[Enriquez2000]

Cant seem to find an answer. Without pulling it off it lools like maybe 5/8?

Anyone clarify? Im making my own OCC set up

 

[Macgyver]

I believe it is 5/8".

@pboglio has his apart and can make a good call on this.

 

[Enriquez2000]

I got a pcv and it calipered at .39 which makes it take a 3/8 hose

Just so this is answered