Volkswagen Amarok Mk2 Door Window Regulator With Motor Rear Left N/S 2HJ839401C

Volkswagen Amarok Mk2 Door Window Regulator With Motor Rear Left N/S is an original component from the Window Regulators and Motors group, designed for precise operation of the window on the driver's side in the rear part of the vehicle body. It ensures stable window guidance and smooth operation of the electric drive, which translates into comfort during daily use of the Amarok. This solution is dedicated to the factory electric window system, with no need for installation modifications.

Specifications and technical data

• SKU: 2HJ839401C
• Mark: Volkswagen
• Condition: Used
• OEM Part Number: 2HJ839401C
• Substitutable numbers: 2HJ839401C, 2HJ 839 401 C, N1WB-E27001-BD, N1WBE27001BD
• Location on the vehicle: Rear, Left
• Part type: Regulator & Motor Assembly
• Category: Window Motors & Regulators

Purpose and function in the vehicle

The presented component combines a window guidance mechanism and an integrated electric motor in one housing, responsible for the automatic raising and lowering of the window in the rear left door of the Amarok Mk2. Its placement in the rear driver's side zone allows for consistent operation of all windows in the vehicle, and the proper geometry of the guides ensures correct sealing of the window against the door seals.

Thanks to a design consistent with factory Volkswagen standards, the component works with the original window control system, maintaining comfort closing and overload protection functions, provided they are present in the vehicle's specific configuration.

Construction and technical features

The window regulator with motor is designed as a complete unit mounted inside the door panel. The guidance mechanism stabilizes the window throughout its entire range of motion, reducing lateral play and minimizing the risk of misalignment. The integrated electric drive provides sufficient torque for operation under typical operating conditions, even with frequent window use.

Key design advantages include:

• dedicated fit for the geometry of the Amarok Mk2 rear left door,
• retention of factory mounting points,
• integration of the mechanism and motor into a single assembly,
• adaptation for compatibility with the original Volkswagen electrical installation.

Benefits of using an original window regulator

Using an original window regulator with motor in the Amarok Mk2 allows for maintaining the consistent operation of the entire electric window system. Factory fitment reduces the risk of noise, jamming, or uneven window movement, which often appear with aftermarket parts of lower manufacturing precision. Replacing the complete mechanism assembly with the drive also facilitates service work – the mechanic does not need to separate individual components or force them into place.

This solution is particularly beneficial for repairs following mechanical damage (e.g., seized guides, cable damage, drive failure), where quick and predictable restoration of full door functionality is essential. Consistency with the factory control system helps avoid problems with calibration and errors in the operation of comfort modules.

Condition and installation aspects

The component comes from the original Volkswagen production line and is intended for installation in place of the factory window regulator. The plug-and-play design allows for the use of existing mounting points and factory electrical connectors, which shortens repair time and reduces the risk of installation errors. With proper installation, there is no need to interfere with the door structure or modify the wiring harness.

Due to the specific nature of window mechanism operation, it is recommended that installation be performed by a person with experience in handling car doors, which will allow for proper adjustment of the window relative to the seals and maintenance of cabin tightness.

Selection support and additional materials

If you are planning a comprehensive repair or upgrade of the side window zone in your Volkswagen and need other elements from the same group, such as lifting mechanisms, drive motors, or complete guide assemblies, check the available parts in the Volkswagen Window Regulators and Motors category.

When selecting components for the window and door system, it is worth paying attention to the compatibility of the body version and vehicle year, as well as the manufacturer's markings. For users interested in a broader context of operation and typical design problems in popular models, the article describing critical power units in the E90 series may be helpful – you can find it here: Emergency BMW E90 engines: check what can ruin your budget!.