Yes not sure who made them but they are new old stock most of the time they were painted engine color but the factory ones appear to be black and then painted engine color.
The one on my 66 383 is black and painted engine color from the factory I will post pic later.Thanks.
My cars are Street hemi and the other has chrome valve covers. thus both PCV valves should be black phosphate
Thats correctThe one on my 66 383 is black and painted engine color from the factory I will post pic later.