Buy Audi A5 Intercooler Pipe (Front, Rear, Upper). Rear. RS6 Avant; Inlet; Right. Turbocharger Right, Acceleration - OEM Audi Part # 4K0145708A (4K0-145-708-A)

Hose. Pipe.
A Pipe that transfers compressed air to from the turbo or super charger to the intercooler.

Turbocharger Intercooler Pipe

Fits RS6, RS7

Rear. RS6 Avant; Inlet; Right.
Turbocharger Intercooler Tube - Repair or Replace
If your Audi A5 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.