Buy 2015 Audi S8 4.0L V8 A/T Base Sedan Intercooler Pipe (Front, Rear, Upper). 4.0 LITER, PIPES & - OEM Audi Part # 4H0129615E (4H0-129-615-E)

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

Turbocharger Intercooler Pipe

Fits S7 Sportback, S8

4.0 LITER, PIPES & COMPONENTS, W/S8, S8 PLUS.
Turbocharger Intercooler Tube - Repair or Replace
If your 2015 Audi S8 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.