This is for Brand New O2 Sensors than will fit the following Infiniti and Nissan's Years and Models:

2007-2012 Nissan Titan 5.6L
2008-2012 Nissan Pathfinder 5.6L
2007-2012 Nissan Armada 5.6L
2007-2010 Infiniti QX56 5.6L

Kit Includes:

2x Part# 350-64072 250-54037 8826-3326 Front Pre Cat O2 Sensors
2x Part# 350-34198 250-24453 8826-3324 Rear Post Cat O2 Sensors