Search the Community

Hi all, Does anyone know what the thread and pitch size is for the Heater hose (return I think?) fitting/attachment that threads into the block. I assume all RBs have the same thread on these? I've uploaded a pic of it (block is upside down). It sits on the intake side near the top rear of the block. I'm doing up a RB30/25. As we all know, you have to swap out the RB30 one and put the 25 one in there because the 25 has only 1 barbed outlet for the heater hose. I had to grind the old one out of the RB30 with a dremel because it was rusted on there so badly, and thinking the RB25 one will be the same, I just want to get a brand new one. If anyone could tell me the thread and pitch size of this fitting (or even better, the Nissan part number!) that would be much appreciated for me and everyone els looking for this in the future, because I've tried googling, and googling and nothing. Thanks!