50MM BILLET ALUMINUM GOLD TURBOCHARGER BOV BLOW OFF VALVE 35 PSI BOOST+SPRING Bellow Transom Repair Kit Superseded Part Number: HS26487PT-1

Superseded Part Number: HS26487PT-1

1989 Chevrolet Celebrity

2513300707

Interchange Part Number: 11703

For GMC Sierra 2500 HD Throttle Body Assembly V8 6

50MM BILLET ALUMINUM GOLD TURBOCHARGER BOV BLOW OFF VALVE 35 PSI BOOST+SPRING Bellow Transom Repair Kit Superseded Part Number: HS26487PT-1The Blow Off valve (BOV) is a pressure relief device on the intake tract to prevent the turbo's compressor from going into surge.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