Does anyone have the Nissan part number for this part? I have no idea what it's called and I can't find it in the Nissan part diagrams.

Yeah, I had a hell of a time finding that part on the Parts CD. It was shown someplace totally off the wall like in electrical, or something equally stupid. Part number is 27195-E4400.

They list it as a heater part. Go figure.

They list it as a heater part. Go figure.

I suppose the other option would be to list it with other coolant hoses and connectors but it really is part of the heater system.

Yeah, once I found it I could see the logic of it, but I kept figuring that since it screws into the cylinder head, that's where it would be listed. Wrong.