Autopart International 1902-320912 Turbocharger Bypass Diverter Valve

The Autopart International 1902-320912 is a turbocharger bypass diverter valve (also known as a turbo cut-off valve or recirculation valve) designed as a direct replacement for OEM part number 06H145710D. This critical emission control component is essential for maintaining optimal turbocharger performance and efficiency in turbocharged engines.

Function and Purpose:

This diverter valve serves as a turbo pressure relief valve that redirects unused turbocharger boost pressure back to the intake pipe ahead of the turbo when the throttle is closed. This prevents compressor stall, maintains optimal turbocharger efficiency, and ensures maximum throttle response. The valve performs two crucial functions: sealing pressure under boost to deliver peak power, and releasing pressure when you lift off the accelerator.

Key Features:

• Direct replacement for OEM part numbers 06H145710D, 06F145710B, 06F145710C, 06F145710G, 06F201282, and 06F201282B
• Compatible with 1.4L, 1.8L, and 2.0L TSI and TFSI turbocharged engines
• Prevents turbocharger compressor stall and bearing damage
• Eliminates chattering sounds caused by boost pressure reversal
• Resolves loss of boost, extended turbo lag, and sluggish throttle response
• Ensures compliance with emission control standards

Cross-Reference Part Numbers:

911-240, G62001, 7D1160, 701830130

If the diverter valve sticks closed, remaining boost pressure can force backwards through the turbocharger causing compressor stall, bearing strain, and potential turbo failure. If stuck open, boost pressure continuously diverts causing poor acceleration and reduced performance. Regular replacement of this component maintains turbocharger longevity and engine performance.