Buy 2001 Audi A8 4.2L V8 A/T Quattro Engine Coolant Overflow Hose. 4.2 LITER, 2000-03. Radiator and Back, Bottle, Breather - OEM Audi Part # 4D0121439B (4D0-121-439-B)

Breather tube. Engine Coolant Overflow Hose. VentHose.
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, S8

4.2 LITER, 2000-03.