I have an 04 Coupe that I bought used and on the back of the air intake in the middle of the car is a washer where it looks like something should be (circled in the pic). It looks like nothing has ever been connected to it because there are no marks or anything on it like it has been used. Can someone please tell me what this is? I forgot to ask my dealer last time I was there and it's a 50 minute drive. Thanks.

need some better pics!

Nothing goes there, really. Many items in your engine bay are shared among many different Nissan cars, maybe a different car shares this and has a wire loom attached there.

I know the Pop charger heat shield screws in there. Other than that I have no idea, it's like that on my G also.

Mine is the same way, nothing on it. I have had the car since new and it has never had anything there.

Sorry about the pics but I'm new at this and haven't taken the time to figure out how to show the larger pics yet. Do you need to have those on a site like photobucket and then just link to them? The one I included was the largest size it would let me upload. But thanks everyone for letting me know that nothing really goes there, it was driving me nuts!