Fits 2002 Chevrolet Impala 3.8L 2 Pcs Upstream & Downstream Oxygen O2 02 Sensors

2pcs Oxygen Sensor O2 for 2004-2005 Chevrolet Trailblazer 4.2L Downstream

For 2001-2004 Chevy Impala 3.4L 2 Pcs Upstream + Downstream Oxygen O2 02 Sensors

Fits 2004-2005 Chevy Impala 3.8L 2 x Upstream + Downstream Oxygen O2 02 Sensors

Fits 2001-2004 Chevy Tracker 2.5L 2 x Upstream & Downstream Oxygen O2 02 Sensor

2pcs Oxygen Sensor O2 for 2004-2005 Chevrolet Trailblazer 4.2L Downstream

Fits 2005 Chevrolet Impala 3.4L 2 Pcs Upstream & Downstream Oxygen O2 02 Sensor

O2 Oxygen Sensor Driver or Passenger Side Downstream & Upstream for Chevy Olds