1968 z28 RH smog tube 3890414
 

I have had this RH smog tube for many years. This is guaranteed factory original smog tube. Its basically NOS and has the original black phosphate coating on it. Looks kind of Olive colored. I did have it screwed into a manifold at one time just to check the threads on the manifold.
There is a slight scratch in the middle of it that you can see in the picture. $225 shipped in the lower 48.

Here’s a couple of pics

Smog Tube
 

PM sent... Danny

Payment Pending.

Sold!!