7.3 idi coolant filter install
 

Quick question. do i just plumb my coolant filter into the hose that comes from the heater core . To the water pump or does it go to the hose that goes to the side of the block.

Usually onto the line that goes from the heater core

I know that.but which one. The one that goes to the water pump? Or the one that goes from heater core to the block.

Heater to block

Ok and that's the return side right

Correct