Blow Off Valve for Vauxhall Corsa, Chevy Cruze and Sonic 1.4 Turbo Engines. Vauxhall Corsa 1.4 Turbo'Black Edition'.
This valve gives greater longevity than the diaphragm (OEM) valves but also benefits from its ability to be fitted with different springs when the boost pressure has been increased or the engine has been modified.