4pcs Oxygen O2 02 Sensor for 2007-2008 Mercury Mariner 3.0L Upstream Downstream

For 2007-2008 Mercury Mariner 3.0L O2 02 Oxygen Sensor Heated 4pcs Upsteam Lower

?4pcs Oxygen O2 02 Sensor for 2007-2008 Mercury Mariner 3.0L Upstream Downstream

For 1996-1999 Ford Taurus 3.0L 3.4L 4pcs Upsteam Downstream Oxygen O2 02 Sensor

Upsteam Downstream For 2008 Mazda Tribute 3.0L 4pcs Oxygen O2 02 Sensor

4pcs For 1995-2003 Ford Windstar 3.8L Heated Upsteam Under Oxygen O2 02 Sensor

For 2004-2008 Ford F-150 5.4L O2 02 Oxygen Sensor Heated 4pcs Upsteam Downstream