Pressure sensor pellet
 

Im missing the clear plastic pellet in my pressure sensor tube. Where can i get one?
What would i ask for in a parts store and Is there a technical term for it?

It's an orifice. The Mazda dealer has them. You can find the part number from the parts fische at http://www.iluvmyrx7.com/2nd_gen_manuals.htm the ENGINE section, Location 2-K15 or 2-H15, all depending on which model.

Or download the INDEX and look for ORIFICE and the location in the parts fische.