Tial MVS Replacement Diaphragm. If you are experiencing a lack of boost, over boosting, or general inconsistencies in boost then you could have a ripped or torn diaphragm. A slight pinhole in the diaphragm will affect your boost pressure so thoroughly inspect your diaphragm if you suspect that yours may be leaking.
- Works with Tial MV-S external wastegates
- Genuine Tial product
- Sold individually