Vauxhall Opel Astra G Wiper Motor Rear Window Actuator Unit 90559440

Vauxhall Opel Astra G Wiper Motor Rear Window Actuator Unit is a component from the Wiper motors and linkages group, designed for operation on the vehicle's rear window. It provides a stable drive for the wiper arm, which translates into safe visibility in difficult weather conditions. This used component is a sensible choice for drivers looking for a technically proven solution at an attractive price.

Specifications and technical data

• SKU: 90559440
• Mark: Vauxhall (Genuine OE)
• Condition: Used
• OEM Part Number: 90559440
• Substitutable numbers: 90559440
• Location on the vehicle: Rear
• Category: Wiper Linkages, Transmissions & Motors

Purpose and function in the wiper system

The rear wiper motor in the Astra G is responsible for driving the wiper arm on the rear window, performing smooth operating and return movements. Its placement in the rear area of the vehicle allows for direct transmission of torque to the wiper mechanism, which is crucial for effectively clearing water, mud, and debris from the glass.

Thanks to proper fitment to the body structure and electrical system, this component works with the factory wiper switch and control system, maintaining the original operating logic (intervals, continuous operation, rest position).

Benefits of using a used wiper motor

Using a pre-owned rear window wiper motor is a solution that allows you to reduce repair costs while maintaining adequate quality. The original design ensures proper fitment to the mounts, wiper axis, and electrical harness, which facilitates installation and reduces the risk of operational issues.

In practice, this means:

• maintaining the factory operating geometry of the rear window wiper,
• proper cooperation with the vehicle's electrical system,
• no need for modifications to mounts or adapters.

For many users, this is a technically safe compromise between cost and functionality, especially in the case of older Astra G models.

Installation and operational aspects

The rear window wiper motor is mounted in the rear part of the body, in the immediate vicinity of the wiper arm axis. Such placement limits mechanical losses in the gearbox and allows for precise setting of the wiper blade's rest position. When replacing, it is important to maintain the correct mounting position and ensure the electrical connector is properly connected to avoid an incorrect operating range.

Regular inspection of the condition of the wiper arm and blade, as well as the seals around the axis, helps extend the life of the motor by reducing the risk of moisture entering the drive housing.

Selection of used parts and technical knowledge

When choosing a used wiper motor, it is worth relying on vehicle identification data and part numbers to ensure full compatibility with a specific version of the Astra G. Proper component selection has a direct impact on durability, operating smoothness, and the safety of using the car in rain and snow.

If you want to better understand what professional selection of used drive components looks like, what the common myths and facts about such subassemblies are, and how to approach the topic of costs and profitability, it is worth checking out our expert guide: Why it is worth buying used gearboxes and engines – facts instead of myths. Although it mainly concerns powertrains and transmissions, the procedures and approach to technical condition analysis presented there are also useful when evaluating other used components.

Expanding the wiper system in Vauxhall vehicles

If you are planning a comprehensive repair or upgrade of the rear window visibility zone in your Vauxhall and need other elements from the same group, such as additional drives, linkages, or related mechanisms, check out the available parts in the Vauxhall wiper motors and linkages category.