50MM BILLET ALUMINUM GOLD TURBOCHARGER BOV BLOW OFF VALVE 35 PSI BOOST+SPRING Bellow Transom Repair Kit 1987 BMW 635CSiFor Exact Years

1987 BMW 635CSiFor Exact Years and Models

Interchange Part Number: 11703

Superseded Part Number: HS26487PT-1

68046030AA

1999 Volkswagen Golf TDI Hatchback 4-Door Hatch

50MM BILLET ALUMINUM GOLD TURBOCHARGER BOV BLOW OFF VALVE 35 PSI BOOST+SPRING Bellow Transom Repair Kit 1987 BMW 635CSiFor Exact YearsThe 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