The Turbosmart Kompact Plumb Back is a fully recirculating billet aluminum blow-off valve with a 25mm fitting. It suits the Audi A4 and S3 1.8T 20V plus a wide range of other 25mm turbo applications across Audi, VW, Saab, Porsche and Volvo. The plumb-back design returns all excess boost pressure back into the intake, ideal for those who want quality BOV performance without any vent noise.
Specifications
| Type | Kompact Plumb Back blow-off valve |
| Operation | Recirculating (plumb back) |
| Fitment | Audi A4 / S3 1.8T 20V and other 25mm applications |
| Size | 25mm |
| Body | Billet aluminum |
Documents: Installation Instructions (PDF)
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