UNIVERSAL ALUMINUM PINK TYPE-S RS RZ 2-BOLT FLANGE TURBO BLOW-OFF VALVE 30 PSI Knock Sensors Interchange Part Number: 4020006

Interchange Part Number: 4020006

7L V8 LS1 / LS6 engines only

Compatible With: 9005+H11+9145

Superseded Part Number: 79428+6924033030C0

5L 3498CC V6 DOHC

UNIVERSAL ALUMINUM PINK TYPE-S RS RZ 2-BOLT FLANGE TURBO BLOW-OFF VALVE 30 PSI Knock Sensors Interchange Part Number: 4020006The 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