Audi A4 B7 Convertible Hydraulic Roof Pump Motor Actuator Unit 8H871611A

Audi A4 B7 Convertible Hydraulic Roof Pump Motor Actuator Unit is an original component of the soft top opening and closing system, designed for convertible models. As part of the Convertible roofs, cars and parts group, it is responsible for generating the hydraulic pressure required for the smooth operation of the mechanism. Using an OEM component allows for maintaining the factory operating characteristics of the roof, without the need for replacements with uncertain parameters.

Specifications and technical data

• SKU: 8H871611A
• Mark: Audi
• Condition: Used
• OEM Part Number: 8H871611A
• Substitutable numbers: 8H871611A, 8H8 716 11A
• Category: Hardtops, Roof Panels & Parts

Function and role in the convertible roof system

The presented drive unit is the central element of the hydraulic system responsible for controlling the roof actuators in the Audi A4 B7 Convertible. The pump, together with the electric motor, generates the appropriate operating pressure, which enables:

• controlled raising and lowering of the roof structure,
• stable positioning of individual frame segments,
• maintaining proper synchronization of actuator operation,
• reduction of mechanical loads in joints and guides.

Thanks to the use of an original Audi solution, compliance with the factory control logic and the operating parameters of the modules responsible for roof operation is maintained.

Benefits of using an original hydraulic pump

Using this unit in place of a worn or damaged component allows for restoring the proper operation of the entire roof system. Key advantages include:

• Factory compatibility with the vehicle's electrical and hydraulic installation,
• appropriately selected operating pressure and efficiency, matched to the weight and geometry of the roof,
• consistent cooperation with position sensors and the body control module,
• reduction of the risk of system errors and roof failure messages.

Choosing a used OEM component is a beneficial solution for users who want to maintain the original vehicle specification at reasonable repair costs.

Purpose and service application

The Audi A4 B7 Convertible Hydraulic Roof Pump Motor Actuator Unit is primarily used in situations where problems with roof operation occur, such as slow movements, stopping mid-cycle, or a complete lack of response to controller commands. In workshop practice, this element is replaced, among others, in cases of:

• internal damage to the pump or electric motor,
• excessive noise from the hydraulic system,
• insufficient pressure in the actuator circuit,
• diagnostic confirmation of a faulty roof drive unit.

Thanks to the original design, installation is similar to the factory process, which facilitates work for service centers specializing in Audi convertibles.

Condition, origin, and quality aspects

The offered element is a used Audi part, sourced from dismantling, which allows for maintaining the original roof system specification. Such components are often chosen by workshops and users who prefer OEM parts with a proven design. In operational practice, this translates into:

• maintaining predictable roof operating characteristics,
• reducing problems with fitting connectors and mounts,
• easier diagnostics during future inspections.

Combined with properly functioning actuators and a sealed hydraulic installation, the pump provides a solid foundation for restoring the full functionality of the convertible roof.

Roof system expansion and auxiliary materials

If you are planning a comprehensive repair or upgrade of the convertible roof area in your Audi and need other elements from the same group, such as actuators, seals, or guides, check the available parts in the Convertible roofs, cars and parts Audi category.

When performing service work on the roof system and other comfort systems, it is worth paying attention to the condition of the electrical installation, power supply, and modules responsible for climate control in the interior. Practical tips on selecting used OEM components and maintenance schedules can be found in the article Air conditioning and heating – part selection and maintenance for year-round comfort, which organizes the most important service procedures and facilitates the planning of maintenance work.