Buy 2005 Audi A8 4.2L V8 A/T Quattro L Sedan Engine Coolant Overflow Hose. 4.2 LITER, 2004-06. Back, Bottle, Breather - OEM Audi Part # 4E0121164D (4E0-121-164-D)

Breather tube. Engine Coolant Overflow Hose.
A Coolant Hose that feeds Coolant back to the Overflow or recOvery bottle in a closed loop Cooling system.

Engine Coolant Overflow Hose

Fits A8

4.2 LITER, 2004-06.