what is this and where does it go?

this fell out of my supercharger when i was replacing the intakes gaskets. It believe its part of the pcv valve, its the only place it would fit back into.

My first thought was an orifice for ac lines or a plug that goes into the radiator. It looks yo have threads on it. Did it come out the bottom where the fins are? Or out the throttle body?

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2000 Silvermist GTP. CAI, 180 t-stat, stage 2 shift kit, u-bend and resonator delete, fastkatt tuned PCM, autolite P104's, 3.4 pulley, altenator wire upgrade.