Camshaft position sensor at front of engine?

Hi everyone - On my 05 pathfinder LE there are 3 sensors at the front of the engine where the camshaft gears look like they are housed. I took one out and it looks like the camshaft position sensor everyone talks about being at the back of the engine.

What are those if NOT the camshaft position sensors?

I have attached a pic. One is of my V6 3500 and the other is a pic off internet but shows the front in which I circled where the sensors in question come from.

FYI...sorry if this is posted twice, the site went bead after I selected "submit"

Thanks!!

Attached Images

	05 pathfinder cam sensor1.jpg (343.5 KB)
	front of engine.jpg (53.8 KB)