The oxygen sensor installs in the downstream position on 2001-2006 Honda Insight and 2002-2004 Honda CR-V. It signals whether the exhaust is running rich or lean so the engine computer can trim fuel delivery. A built-in heater brings the element to operating temperature quickly after a cold start.

Walker Products 350-34088 Oxygen Sensor Features:

• Fits 2001-2006 Honda Insight; 2002-2004 Honda CR-V
• Engine coverage includes 1.0L I3, 2.4L I4 applications
• Sensor locations by application: B1S2, B1S3 (bank and sensor number)
• 4-wire narrow-band oxygen sensor
• Built-in heater for fast warm-up
• M18x1.5 threaded mounting with a 22 mm hex, 280 mm (11 in.) overall length
• Female square connector at the harness end
• Platinum electrode layer with a protective coating against combustion residue