BMW 740 Oxygen Sensor Replace/Remove

Hello. I Am Suppose To Buy A Car With 2 Bad 02 Sensors. I Want To Know Of That Is Bad Or Do I Need To Do Major Work. Will The Car Run And...

Bmw, 740il, 1996, 104,000 Miles, 4.4 L I Changed All 4 Oxygen Sensors Due To Mileage No Dtc Prior To New O2 Sensors. Purchased Sng...