I took the throttle body off the engine to clean out the carbon buildup and the coolant line from the throttle body snapped off the plastic tee that has three coolant lines and one line that looks like a vacuum line. Help out a newbie and tell me what this plastic part is called. I can't get a new one until I know what it is. Thanks.

 

The heater valve? When you flip the "Cool/Heat" switch in the dash it pulls vacuum to that valve and directs coolant to the heater core.

 

thanks for the help, I found one at Advance Auto Parts and at Autozone. All the hoses are brittle so I guess I might as well change them all while i'm in there.