VW Volkswagen Eos 1F Rear Window Glass Regulator Lifter Right O/S 1Q0839402A

VW Volkswagen Eos 1F Rear Window Glass Regulator Lifter Right O/S is an original component from the Window regulators and motors group, designed for precise operation of the window in the rear right section of the body. It ensures stable window guidance and proper cooperation with the control mechanism, which translates into comfort when using the roof and windows in the Eos. This solution is dedicated to a specific model, which facilitates fitting and reduces the risk of installation problems.

Specifications and technical data

• SKU: 1Q0839402A
• Mark: Volkswagen
• Condition: Used
• OEM Part Number: 1Q0839402A
• Substitutable numbers: 1Q0839402A, 1Q0 839 402 A
• Location on the vehicle: Rear, Right
• Part type: Regulator & Motor Assembly
• Category: Window Motors & Regulators

Purpose and function in the vehicle

The described window regulator is designed to work in the rear right section of the first-generation Volkswagen Eos convertible body. It is responsible for:

• smooth raising and lowering of the window in the rear side zone,
• stable guidance of the glass pane in the rails,
• cooperation with the factory window and roof control system.

Thanks to its dedicated placement in the vehicle, this component maintains the correct window operating geometry, which limits stress and reduces the risk of jamming or uneven closing.

Benefits of using an original regulator

Using an original window regulator in a Volkswagen Eos allows you to maintain the factory operating parameters of the mechanism. In practice, this means:

• proper cooperation with the electrical system and vehicle control units,
• appropriate fitment to the mounts in the door/side panel without modifications,
• maintaining the correct speed and smooth operation of the window,
• lower risk of motor overload and damage to the guides.

In the case of the Eos model, where the windows work with an extensive roof system, the proper selection of the regulator has a direct impact on the tightness and acoustic comfort of the cabin.

Installation characteristics

The regulator is intended for installation in the rear right part of the vehicle, which simplifies the identification of the correct side during repair. When replacing, it is worth paying attention to:

• correct positioning of the window in the guides after installation,
• checking operation throughout the full range of motion,
• verifying cooperation with other windows and the control module.

A properly selected and installed component helps restore the correct operation of the entire window system, which is especially important after collisions, bodywork interventions, or operational wear.

Condition and practical application

The component comes from dismantling and is intended for users who want to economically restore the efficiency of the window mechanism in their Eos, while maintaining the original manufacturer's specification. This is a good solution for:

• mechanical failure of the regulator (jamming, no window movement),
• damage after a collision in the rear right part of the body,
• problems with proper window closing in automatic mode.

Thanks to the preservation of the factory design, you can avoid typical problems known from replacements, such as inaccurate fitment or altered operating geometry.

Volkswagen window regulators and motors – expansion and service

If you are planning a comprehensive repair or modernization of the side and rear window zone in your Volkswagen and need other elements from the same group, such as guides, lifting mechanisms, or window drives, check the available parts in the Volkswagen window regulators and motors category.

Technical support and parts selection

When choosing used components, many drivers wonder whether it is better to opt for regeneration or original parts from dismantling. The following article may help in making the decision: Refurbished or used original – which part to choose for repair?, which discusses the practical differences between these solutions.

If you are also interested in the subject of potential repair costs of drive units in other brands, it is worth reading the material: Emergency BMW E90 engines: check what can ruin your budget!. This will allow you to better plan the service budget for your entire fleet or private car.