2009 Infiniti G37 Base Before Catalytic Converter, Driver Or Passenger Si Oxygen Sensor, VQ37VHR Engine, FI, Naturally Aspirated, GAS, Sold Individually, 4-Wire, 6 Cyl 3.7L
2013 Infiniti G37 X After Catalytic Converter, Driver And Passenger Si Oxygen Sensor, Engine Designation: VQ37VHR, FI, Naturally Aspirated, GAS, Set Of 2, 4-Wire, 6 Cyl 3.7L