A Pipe that transfers Compressed Air to from the turbo or Super Charger to the Intercooler.

PIPE-PCV PCV Valve HoseIntercooler Pipe

Fits STI, WRX

Turbocharger Intercooler Tube
If your Subaru Crosstrek is equipped with a turbo and you've noticed a reduction in acceleration or a hissing on acceleration accompanying your check engine light, your intercooler or its piping/tubes may need to be repaired or replaced.