulator Lifter A1687302146

Mercedes A-Class W168 Rear Left Door N/S Window Regulator Lifter is a component from the Window regulators and motors category, designed for operating the rear left window in this model's bodywork. It ensures proper window movement within the guides, stable mechanism operation, and correct integration with the factory electric controls. This solution is dedicated to users who expect efficient window lifting system performance without interfering with the door structure.

Specifications and technical data

• SKU: A1687302146
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1687302146
• Substitutable numbers: A1687302146, A 168 730 21 46, EM
• Location on the vehicle: Rear, Left
• Category: Window Motors & Regulators

Purpose and function in the vehicle

The window regulator mounted on the rear left side is responsible for the smooth raising and lowering of the window in the rear passenger door. The component is structurally matched to the Mercedes W168 body, allowing it to work with factory mounting points and the standard control system. Using the correct regulator helps avoid stress on the glass, jamming, and excessive wear of the guides.

Construction and mounting fitment

The mechanism has been designed as part of the system responsible for vertical window movement, maintaining proper geometry and stability. The construction intended for installation in the rear left door allows for proper force distribution, which reduces the risk of the window tilting during operation. Thanks to its factory-intended design for the specific Mercedes model, there is no need for bodywork modifications or mounting adaptations.

Benefits of using the original regulator

Using a dedicated window regulator in the Mercedes W168 translates into several practical advantages:

• maintaining proper cooperation with factory window control switches,
• proper window guidance in the door, reducing noise and vibrations,
• reduced risk of damage to seals and upholstery elements,
• consistency with other components in the Window regulators and motors group.

As a result, restoring the efficiency of the window lifting mechanism is predictable and does not require additional installation modifications.

Performance characteristics and condition

The offered component comes from a used vehicle, which allows for a favorable cost-to-functionality ratio. The regulator is intended for installation as a replacement for a damaged mechanism, especially in situations where the window stops responding to commands, moves jerkily, or drops. A properly selected component from this group allows for restoring window operation comfort and improving the daily ergonomics of using the rear part of the cabin.

Part selection and additional technical information

When selecting components from the Window regulators and motors category for a specific vehicle, it is worth using the manufacturer's markings and vehicle data to ensure full mounting compatibility. In case of doubt, it is helpful to compare the mounting construction and the location of electrical connections with the currently installed mechanism. Such an approach minimizes the risk of incorrect selection and speeds up the repair process.

If you are planning a comprehensive repair or upgrade of the door and window area in your Mercedes and need other elements from the same group, such as lifting mechanisms, electric drives, or guides, check the available parts in the Mercedes Window regulators and motors category.

To better understand the specifics of the used parts market and make informed purchasing decisions during major drivetrain repairs, it is worth reading the guide Why it is worth buying used gearboxes and engines – facts instead of myths, which discusses practical aspects of component selection based on manufacturer markings and operating cost analysis.