Audi A4 RS4 B8 4.2 FSI CFSA Vacuum Hose Line Pipe Driving Tube 8K0253760F

Audi A4 RS4 B8 4.2 FSI CFSA Vacuum Hose Line Pipe Driving Tube is an original vacuum system component designed for use with the 4.2 FSI petrol engine. Thanks to its precise fit to the factory installation, it ensures stable vacuum routing and predictable operation of related components. This is a practical solution for users looking for a proven OEM component for professional repair or service.

Specifications and technical data

• SKU: 8K0253760F
• Mark: Audi
• Condition: Used
• OEM Part Number: 8K0253760F
• Substitutable numbers: 8K0253760F, 8K0 253 760 F
• Fuel type: Petrol
• Category: Vacuum Pumps

Purpose and function in the vacuum system

The described vacuum hose is a component of the system working with the vacuum pump in Audi vehicles with the 4.2 FSI petrol unit. It is responsible for the safe routing of vacuum to receivers, which is important for the operation of vacuum-controlled components and the stability of engine parameters. The design of the hose is adapted to the thermal and pressure loads typical for high-performance petrol units, which promotes long-term, repeatable operation.

Compatibility with the 4.2 FSI CFSA unit

The hose has been designed specifically for the CFSA 4.2 FSI engine in the B8 generation Audi A4 RS4. This means:

• factory fit to the engine bay geometry,
• compatibility with original mounting points,
• correct vacuum routing throughout the entire operating range of the petrol unit.

As a result, installation is straightforward, without the need for modifications or non-factory workarounds, which is essential for maintaining the integrity of the entire vacuum system.

Characteristics of the used component

The offered hose comes from dismantling and is a used component, which allows for combining reasonable cost with maintaining the manufacturer's original specification. This type of OEM component usually fits better into the existing system than replacements with universal geometry, which reduces the risk of leaks or improper hose routing. For workshops and individual users, this means the possibility of an economical repair while maintaining the factory manufacturing standard.

Benefits of using an original vacuum hose

Using an original hose in an Audi vacuum system with a petrol engine brings a number of practical benefits:

• maintaining the vacuum flow path designed by the manufacturer,
• reducing the risk of leaks resulting from shape mismatch,
• easier system diagnostics due to compliance with service documentation,
• consistency with other components of the vacuum system.

For high-power vehicles such as the RS4 B8, maintaining the proper operation of the vacuum system is important for both engine stability and driving comfort.

Technical support and additional information

To better understand the relationships between the fuel system and components working with vacuum in a petrol engine, it is worth reading the guide on diagnostics and component selection by OEM numbers – this is discussed in detail in the article Fuel system – injectors, pumps and fuel tank: maintenance and regeneration, where you will find practical tips on the operation of modern petrol-powered units.

If you are planning a comprehensive repair or upgrade of the vacuum system area in your Audi and need other elements from the same group, such as vacuum hoses, supply pipes, or additional sections of vacuum lines, check the available parts in the Audi vacuum pumps category.