i broke it off and cant tell......please help, thanks.....

 

Can you provide a picture of where you broke it off at?

Also, if you place a quarter next to it and take a photo, it might give a better idea of size. As it stands now, it's impossible to tell if the diameter is .5 inch or 5 inches. There is nothing to provide scale.

Also what does the other side of the piece look like?

And lastly, what make/model/year/trim of car did this come off of?

 

Thanks man.......umm sorry about the noobness, but the sensor came from like the center of the top of the block, i didnt see what was connected to it on the wiring harness.....but here are some more pics of it to tr n get an idea.......

 

Knock sensor.

 

Thank you sir.......

 

I agree looks like knock sensor

 

thanks fellas.....