50MM ALUMINUM BLACK TURBO TURBOCHARGER BOV BLOW OFF VALVE 35 PSI BOOST+SPRING EGR Tube * 1 Idler Bearing

* 1 Idler Bearing

compatible for Buick Skylark 1971-1970

Superseded Part Number: Front Passenger or Rear Driver Side Replacements

Superseded Part Number: CU4702

50MM ALUMINUM BLACK TURBO TURBOCHARGER BOV BLOW OFF VALVE 35 PSI BOOST+SPRING EGR Tube * 1 Idler BearingThe 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