Charge Air Cooler Pipe. InterCooler Pipe.
A Pipe that transfers compressed Air to from the turbo or super Charger to the InterCooler.

Turbocharger Intercooler Pipe

Fits Jetta

1.9 LITER.
Turbocharger Intercooler Tube - Repair or Replace
If your 2006 Volkswagen Jetta 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.