Set of 2 Oxygen O2 Sensor Upstream & Downstream For 2001-2005 Honda Civic 1.7L

1999-2000 Civic 1.6L. 2001-2005 Civic 1.7L. Locate the old oxygen sensor and carefully remove it using the appropriate tools. Install the new oxygen sensor by hand-tightening it into place and then using a wrench for secure fitting.