Audi A4 1997 2.8L 2771CC V6 GAS SOHC Naturally Aspirated. Audi A4 1997-2001 2.8L 2771CC V6 GAS DOHC Naturally Aspirated. Audi A4 Quattro 1998-2001 2.8L 2771CC V6 GAS DOHC Naturally Aspirated. Bosch Oxygen Sensor 13524 for Audi A4 A4 Quattro 1996-1997.
