30-PSI ADJUSTABLE GOLD RFL ALUMINUM TURBO BOOST TURBOCHARGER BLOW OFF VALVE BOV Fog Light Assemblies Interchange Part Number: 620-421 620710

Interchange Part Number: 620-421 620710 674-59665

Other Part Number: 15070473

2 K7274 Front Stabilizer Bar Link

Interchange Part Number: 171833

30-PSI ADJUSTABLE GOLD RFL ALUMINUM TURBO BOOST TURBOCHARGER BLOW OFF VALVE BOV Fog Light Assemblies Interchange Part Number: 620-421 620710The 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