TB48 part identification

[alterastro]

Hi all

Can anyone identify this part for me? it sits in the intake manifold and has been disconnected since I got it many years ago...

87418

I can't find it on any parts diagrams, so your insight and what it does (or should do!) would be appreciated.

Cheers

Nick

[mudski]

What is it joined to?Where does that vertical rod go?

Probably something to do with emissions control I'd say.