Coolant is drawn into the inlet of the front cover and then flows from the…
Power Stroke 6.0L – Cooling System Flow: Back of Front Cover
Coolant is sealed via a silicon in metal one piece gasket and is directed out of the front cover through three (3) passages.
Two of the passages route coolant to the crankcase to cool the cylinder walls and cylinder heads.
The third passage routes coolant to the oil cooler via a passage in the crankcase.
There are two passages for coolant to return from the crankcase into the front cover.