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Dude, do you have a Diverter valve or a Blow off valve?

A diverter valve will have two ports and a small nipple for the vacuum pipe.

A Blow off valve or dump valve (same) will have the same but a trumpet sort of port also to let the pressure (whoosh) out.

basically either either way fitting is the same.

Remove you old Bosch black Diverter valve, it'll be joined onto the TIP and another pressure hose, located at the top of the engine cover towards the right hand side.

Remove the Bosch valve inc the jubilee clips from the TIP and pressure hose, pull off the current vacuum pipe on top of that pipe and replace with your valve.

I hope this helps.
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