Thread: Which is the hose the goes to heater core?

Originally Posted by DesertFox

Wow this is confusing me even more, cause the one that is lower flows over the top of the top one. Tensioner pulley?

The tensioner assembly is what the heater core hoses attach to on the engine. The lower as it goes into the engine is the one that is fed by the water pump. The other is the return as it goes back into the lower intake manifold.