Can anyone tell me what this bracket is and where it goes?

 

I'm not sure but it looks like it bolted on and had part of the wiring harness clipped to it.
Nissan uses a lot of brackets to hold the wiring in place. Most of them are unnecessary. I have a box of them I've removed and replaced with zip ties.

 

It for sure bolted on. It's pretty heavy, so I think it's important. I just don't know where. Just finished head gaskets after long time of being torn down. This was left over.

 

Take a look at the side with the four holes. It's hard to tell from the pic but I don't any marks from bolt heads or any wear pattern from being bolted to something rigid. That tells me it probably had some of those push through wiring/hose clips attached to it. Some of the wiring brackets they use are very overbuilt.

 

Goes on the back of the engine, near the timing cover, right there.



larger photo here: http://imgur.com/PyjtsDF

 

Yeah, if it has small holes, then it likely holds O2 sensor wires

 

On this '05 engine, the oil pressure switch is hooked into the top hole, bottom one might be o2, yeah.

 

Thanks Chorca