Hello everyone, I was hoping that someone could tell me what size is the quick connect fitting on the return side of the fuel sending unit on a 2014 f350, I'm doing a 6.7 fuel pump swap on my 6.0 and I'm having a hard time figuring out what size is that fitting, I know the feed side is 1/2" but the return is slightly smaller, I tried a 3/8 fitting but it was too small.

 

 

Are you able to confirm if this quick connect for the return side was a 12mm or a 1/2 inch?