Audi RS4 B8 4.2 FSI Quattro CFSA Petrol Engine Vacuum Pump 8E0927317H

Audi RS4 B8 4.2 FSI Quattro CFSA Petrol Engine Vacuum Pump is a factory-original component of the vacuum system in a petrol engine, designed specifically for the 4.2 FSI Quattro unit. It is responsible for the stable generation of vacuum necessary for the operation of engine control systems, power assistance, and selected safety systems, ensuring predictable and repeatable performance of the entire powertrain. Thanks to a design compliant with the Audi vacuum pumps standard, the part maintains full compatibility with the vehicle's factory installation.

Specifications and technical data

• SKU: 8E0927317H-1
• Mark: Audi
• Condition: Used
• OEM Part Number: 8E0927317H
• Substitutable numbers: 8E0927317H, 8E0 927 317 H
• Fuel type: Petrol
• Category: Vacuum Pumps

Purpose and function in the powertrain

The presented vacuum pump is a component designed for a spark-ignition petrol engine, which is crucial for proper cooperation with the characteristics of the 4.2 FSI unit. It is responsible for generating stable vacuum, which is used, among others, by systems controlling engine operation and selected auxiliary modules, influencing the refinement and response to load. A properly selected vacuum pump reduces the risk of system performance drops, unstable idle, or errors in the operation of accessories. Original Audi design ensures appropriate flow and sealing parameters, which translates into predictable vehicle behavior across a wide range of operating conditions.

Compatibility and fitment for Audi RS4 B8 4.2 FSI Quattro CFSA

The pump has been designed for use in the Audi RS4 B8 model with the 4.2 FSI Quattro CFSA engine, making it compatible with factory mounting points and serial vacuum connections. The lack of need for installation modifications allows for plug-and-play style assembly, which shortens service time and minimizes the risk of leaks resulting from the adaptation of replacements. Choosing an element from the Vacuum pumps group dedicated to a specific power unit is particularly important in high-power cars, such as the RS4 B8, where the stability of operating parameters has a direct impact on performance and driving safety.

Performance characteristics and advantages of using a used part

The offered vacuum pump comes from the used parts segment, which, in the case of original Audi components, represents a reasonable compromise between cost and quality. Factory manufacturing ensures the preservation of the manufacturer's original design assumptions while allowing for cost reduction compared to new replacements with uncertain parameters. In practice, this means:

• preservation of factory geometry and fitment for the 4.2 FSI Quattro unit,
• consistency with the original vacuum and engine control system,
• more predictable behavior than in the case of many cheaper replacements. If you want to better understand the relationships between power supply and control elements in a petrol engine and correctly select components by OEM numbers, the following article will be helpful: Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration.

Application in service and vacuum system modernization

Replacing the vacuum pump is recommended in the event of symptoms such as a decrease in the effectiveness of vacuum-dependent systems, unstable operation of accessories, or diagnostic errors related to insufficient vacuum. Using an original Audi element allows for the restoration of correct operating parameters without the need to interfere with the engine structure. In the case of older, high-performance petrol units such as the 4.2 FSI, choosing a used factory part from a reliable source often proves more predictable than installing a new replacement of unverified durability. This topic is discussed more broadly in the entry: The myth of the ideal new part: why is a used factory part the only reasonable solution for older cars?.

Service expansion – other Audi vacuum pumps

If you are planning a comprehensive repair or modernization of the engine area in your Audi and need other elements from the same group, such as additional vacuum pumps, mounting elements, or related control modules, check the available parts in the Audi vacuum pumps category.