VNE 4008172 Diverter Valve

Reliable Diverter Valve for Audi and Volkswagen Vehicles

The VNE Diverter Valve part number 4008172 is designed specifically for emission control in select Audi and Volkswagen models. This component plays a crucial role in maintaining proper vacuum system function and ensuring optimal engine performance.

• Compatible with Audi A4, A4 Quattro, RS6, TT, TT Quattro, and Volkswagen Passat
• Part number 4008172 ensures precise fit and function
• Essential for emission control and vacuum system regulation
• Durable construction for consistent performance
• Direct replacement for OEM diverter valves

Product Details and Functionality

The VNE Diverter Valve 4008172 is engineered to regulate pressure within the turbocharger system by diverting excess boost pressure back into the intake system. This helps prevent compressor surge and maintains the efficiency of the turbocharger. Designed for use in emission control vacuum systems, this valve supports the proper operation of turbocharged engines found in Audi A4, A4 Quattro, RS6, TT, TT Quattro, and Volkswagen Passat models. Its compatibility with these specific vehicles ensures a reliable fit and consistent performance.

Common Applications and Problem Resolution

• Prevents turbocharger compressor surge and boost leaks
• Maintains proper vacuum pressure in emission control systems
• Resolves issues related to poor engine response or hesitation
• Helps reduce check engine light triggers related to vacuum leaks
• Supports emission compliance by regulating pressure accurately

Installation Notes and Tips

Installation of the VNE Diverter Valve 4008172 should be performed by a qualified technician familiar with Audi and Volkswagen turbocharged engines. Ensure all vacuum lines are properly connected and free of cracks or damage. Verify that the valve is securely mounted and that no boost leaks are present after installation. It is recommended to inspect related vacuum hoses and clamps during replacement to maintain system integrity.

Quality Assurance and Warranty Information

VNE manufactures this diverter valve to meet or exceed OEM specifications for durability and performance. While specific warranty details may vary, VNE products typically come with a limited warranty covering defects in materials and workmanship. Using part number 4008172 ensures a reliable replacement that supports the emission control and vacuum system requirements of your Audi or Volkswagen vehicle.