What "exactly" is it called?

[N2TRUX]

I know I should know the answer, but it seems I do not. While cleaning my motor I decided to replace a couple of sheet metal screws because my rag kept getting snagged on them. The screws were holding this "item" in place and in the process I broke the hard line off.

I have searched Google to death and can't come up with the correct name. I "think" it's called an a/c cycle but that doesn't come up. My buddy suggested High Pressure Cycling Switch (aka High Pressure Switch) but that comes up as the pressure switch in all my searching.


What "exactly" is it called, and where can I buy one?