Was the rave valve cap updated or did i get the wrong part?

[drake1]

So for my 1997 787 I ordered new rave caps, or power valve piston as there called the cap with a raised collar is what was in the raves and the one I got in the mail has no collar. The style I pulled out of the rave is listed as the exhausted water valve. What one is correct to use with the raves?

 

[mikidymac]

The one on the right looks like the newer ones for the injected 951’s