Just bought a used Greddy Type RS BOV from another member. Unfortunately the vaccum fitting broke in shipping. I've tried the local hardware store hoping this would be a standard 1/8" NPT thread but it's not. It's a close fit but will not thread in. I'm assuming it's a specific thread size by Greddy. I'll try contacting Greddy direct tomorrow. If anyone has a spare fitting (from a busted unit) or know where to get a replacement please let me know.

Here are some pics: Click