Buy 2009 Audi S4 By - Passenger hose. Engine Coolant Overflow Hose. 4.2 LITER, RETURN. 4.2 LITER Antifreeze, Back, Bottle - OEM Audi Part # 8E0819378 (8E0-819-378)

A Coolant hose that feeds Coolant back to the Overflow or recOvery bottle in a closed loop Cooling system. Hoses carries permanent Coolant, or antifreeze, throughout the Engine, heater, and radiator.

Engine Coolant HoseEngine Coolant Overflow Hose

Fits RS4, S4

4.2 LITER, RETURN. 4.2 LITER, RETURN, #2. 4.2 LITER, RETURN, A4/S4.