2pcs for Mercury Monterey 4.2L Upstream Downstream 02 O2 Oxygen Sensor 2004-2007

2pcs Fits 2004-2007 Ford Freestar 4.2L O2 02 Oxygen Sensor Upstream & Downstream

2pcs Upstream Downstream O2 02 Oxygen Sensor for 2004-2007 Ford Freestar 3.9L

For 04-07 Mercury Monterey 4.2L Upstream and Downstream O2 02 Oxygen Sensor 2pcs

2pcs Upstream & Downstream for 04-2007 Ford Freestar 3.9L 4.2L O2 Oxygen Sensor

Oxygen 02 O2 Sensor For 2004-2007 Mercury Monterey 4.2L Upstream & Downstream X2

02 Oxygen O2 Sensor for 04-2007 Mercury Monterey 4.2L Upstream+Downstream 2pcs