These are OEM Subaru expansion tank coolant lines for the GD WRX/STI.

13182: Runs from the coolant expansion tank to the metal pipe that runs along the back of radiator to the coolant overflow.

13182A: Runs from the radiator to the coolant expansion tank

See the diagram for a visual look at where these go.

Both lines come with clamps.

Fits all 2002-2007 Subaru WRX and STI.