Volkswagen VW Eos 1F Window Glass Regulator Lifter Rear Right O/S 1Q0839402B

Volkswagen VW Eos 1F Window Glass Regulator Lifter Rear 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 part of the body. Designed specifically for the Volkswagen Eos model, it ensures stable window guidance, proper cooperation with the control mechanism, and maintains the factory functionality of the window opening system.

Specifications and technical data

• SKU: 1Q0839402B
• Mark: Volkswagen
• Condition: Used
• OEM Part Number: 1Q0839402B
• Substitutable numbers: 1Q0839402B, 1Q0 839 402 B
• Location on the vehicle: Rear, Right
• Part type: Window Regulator
• Category: Window Motors & Regulators

Purpose and fitment

The presented window regulator is dedicated for installation in the rear right part of the Volkswagen Eos 1F generation convertible body. The design has been developed for the geometry of the doors and guides in this specific model, which allows for maintaining the correct window travel line, its tightness, and proper closing in various roof positions. Thanks to its factory origin from the Volkswagen brand, the component works with original mounts, wiring harness, and comfort control, without the need for modifications or adaptations.

Construction and function of the mechanism

The regulator belongs to the Window regulators and motors group, responsible for the controlled raising and lowering of side windows. The mechanism guides the window along a designated path, keeping it in the correct position relative to the seals and frame, which is particularly important in a body with moving roof elements. The design solution ensures:

• stable window guidance throughout the full range of motion,
• proper cooperation with the comfort control system,
• adequate stiffness of mounts in the rear right part of the vehicle,
• maintenance of factory window operating parameters on the rear passenger side.

Condition and performance characteristics

The item is offered as used, which allows for an economical repair of the window system while maintaining the manufacturer's original specification. The regulator comes from dismantling, thanks to which it retains factory fitment to the body and electrical installation, while at the same time representing a cost-effective alternative to a new replacement. Proper selection of parts according to the OEM number and available interchangeable numbers helps avoid compatibility issues and ensures correct window operation after installation.

Benefits of using an original regulator

Using an original window regulator in the Volkswagen Eos 1F translates into a number of practical benefits:

• maintenance of factory window guidance geometry in the rear right part of the body,
• reliable window closing and opening, essential when operating a folding roof,
• no need for modifications to mounts or electrical installation,
• consistency with other elements of the vehicle's window system. For Eos owners, this means faster installation, predictable mechanism operation, and reduced risk of additional adjustments after replacement.

Part selection and technical support

To select the correct regulator for a specific equipment version, it is worth using manufacturer markings, such as SKU or OEM part number, and also taking into account the placement on the vehicle. This avoids confusion between the left and right sides and between different body variants. If you are interested in a broader context of using used components in cars – including selection by OEM numbers, cost-effectiveness analysis, and practical verification procedures – check out the guide Why it is worth buying used gearboxes and engines – facts instead of myths, which discusses universal principles also useful when choosing other used subassemblies.

Expanding repairs within the window system

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