Need help identifying part
 

https://cimg1.ibsrv.net/gimg/chevrol...83200326e1.jpg
Can someone tell me what this is? Not a car guy and not having any luck looking up. Top left appears to be a sensor of some sort but it does not have any electrical/electronic connections. Might also be a filter of some sort. It is connected to a hard plastic tube that terminates at bottom right to a rubber fitting.

2002 chevy s10 4wd

PCV valave

thanks