Volkswagen Eos 1F Convertible Roof Hydraulic Pump Top Nozzle SET X2 1Q0871791B

Volkswagen Eos 1F Convertible Roof Hydraulic Pump Top Nozzle SET X2 is an original component from the Volkswagen group, designed to operate the folding roof mechanism in the Eos 1F model. The nozzle set ensures precise operation of the hydraulic system, which translates into smooth opening and closing of the roof and stable performance of the entire system.

Specifications and technical data

• SKU: 1Q0871791B-2
• Mark: Volkswagen
• Condition: Used
• OEM Part Number: 1Q0871791B
• Substitutable numbers: 1Q0871791B, 1Q0 871 791 B, 1Q0 871 791 C, 1Q0871791C
• Category: ABS & Stability Hydraulic Units

Purpose and function in the vehicle

The convertible roof hydraulic pump in the Volkswagen Eos 1F is responsible for generating the appropriate pressure in the system, which enables efficient folding and unfolding of the roof. The integrated nozzle set helps in precisely controlling the flow of the working medium, which reduces the risk of jerking, uneven operation of the actuators, or incomplete closing of the roof structure.

This element is particularly important in vehicles operated in variable weather conditions, where the roof system is used frequently. An efficient hydraulic pump minimizes mechanical stress on other components, which contributes to their longer service life.

Set construction and benefits of use

The presented set includes a hydraulic pump along with two nozzles, which allows for comprehensive maintenance of a key part of the roof system without the need to source individual elements. This solution:

• facilitates service and shortens repair time,
• ensures component consistency within a single system,
• reduces the risk of leaks resulting from mismatched parts.

Thanks to the use of a component from the Volkswagen OE line, factory operating parameters of the system are maintained, and installation does not require any modifications to the vehicle's hydraulic or electrical installation.

Condition, fitment, and installation

The offered convertible roof hydraulic pump with nozzles is a used part, which allows for an economical repair while maintaining original manufacturing quality. The element is designed for the Volkswagen Eos 1F model, and its construction allows for installation in the place provided by the manufacturer, maintaining proper positioning and mounting points.

Before installation, it is recommended to:

• verify compatibility by OEM part number and interchangeable numbers,
• check the condition of hydraulic hoses and connectors,
• bleed the system after installation, in accordance with the manufacturer's service procedure.

Importance for safety and driving comfort

An efficient roof hydraulic system has a direct impact on the comfort of using the vehicle and on safety – a properly closed roof reduces noise and ensures tightness and body stability. The original hydraulic pump with nozzles helps maintain the correct operating parameters of the system, which is especially important in cars used daily and on longer trips.

A properly selected element reduces the risk of failure during the roof opening or closing cycle, which could lead to vehicle immobilization or the need for costly repairs of additional sub-assemblies.

Related components and further diagnostics

The roof hydraulic system works with the electronics supervising the mechanism's operation and with position sensors. In the case of symptoms such as slowed roof operation, intermittent performance, or error messages, it is worth performing full diagnostics, covering both the hydraulic part and the control system. For a better understanding of the principles of selecting elements in complex drive and transmission systems, the article on our blog may be helpful: Clutch and dual-mass flywheel – diagnostics and selection of parts for the drive system.

If you are planning a comprehensive repair or upgrade of the zone responsible for stabilization and traction control in your Volkswagen and need other elements from the same group, such as control modules, wheel speed sensors, or signal cables, check the available parts in the ABS and ESP system Volkswagen category.