Mercedes-Benz A W168 Rear Left Door N/S Window Regulator Lifter A1687301346

Mercedes-Benz A W168 Rear Left Door N/S Window Regulator Lifter is a factory-original component from the Window regulators and motors category, designed for the rear left window of the first-generation A-Class body. Using a pre-owned component of this type allows for restoring the proper operation of the window lifting mechanism while maintaining the manufacturer's original design, which is particularly important for the precise fitment of guides and mounts. This is a practical service solution for users who value compliance with factory specifications and reasonable repair costs.

Specifications and technical data

• SKU: A1687301346
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1687301346
• Substitutable numbers: A1687301346, A 168 730 13 46, EM
• Location on the vehicle: Rear, Left
• Category: Window Motors & Regulators

Purpose and function in the vehicle

The rear left window regulator in the Mercedes A-Class W168 model is responsible for the stable guidance of the window within the tracks and its smooth raising and lowering. The component works with the window control system in the rear driver-side door, ensuring proper window movement geometry and reducing the risk of jamming. Thanks to the preservation of the original mounting design, the part is perfectly matched to the factory mounting points and the door's sheet metal structure.

Benefits of using an original window regulator

Using an original window regulator in a Mercedes W168 helps maintain the structural integrity of the entire door mechanism. In practice, this means:

• correct positioning of the window relative to the seals and door frame,
• preservation of the mechanism's factory operating characteristics,
• reduction of noise and vibrations while driving,
• easier diagnostics in the event of future repairs.

A pre-owned component from this group is often chosen as an economical and technically safe alternative to new aftermarket replacements, especially when compliance with the factory design is a priority.

Vehicle placement and installation aspects

The presented window regulator is designed for installation in the rear left part of the body, in the door behind the driver. This clear identification of placement facilitates the selection of the correct component during window system repairs. Installation requires standard service procedures involving the removal of the door trim, disconnecting the window from the mechanism, and resetting it in the guides after installing the regulator.

Product characteristics and service application

The rear left window regulator for the Mercedes W168, as a component from the Window regulators and motors group, is designed to work with the factory window control system. A pre-owned component of this type is suitable both for typical repairs after a mechanism failure and for restoring full door functionality after previous, unprofessional modifications. This solution is particularly beneficial for vehicles used on a daily basis, where efficient window operation and maintaining the original door structure are important.

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

How to choose the right window regulator

To select the appropriate window regulator for a Mercedes W168, it is worth paying attention to the installation side, body generation, and compatibility with the factory control system. In practice, the most common methods used are:

• identification based on manufacturer markings on the part,
• verification via the VIN number in service catalogs,
• comparing the mechanism design with the removed part.

When selecting pre-owned components, procedures based on reference numbers and OEM markings are also helpful, as they reduce the risk of purchasing an incompatible part. The broader topic of selecting pre-owned drive components is discussed in the article Why it is worth buying used gearboxes and engines – facts instead of myths, which describes a practical approach to verifying compatibility based on manufacturer markings.

If you want to better organize the process of selecting pre-owned body and equipment components, the guide No more bad purchases! How to professionally select used car parts, saving time and nerves will be helpful, containing tips on working with OEM markings and comparing parts before installation.

Summary

Mercedes-Benz A W168 Rear Left Door N/S Window Regulator Lifter is a practical service solution for A-Class owners who want to restore the smooth operation of the rear left window while maintaining the factory mechanism design. A pre-owned component from the Window regulators and motors group allows you to combine technical repair correctness with cost control, and when properly selected and installed, it will ensure stable window operation and comfort during daily vehicle use.