Hey Gang---Can someone please help me out? I picked up a clean 240Z shell (plenty to be found here in sunny San Diego) a few months back to build a 240ZT cause I couldn't bare to experiment on my series one 240. The car came with some extra stuff. Anyway, I found this part (see attachment) in the car and I'm not too sure what it is. I'm thinking it's either a 280ZX fuel pump, or regulator; I'm not real sure though. Actually, I'm clueless.

I would really appreciate your experience on this matter.

It's an auxillary-air-control (AAC) valve assembly. It controls idle speed, including fast-idle & hot-start flare-up.

It doesn't belong on a 240Z.....

Hey Ben--Thank you! Thank you very much. Wow, I was way off the mark wasn't I? Well, I definitely owe you one.

It's going in the trash since I refuse to use AC on ant of my Z cars...now, my Maxima is a different story as it designed to comfort, not performance (although, she can easily chew up most Hondas with little to no effort).

Ben, once more, I wish to express my appreciation for your time and expertise---Jerry