Replaces the failure-prone factory diaphragm for rock-solid boost control
For vehicles from the 2021 model year only.
Audi A4 Diverter Valves
- 034 Motorsport
- APR
- Burger Motorsports
- CTS
- ECS
- Euro Sport
- Forge
- Go Fast Bits
- Hardware
- Hose
- OE
- TurboSmart
Replaces the failure-prone factory diaphragm for rock-solid boost control
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
2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!
Restore lost engine power, resolve underboost fault codes, and prevent compressor surge on your turbocharged Volkswagen or Audi.
2X Entries For Our 25th Anniversary Sweepstakes!
Cure the boost leak and restore power
From VIN 8D-X-200001, split is in the 1999 model year
Direct OE replacement pneumatic bypass valve to cure boost leaks, restore lost power, and eliminate that notorious deceleration "honk."
2X Entries For Our 25th Anniversary Sweepstakes!
From VIN 8D-X-200001, split is in the 1999 model year