Audi RS4 B8 4.2 FSI QUATTRO CFSA Vacuum Line Solenoid Valve 037906283D

Audi RS4 B8 4.2 FSI QUATTRO CFSA Vacuum Line Solenoid Valve is a component from the Valves group, designed for the vacuum system in the high-performance 4.2 FSI QUATTRO engine. It is responsible for precise vacuum control in selected engine circuits, which translates into stable operation, predictable throttle response, and correct interaction with the engine control electronics.

Specifications and technical data

• SKU: 037906283D
• Mark: Audi
• Condition: Used
• OEM Part Number: 037906283D
• Substitutable numbers: 037906283D, 037 906 283 D
• Category: Valves

Purpose and function of the vacuum solenoid valve

The presented vacuum solenoid valve has been designed for the demanding V8 petrol engine in the Audi RS4 B8 model with quattro drive. In the engine control system, it acts as a precise vacuum flow regulator, which is important for the operation of actuators, idle stabilization, and maintaining proper dynamics during load changes.

Thanks to its factory design, the valve works with the original engine equipment, ensuring:

• consistency with the factory Audi control system,
• proper response to signals from the control unit,
• maintenance of correct operating parameters across a wide RPM range.

Benefits of using an original Audi valve

Using an original vacuum solenoid valve in the Audi RS4 B8 4.2 FSI QUATTRO CFSA allows you to maintain the factory engine operating characteristics. The component from the Valves group is structurally matched to the specific engine unit, which reduces the risk of compatibility issues, ECU errors, or unstable operation under various loads.

Key advantages of this solution include:

• consistency with the original vacuum system architecture,
• predictable engine behavior after installation,
• reduced risk of leaks and improper control of actuators.

Characteristics of the used component

The offered vacuum solenoid valve is a secondary market component, sourced from dismantling. This type of part allows for an economical repair while maintaining the original Audi design, which is particularly important in specialized units such as the 4.2 FSI QUATTRO CFSA. In many cases, a used OEM component provides better compatibility and durability than aftermarket replacements of uncertain origin.

Choosing a used vacuum solenoid valve is often a reasonable compromise between repair costs and maintaining engine performance parameters close to factory specifications.

Application in exhaust gas recirculation systems

In modern petrol and diesel engines, vacuum solenoid valves work with various components, including those responsible for exhaust gas recirculation. To better understand the role of such components in the entire emission control system, it is worth reading an article describing the EGR system and the benefits of using secondary market components: EGR: what is it and why is it worth considering used EGR valves.

Selecting other valves for Audi

If you are planning a comprehensive repair or upgrade of the engine area in your Audi and need other elements from the same group, such as control valves, vacuum valves, or auxiliary valves, check the available parts in the Audi Valves category.

More about choosing used parts

When planning repairs for advanced models such as the RS4 B8, the question often arises whether it is better to opt for refurbishment or a used original part. A broader discussion of this issue, along with practical examples from the market, can be found in the material: Refurbished or used original – which part to choose for repairs?.