Specification: *1 Year Warranty *Brand New O2 02 Oxygen Sensor *Direct Plug-In Replacement *Built and tested to strict quality control standards *100% test before shipment *The key parts including chip from top supplier Fitment: 2011-2012 Nissan Frontier 4.0L 2011-2012 Nissan Pathfinder 4.0L 2011-2012 Nissan Xterra 4.0L 2011-2012 Suzuki Equator 4.0L Notes: Please check fitment notes & description for accurate information. What is an O2 02 Oxygen Sensor's main function? .