Black connector for various locations
Audi A4 Diverter Valves
Cure the boost leak and restore power
Up to VIN 8D-X-199999, split is in the 1999 model year
This product was last offered at the strikethrough price on
05-07-2026
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Restore lost engine power, resolve underboost fault codes, and prevent compressor surge on your turbocharged Volkswagen or Audi.
Direct OE replacement pneumatic bypass valve to cure boost leaks, restore lost power, and eliminate that notorious deceleration "honk."
Cure the boost leak and restore power
From VIN 8D-X-200001, split is in the 1999 model year