50MM BILLET ALUMINUM GOLD TURBOCHARGER BOV BLOW OFF VALVE 35 PSI BOOST+SPRING Bellow Transom Repair Kit 1999 Volkswagen Golf TDI Hatchback

1999 Volkswagen Golf TDI Hatchback 4-Door Hatch

1989 Chevrolet Celebrity

1987 BMW 635CSiFor Exact Years and Models

For GMC Sierra 2500 HD Throttle Body Assembly V8 6

Interchange Part Number: 11703

50MM BILLET ALUMINUM GOLD TURBOCHARGER BOV BLOW OFF VALVE 35 PSI BOOST+SPRING Bellow Transom Repair Kit 1999 Volkswagen Golf TDI HatchbackThe Blow Off valve (BOV) is a pressure relief device on the intake tract to prevent the turbo's compressor from going into surge. When the throttle is closed rapidly, the airflow is quickly reduced, causing flow instability and pressure fluctuations. Surge can eventually lead to thrust bearing failure due to the high loads associated with it. Blow Off valves use a combination of manifold pressure signal and spring force to detect when the throttle is