Audi A4 B8 A5 8T Non Return Vacuum Active Charcoal Valve Pipes 06H906517T

Audi A4 B8 A5 8T Non Return Vacuum Active Charcoal Valve Pipes is a component of the vacuum system responsible for the controlled flow of fuel vapors between the lines and the active charcoal filter. Thanks to its precise design, which complies with OEM Audi solutions, it ensures stable system operation and proper control of the vapor circulation in the engine.

Specifications and technical data

• SKU: 06L133781M
• Mark: Audi
• Condition: Used
• OEM Part Number: 06L133781M
• Substitutable numbers: 06L133781M, 06L 133 781 M, 06H906517T, 06H 906 517 T
• Part type: Air Bypass Valve
• Category: Air Bypass Valves

Purpose and technical function

The described non-return valve operates within the vacuum lines and the active charcoal system, responsible for the one-way flow of the medium in the installation. Its task is to maintain the correct flow direction and tightness, which limits unwanted vapor backflow and stabilizes the engine's operating parameters. In A4 B8 and A5 8T series vehicles, a properly functioning valve in this location affects:

• proper cooperation of the vacuum system with the intake system,
• effective use of the active charcoal filter,
• maintenance of stable engine operating conditions across various load ranges.

Construction and characteristics of the component

As a part from the Bypass valves group, this component is designed to operate in an environment of variable pressures and temperatures. The valve body and connection ports are adapted to work with factory lines, which facilitates installation in the original location without the need for system modifications. The design solution used by the Audi brand ensures:

• appropriately selected flow characteristics for the vacuum system,
• compatibility with factory pipes leading to the active charcoal filter,
• consistency with the factory engine control unit.

Benefits of using an original component

Choosing an original solution from the bypass valves group allows for maintaining the factory operating parameters of the system. The non-return vacuum valve working with the active charcoal and intake lines minimizes the risk of diagnostic errors related to leaks or improper flow. Key advantages of using this component include:

• maintaining compliance with the factory engine controller calibration,
• reducing problems with unstable idle speed resulting from uncontrolled vacuum changes,
• easier system diagnostics thanks to the predictable operating characteristics of the valve.

Condition and service application

The component is offered in used condition, which makes it a reasonable choice for servicing vehicles where maintaining the original specification while optimizing repair costs is important. This type of part is particularly suitable for replacements resulting from leaks, mechanical wear, or flow problems in the area of vacuum lines and the active charcoal system.

Related components and additional information

If you are planning a comprehensive repair or upgrade of the vacuum system and fuel vapor circulation area in your Audi and need other components from the same group, such as additional valves, connectors, or pipe sections, check the available parts in the Audi Bypass valves category. When selecting used technical system components, it is worth paying attention to experiences with other subassemblies – you can read more about when a used original is a reasonable choice and how to approach its verification in the article Spider web on the windshield? Why it is better to choose a used original with the manufacturer's logo when replacing.