Recently bought a 97 4WD with 140k on it definitely worth putting a little money in but anyway. I was replacing the rotors and wheel hub assembly and in the process the front driver side line broke off. Went and got a new one and in the process broke the small line to the right that screws into the aluminum block. Can anyone tell me what that line is where it runs to and what its for? Can't find a proper diagram and parts store is no help. TIA

 

Can you take a picture and post it?