Volkswagen Passat B7 Window Lifter Door Rear Right O/S Regulator Unit 3AA959704B

Volkswagen Passat B7 Window Lifter Door Rear Right O/S Regulator Unit is an original component from the Window regulators and motors group, designed for the rear right side of the vehicle body. It ensures stable window guidance, proper operation of the lifting and lowering mechanism, and maintains the factory functionality of the rear passenger door.

Specifications and technical data

• SKU: 3AA959704B
• Mark: Volkswagen
• Condition: Used
• OEM Part Number: 3AA959704B
• Substitutable numbers: 3AA959704B, 3AA 959 704 B
• Location on the vehicle: Rear, Right
• Category: Window Motors & Regulators

Purpose and function in the vehicle

The window regulator is responsible for the precise movement of the window in the rear right door, working in conjunction with the factory electric controls. Its placement on the vehicle in the rear – right side area guarantees a perfect fit for the door structure and factory mounting points in the Passat B7.

This component is crucial for:

• maintaining smooth window movement without jamming,
• maintaining door tightness and reducing outside noise,
• proper cooperation with the window control electrical system.

Benefits of using an original window regulator

Using an original solution dedicated to Volkswagen allows for maintaining the factory operating parameters of the mechanism. Precise fit to the door reduces the risk of stress, accelerated wear of the guides, or excessive load on the control motor. As a result, the window moves evenly, and the system does not require any additional modifications.

The regulator from this design group is particularly recommended in situations where:

• mechanical damage to the guides or cables has occurred,
• the window falls, jams, or operates unevenly,
• replacement of the component is necessary after a collision or door intervention.

Installation characteristics

The regulator is prepared for installation in the rear right door of the Passat B7, maintaining the factory mounting layout. The design intended for a specific model facilitates the mechanic's work – there is no need to adapt holes, create custom brackets, or modify the electrical installation in the door.

During replacement, it is recommended to:

• check the condition of the window and door seals,
• verify the correct operation of the window control switch,
• inspect the electrical wiring in the door for abrasions and kinks.

Condition and service application

The component comes from the secondary market, which allows for economical repair while maintaining the original Volkswagen design. A used window regulator is a good choice for maintenance repairs when the priority is compliance with the factory solution and control of service costs.

This solution works well both in workshops specializing in the Volkswagen brand and in independent services that want to offer the customer a cost-effective, yet technically matched component.

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

Part selection and OEM markings

When selecting a window regulator for the Passat B7, it is crucial to compare OEM markings and interchangeable numbers with the vehicle documentation or disassembly data. In case of doubt, it is worth using the VIN number and consulting the equipment configuration to avoid differences resulting from the body version or production year.

For users interested in a broader context of using secondary market parts, selection procedures by VIN, and cost-effectiveness analysis of repairs, the expert guide Why it is worth buying used gearboxes and engines – facts instead of myths, which discusses the practical aspects of working with used components in modern cars, will be helpful.