Fine Filter Exit Fitting Size

The inlet threads are 14mm-1.5, and the outlet threads are 12mm-1.5.  These are not tapered threads, both ends use copper sealing washers between the filter and fitting.  

The RV-12iS uses a 12mm X1.5 double banjo bolt.

Jeff,  Thank you for your quick response and input.  Eric

Thanks Jon - Very helpful!