I can't place this part?

I have hunted all over the web searching under every term I could think of to find out what this is. Can someone please shed some light on what this is. I put the key next to it show the size of it.

 

Tach drive??


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To me it looks like a water neck but I have no idea for what. I see the "BW" on it and the threads look taperd like a pipe thread. If you put "cast water neck" into Google and hit the "images" button, you'll see plenty of similar parts. I rest my case

 

It look like a mini water neck.

 

The BW is Bendix-Westinghouse and that part is a discharge port fitting for a truck air brake compressor.

 

English car? I don't have anything from across the pond any more but for some reason it looks familiar.

Tim

 

It's a Plinkton Port used to feed coolant to the Hoover Slats.

 

I'm guessing a foreign part for a heater hose connection...

 

John Evans has it. I 've seen them in really nice cast brass, too.

 

^^^^yep what he said^^^^^

 

The BW is Bendix-Westinghouse and that part is a discharge port fitting for a truck air brake compressor.

This one is brass, thanks for all the help. this was going to bug me until it was solved.

 

Less than 15minutes. Damn Hamb, your Good!

 

X2. Lots of guys that know some shit!